chapter 1

1. Terminal emulation software, such as HyperTerminal, can be used to configure a router. Which of the following HyperTerminal options shown in the graphic are correctly set to allow configuration of a Cisco router? (Choose three.)

a. bits per second#b. data bits#c. parity#d. stop bits#e. flow control

2. Which of the following describes the function of a WAN?

a. connects peripherals in a single locationb. connects multiple networks in a single buildingc. provides connectivity on a LAN#d. provides connectivity over a large geographic area

3. A router is composed of many internal components. Which of the following components stores a copy of the router's configuration file?

a. metal-oxide memoryb. read only memoryc. flash memory#d. non-volatile random access memory

4. Which of the following layers of the OSI model are incorporated in WAN standards? (Choose two.) #a. physical layerb. application layerc. transport layer#d. data link layere. session layer

5. Which of the following devices are used in the construction of a WAN? (Choose three.) a. hubs#b. routers#c. communication serversd. transceivers#e. modemsf. multi-port repeaters

6. Select the statements that correctly describe flash memory in a 2600 series router? (Choose two.) a. holds the startup configuration by default#b. can be upgraded with single in-line memory modules#c. stores Cisco IOS software imagesd. stores routing table information by defaulte. maintains the only copy of an IOS image after the router is booted

7. Which of the following tasks can be accomplished through a management connection on a router? (Choose three.) *a. troubleshooting problems*b. monitoring the systemc. capturing LAN data packets*d. configuring the routere. routing data packets

8. Which of the following descriptions are true regarding the management connections on a Cisco router? (Choose three.) #a. They are non-network connections.b. They are used to connect the router to the rest of the production network.c. They are synchronous serial ports.#d. They are used for initial router configuration.#e. They are asynchronous serial ports.f. They are accessed using their assigned IP address.

9. Why is a console connection to a router or switch preferred when troubleshooting? (Choose two.) a. can be accessed remotely#b. does not depend on network services#c. displays startup and error messages by defaultd. does not require special components

10. Which of the following are functions of RAM? (Choose three.) a. contains startup configuration file#b. stores routing table#c. holds fast switching cached. retains contents when power is removed#e. stores running configuration file

11. Which of the following are functions of NVRAM? (Choose two.) a. stores the routing table#b. retains contents when power is removed#c. stores the startup configuration filed. contains the running configuration filee. stores the ARP table

12. During the initial configuration of a 2600 series Cisco router, which cable is required for connecting a PC to the console port?

a. twistedb. crossover#c. rolloverd. straight

13. The console port can be used for which of the following? (Choose three.) #a. debugging#b. password recoveryc. routing data between networks#d. troubleshootinge. connecting one router to another

14. Several Ethernet hosts on a LAN need the gateway services of a Cisco 2500 series router. Which of the following would be needed to physically connect a router to all of the hosts on the LAN? (Choose two.) a. a crossover cable between the transceiver on a router and a switchb. crossover cables between a switch and hosts on a LAN c. a straight-through cable between the auxiliary port on a router and a switchd. a rollover cable between the console port on a router and a switch#e. straight-through cables between a switch and hosts on a LAN#f. a straight-through cable between the transceiver on a router and a switch

15. What contains the instructions that a router uses to control the flow of traffic through its interfaces? a. packet configuration#b. configuration filesc. flash memoryd. internal components

16. Which basic components do a router and a standard desktop PC have in common? (Choose three.) #a. CPUb. hard drive#c. input/output interfacesd. keyboarde. monitor#f. system bus

17. Which router component holds the configuration file when power is lost? a. volatile random access memoryb. read only memoryc. non-volatile random access memory#d. flash memory

18. Which of the following are true regarding router interfaces? (Choose three.) a. provide temporary memory for the router configuration files#b. connect the router to the network for packet entry and exit#c. can be on the motherboard or a separate moduled. hold the IOS image#e. connect the router to LANs and WANs

19. What do routers use to select the best path for outgoing data packets? a. ARP tablesb. bridging tables#c. routing tablesd. switching tables

20. An internetwork must include which of the following? (Choose three.) #a. switchingb. static addressingc. IETF standardization#d. dynamic or static routing#e. consistent end-to-end addressing

21. ABC Company just purchased three new routers to start their company network. Which items are needed to establish a terminal session between a PC and the router for the initial configuration? (Choose three.) a. straight-through cable#b. terminal emulation software#c. rollover cable#d. RJ-45 to DB-9 connectore. V.35 cable

chapter 2

1. Which of the following is the correct flow of routines for a router startup? # a. load bootstrap, load IOS, apply configuration b. load bootstrap, apply configuration, load IOS c. load IOS, load bootstrap, apply configuration, check hardware d. check hardware, apply configuration, load bootstrap, load IOS

2. Under what conditions does the router enter setup mode? (Choose three.) ? a. immediately after issuing the command Router#erase start? b. after issuing the command Router#setup? c. during the initial configuration of a router d. after deleting the backup configuration and reloading the router e. after deleting the running configuration

3. Which of the following identifies the correct items needed to initially configure a router? a. 1) DB-9-to-RJ-45 on the PC's serial port 2) a straight through cable 3) the router's console port b. 1) PC's Ethernet port 2) a crossover cable 3) the router's Ethernet port c. 1) DB-9-to-RJ-45 on the PC's serial port 2) a rollover cable 3) the router's Ethernet port d. 1) PC's Ethernet port 2) a rollover cable 3) the router's console port # e. 1) DB-9-to-RJ-45 on the PC's serial port 2) a rollover cable 3) the router's console port f. 1) PC's Ethernet port 2) a rollover cable 3) the router's Ethernet port

4. What is the default sequence for loading the configuration file? a. NVRAM, FLASH, ROM b. FLASH, TFTP,CONSOLE# c. NVRAM, TFTP, CONSOLE d. FLASH, TFTP, ROM

5. What does the command sh? return as output if issued at the Router# prompt? a. all show commands allowed in privileged mode# b. all commands beginning with the letters sh c. an incomplete command error message d. an invalid command error message

6. Which keystroke is used to move to the beginning of a command line? # a. Ctrl-A b. Ctrl-B c. Esc-A d. Esc-B e. Ctrl-C f. Ctrl-Z

7. A network administrator needs to configure a router. Which of the following connection methods requires network functionality to be accessible? a. console b. AUX? c. Telnet d. modem

8. Which keystrokes can be used to return to the privileged mode from the interface configuration mode? a. Ctrl-P b. Ctrl-Shift-6, then X# c. Ctrl-Z d. Esc

9. Cisco IOS software is separated into two levels as a security feature. What are those two levels? (Choose two.) a. global# b. privileged c. local# d. user e. interface

10. Which connection method can be used to perform the initial configuration of a router? # a. use a serial connection of a computer connected to the console port of a router b. telnet to the router through a serial port c. use a vty port through the Ethernet interface d. use a modem connected to the AUX port of the router

11. Which of the following statements concerning router interface modes are correct? (Choose three.) a. User EXEC mode provides commands to monitor router operation. b. Privileged EXEC mode only provides commands to change or configure router operation. c. Password protected configuration modes can be accessed from either user EXEC or privileged EXEC modes.# d. On a router with the name Core1, the prompt indicating privileged EXEC mode is Core1#.# e. The command to enter privileged EXEC mode is Router# enable.? f. A username and password may be required to enter privileged EXEC mode.

12. What information does the name of the IOS file provide to the network administrator? (Choose three.) a. the amount of NVRAM required to run the image# b. the hardware platform the image runs on c. the various software platforms the image can run on# d. special features and capabilities of the image e. the bandwidth supported by the IOS# f. where the image executes from and if it has been compressed

13. What baud rate needs to be configured on terminal emulation software to allow a connection to the console port of a router? a. 2400 b. 4800# c. 9600 d. 14200 e. 38400

14. Which tasks can be accomplished by using the command history feature? (Choose two.) a. View a list of commands entered in a previous session. b. Recall up to 15 command lines by default.# c. Set the command history buffer size.# d. Recall previously entered commands. e. Save command lines in a log file for future reference.

15. When the router output is being viewed through a terminal program, which statements are true regarding the --More-- prompt at the bottom of the router display? (Choose two.) a. Press the Spacebar to display the next line.# b. Press the Spacebar to view the next screen. c. Press the PgDn key to view the next screen.# d. Press the Enter key to display the next line. e. Press the Enter key to view the next screen.

16. Which command takes precedence if the commands enable password and enable secret are both configured on a router? # a. enable password b. enable secret c. Neither. They are both enabled. d. Neither. They cancel each other out.

17. What information about the router and its startup process can be gathered from the output of the show version command? (Choose three.) a. the last restart method b. the command buffer contents# c. the amount of NVRAM and FLASH used# d. the configuration register settings# e. the location from where the IOS loaded

18. After the active IOS image has been loaded into RAM from flash memory, which commands could be used be used to display the file name of the active IOS? (Choose two.) a. Router# show IOS# b. Router# show flash c. Router# show nvram# d. Router# show version e. Router# show startup-config f. Router# show running-config

19. Which tasks can be performed in the ROM monitor mode? (Choose two.) # a. recover from system failures b. create startup configuration files# c. recover from lost passwords d. configure IP addresses on all router interfaces e. perform high level diagnostics

chapter 3

1. Why is it important to create standards for network consistency? (Choose three.) # a. reduces network complexity b. increases unplanned downtime# c. limits unplanned downtime d. increases bandwidth by regulating networking performance# e. limits events that may impact network performance

2. Select the recommended locations to save a running-config file. (Choose three.) a. all network hosts# b. network server# c. floppy disk# d. TFTP server e. server that is not on the network

3. Router names are associated with IP addresses. What is the name of the table that is created by this association? a. IP table b. SAP table c. ARP table

d. MAC table? e. HOST table f. RARP table

4. Which commands display information about the IOS or configuration files stored in router memory? (Choose three.) a. Router# show ram# b. Router# show flash c. Router# show hosts d. Router# show history# e. Router# show version# f. Router# show startup-config 5. The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.) a. Sydney(config-if)# ip address 201.100.53.2 255.255.255.0 b. Sydney(config-if)# no shutdown c. Sydney(config-if)# ip address 201.100.53.1 255.255.255.224 d. Sydney(config-if)# clock rate 56000 e. Sydney(config-if)# ip host Melbourne 201.100.53.2

6. What are the default settings for a serial interface? (Choose three.) # a. DTE b. DCE# c. shutdown# d. no IP address e. clock rate 56000 f. encapsulation ARPA

7. A network administrator wants to assure that any password that permits access to the privileged EXEC mode is not shown in plain text in the configuration files. Which commands will accomplish this task? (Choose two.) a. Router(config)#enable cisco secret b. Router(config)#enable cisco# c. Router(config)#service password-encryption d. Router(config)#enable secret cisco e. Router(config)#encrypt-all cisco f. Router(config)#service encryption-password

8. What will be the response from the router after the command, "router(config)# hostname portsmouth" is entered? a. portsmouth## b. portsmouth(config)# c. invalid input detected d. router(config-host)# e. hostname = portsmouth portsmouth# f. ? command not recognized router(config)#

9. Select the correct sequence of commands that will configure "Engineering LAN" as the interface description on the Ethernet0 interface. a. Router# configure terminal Router(config)# interface e0 description Engineering LAN # b. Router# configure terminal Router(config)# interface e0 Router(config-if)# description Engineering LAN c. Router# configure terminal Router(config)# interface e0 Router(config-if)# interface description Engineering LAN d. Router# configure terminal Router(config)# description Engineering LAN

10. Select the commands that will store the current configuration file to a network TFTP server? (Choose two.) # a. Router# copy run tftp b. Router# copy tftp run# c. Router# copy running-config tftp d. Router# copy tftp running-config e. Router(config)# copy running-config tftp f. Router(config)# copy tftp running-config

11. Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.) # a. VTY interface# b. console interface c. Ethernet interface d. secret EXEC mode# e. privileged EXEC mode f. router configuration mode

12. What is the default state of the interfaces on a router? a. up, line protocol down# b. down, line protocol down c. adminstratively down, line protocol down d. up, line protocol up

13. Which command turns on a router interface? a. Router(config-if)# enable b. Router(config-if)# no down c. Router(config-if)# s0 active d. Router(config-if)# interface up# e. Router(config-if)# no shutdown

14. A telnet session can be established when using the IP address of a router but not the name of the router. Which of the following is the most likely cause of the problem? a. an incorrect host table entry b. an incorrect ARP table entry c. an incorrect routing table entry d. an incorrect protocol configured e. an incorrect subnet mask

15. Select the interface descriptions that provide the most appropriate information. (Choose two.) # a. circuit number b. host IP address c. telnet password d. number of hops between routers# e. purpose and location of the interface

16. Select the commands necessary to remove any existing configuration on a router. (Choose two.) a. delete flash# b. erase startup-config# c. erase running-config d. restart e. reload f. delete NVRAM

17. An IP network is to be added to a router Ethernet interface. What steps must be performed to configure this interface to allow connectivity to the hosts on this LAN? (Choose two.) # a. Enter the command no shutdown. b. A password must be set on the interface. c. The interface DCE clock rate must be set. d. The interface must be configured for virtual terminal access.# e. The interface must be configured with an IP address and subnet mask. f. The router must be put in setup mode in order for the interface to be configured.

18. Which command sequence will permit access to all five router virtual terminal lines with a password of cisco?

a. Router(config-line)#config telnet Router(config-line)# line vty 0 5 Router(config-line)# password cisco

b. Router(config)# line vty 0 4 Router(config)# password cisco

# c. Router(config)# line vty 0 4 Router(config-line)# password cisco Router(config-line)# login

d. Router(config-line)# config telnet Router(config-line)# password cisco Router(config-line)# sessions 0 4

19. Which statements are true regarding the recommended use of login banners? (Choose two.) a. They should be used to display information regarding system changes or maintenance.# b. They should be used to display warnings to unauthorized users.# c. They should be used to display welcome messages prior to login. d. They should be seen only by system administrators. e. They should provide confirmation of incoming IP addresses.

20. Which are valid router prompts? (Choose three.) a. Router(privileged)## b. Router(config)# c. Router(command)## d. Router(config-router)## e. Router(config-if)# f. Router(exec)#

21. What is the effect of the command ip host HQ 192.1.1.1? # a. permits a ping to 192.1.1.1 with the command ping HQ b. assigns the description HQ to the interface with the ip address 192.1.1.1 c. renames the router as HQ d. defines a static route to the host 192.1.1.1 e. configures the remote device HQ with the ip address of 192.1.1.1

22. What must be configured to establish a serial link between two routers that are directly connected? a. a clock rate on the DTE interface b. a no clock rate command on the DTE interface c. no configuration is required

# d. a clock rate on the DCE interface

chapter 4

1. To obtain CDP information from a Cisco router that is not directly connected to the administrator's console, what must happen? a. The source router must send TLV blocks to the remote router.# b. The administrator can Telnet to a Cisco device that is connected to the remote router. c. The administrator needs to issue the Router# show cdp all to view the entire network CDP advertisements. d. The administrator must transmit TTL packets to the remote device and wait for a response.

2. Which of the following are displayed by the Router# show cdp neighbors command? (Choose three.) a. load# b. platform c. reliability# d. holdtime# e. local interface

3. What command enables CDP on the interface of a router? # a. Router(config-if)# cdp enable b. Router(config-if)# cdp run c. Router(config-if)# cdp start d. Router(config-if)# cdp config

4. An administrator is attempting to enable CDP on the interface of a Cisco router. After issuing the command Router(config-if)# cdp enable, the router responds with an error stating that CDP is not active. What might be the problem? a. The cdp enable command must be issued from the global mode prompt. # b. The administrator needed to issue the command Router(config-if)# cdp run. c. CDP has not been configured globally. d. The administrator did not manually enter the CDP neighbors into the CDP table. 5. Which of the following is true regarding CDP and the graphic shown? a. CDP running on Router D will gather information about routers A, B, C, and E. # b. By default, Router A will receive CDP advertisements from routers B and C. c. If routers D and E are running different routing protocols, they will not exchange CDP information. d. Router E can use CDP to identify the IOS running on Router B.

6. Transmitting type length values (TLVs) inside advertisements is a process used by CDP to provide information about neighboring devices. What information is displayed by these TLVs? (Choose three.) # a. interface information of the connected device b. all networks connected to the neighboring device# c. name of the connected device d. routing protocol used on the neighboring device# e. holdtime for advertisements

7. For which of the following network layer protocols does CDP provide information? (Choose three.) # a. IP b. RIP c. SNMP# d. AppleTalk# e. IPX f. IGRP

8. Which command will produce the output shown in the graphic? a. show cdp b. show cdp neighbors # c. show cdp neighbors detail d. show cdp detail e. show cdp traffic

9. What is the purpose of the cdp timer command? # a. specifies the hold time to be sent in the CDP update packet b. resets the traffic counters back to zero c. specifies how often the Cisco IOS software sends CDP updates d. deletes and resets the CDP table of information about neighbors

10. What is the main use of Telnet? a. transfer of data between end users b. verification of simple connectivity c. routing of data packets # d. remote connection to network devices 10. Pings between Atlanta and Dallas are successful. If a hostname table or DNS connection is not available, which command will successfully establish a remote connection from Atlanta to Dallas via Telnet? a. Atlanta> connect Dallas b. Atlanta> 197.72.3.2

c. Atlanta# 206.157.85.1 # d. Atlanta# telnet Dallas

11. Why would an administrator use the Telnet application when troubleshooting a network? (Choose three.) # a. It can be used to verify the operation of application layer software between the source and destination. b. Telnet can use the ICMP protocol to verify a hardware connection and network layer address. c. It is the most complete testing mechanism available. d. Remote networks may be accessed via a Telnet session for troubleshooting. e. Time to Live values are used by Telnet to identify a failure of device between source and destination

12. If the network administrator establishes a telnet session from Workstation 2 to GAD and then from GAD to BHM, what occurs if the session with BHM is suspended and the Enter key is pressed? a. The GAD session will be resumed. b. The BHM session will be resumed. c. The GAD session will be terminated. d. The BHM session will be terminated. 13. The traceroute command was used to trace the path between routers A and D. What would an output display of three asterisks (***) indicate? a. The command was issued from the wrong prompt. b. Each datagram was successfully sent. c. One of the routers is unreachable. d. There are three hops between source and destination.

14. A network administrator was called away from the terminal while using Telnet to monitor a remote router. The Telnet session was left connected. If the default Telnet configuration is used, what will the administrator find upon returning 15 minutes later? a. The Telnet session entered a "sleep" state and will resume when the spacebar is pressed. b. The Telnet session remained connected and is on the same screen it was left on. c. The Telnet session suspended itself and will resume when the Enter key is pressed. d. The Telnet session terminated itself after 10 minutes of inactivity. e. The Telnet session remained active but now requires the password to be entered again.

15. What key sequence is used to suspend a Telnet session on a remote router? a. Ctrl-Shift-S b. Ctrl-Shift-6 # c. Ctrl-Shift-6, then x d. Ctrl-Alt-S e. Ctrl-Alt-6 f. Ctrl-Alt-6, then x

16. How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS? a. 4 b. 5 c. 8 d. 10

17. How can a network administrator logged in to RTA gather information about the Cisco devices that are directly connected to its neighbor, RTB? # a. Use the show cdp neighbors detail command on RTA to view information about every device on the entire internetwork. b. Use ping to determine the status of RTB, then issue the show cdp neighbors detail command. c. Use Telnet to connect to RTB, then issue the show cdp neighbors command. d. Use traceroute to establish the pathway to RTB, then issue the show cdp neighbors command.

Chapter 5

1. The commands shown in the graphic were entered to alter the startup sequence of the router. On the next reload, which IOS will be loaded? a. The router will load c2500-js-l.112-26d. b. The router will load c2500-d-l.120-9. c. The router will load the IOS from ROM. d. The router will boot into ROM monitor mode.

2. Routers have different types of memory. Choose the answer that describes flash memory. a. provides working storage b. stores a fully functional IOS image c. stores the startup configuration file d. initializes the code used to boot the router

3. Routers have different types of memory. Choose the answer that describes NVRAM. a. provides working storage b. stores a fully functional IOS image c. stores the startup configuration file d. initializes the code that is used to boot the router

4. Which command will backup configuration files from RAM to NVRAM or a TFTP server? a. backup b. copy c. telnet d. move

5. Which command will copy an IOS image from a TFTP server to a router? a. Router# copy tftp flash b. Router# copy flash tftp c. Router(config)# copy tftp flash d. Router(config)# copy flash tftp

6. Which of the following can be configured as a source for the IOS image by using the boot system command? (Choose two.) a. TFTP server b. HTTP server c. Telnet server d. Flash memory e. NVRAM memory

7. Which part of the configuration register indicates the location of the IOS? a. the bootstrap b. the boot field c. the IOS locator d. the system image loader

8. Which command is used to change the order in which the router looks for system bootstrap information? a. config-image b. config-system c. config-register d. config-bootfield e. config system bootstrap

9. Which two items below are required by routers in order for them to perform their basic operations? (Choose two.) a. a tftp server b. a configuration file c. a configuration register file d. an operating system file e. a DNS table

10. An IOS image can be copied into flash from a TFTP server. Which of the following statements are true regarding this process? (Choose three.) a. A series of "!'s" are displayed as the image is downloaded successfully to flash. b. The copy tftp flash:filename ip address command is used to copy the IOS from the server to flash. c. After the new flash image is downloaded, it is verified. d. A series of "e's" are displayed as the current IOS image is erased from flash. e. Flash must be cleared with the erase command prior to beginning the download process.11. What command can be used in ROM monitor mode to run the IOS image in flash? a. rommon1> config-register 0x2102 b. rommon1> boot flash:filename c. rommon1> xmodem:filename d. rommon1> boot system flash:filename e. rommon1> reload system flash:

12. The Cisco IOS image naming convention allows identification of different versions and capabilities of the IOS. What information can be gained from the filename c2600-d-mz.121-4? (Choose two.) a. The "mz" in the filename represents the special capabilities and features of the IOS. b. The file is uncompressed and requires 2.6 MB of RAM to run. c. The software is version 12.1, 4th revision. d. The file is downloadable and 121.4MB in size. e. The IOS is for the Cisco 2600 series hardware platform.

13. Where does a router look for boot system statements? a. ROM b. RAM c. NVRAM d. Flash

14. What does a configuration register setting of 0x2102 indicate on a router? a. It tells the router to locate and load the IOS from NVRAM. b. It tells the router to locate and load the IOS from FLASH. c. It tells the router to bypass the configuration in NVRAM. d. It tells the router to look in the startup configuration for boot system commands.

15. If a router cannot find a valid configuration file during the startup sequence, what will occur? a. The startup sequence will reset.

b. The router will prompt the user for a response to enter setup mode. c. The startup sequence will halt until a valid configuration file is acquired. d. The router will generate a default configuration file based on the last valid configuration. e. The router will monitor local traffic to determine routing protocol configuration requirements.

16. If the configuration register instructs a router to look for configuration information in NVRAM and no boot system commands exist there, from where will the router next attempt to boot the IOS? a. RAMR b. ROM c. FLASH d. EPROM e. ROMMON

17. If boot system commands have been configured, which of the following could happen if a router fails to obtain an IOS image from the primary sources during bootup? a. The router will load a subset of a full IOS version from system ROM. b. The router will attempt to reboot two times before failing. c. The router will load the last good IOS image from NVRAM. d. The administrator will be prompted to load a valid IOS image.

18. The router has been configured with a valid configuration file. Which of the following could be a cause for a router not booting normally? (Choose two.) a. The flash image is corrupt. b. A console cable is disconnected. c. The flash image is located in NVRAM. d. The startup configuration file is incomplete. e. The router encountered a hardware error.

19. Which of the following are steps in saving a router configuration file to a TFTP server? (Choose three.) a. Enter configuration mode. b. Enter the IP address to the TFTP server. c. Use the copy running-config tftp command. d. Use the copy tftp running-config command. e. Name the configuration file or accept the default name.

chapter 6

1. Given the following commands:

Router(config)# router ripRouter(config-router)# network 192.5.5.0

What can be concluded about the routing processes used on the router? (Choose three.) A link state routing protocol was used. * A distance vector routing protocol was used. * Routing updates will broadcast every 30 seconds. Routing updates will broadcast every 90 seconds. * Hop count is the only metric used for route selection. Bandwidth, load, delay, and reliability are used as metrics for route selection.

2. Given the following commands:

Router(config)# router igrp 300Router(config-router)# network 192.5.5.0

What can be concluded about the routing process on this router? (Choose three.) * A distance vector routing protocol was used. A link state routing protocol was used. Routing updates will broadcast every 30 seconds. * Routing updates will broadcast every 90 seconds. Hop count is the metric used for route selection. * Bandwidth, load, delay and reliability are the metrics used for route selection.

3. The routers shown in the graphic receive routing updates every 30 seconds by default. Select the commands that were configured on Router2 to achieve this update interval. (Choose two.) * Router2(config)# router rip Router2(config)# router igrp 200 Router2(config-router)# network 192.5.5.0 201.100.11.0 210.93.105.0 Router2(config-router)# network 192.5.5.0 255.255.255.0Router2(config-router)# network 210.93.105.0 255.255.255.0Router2(config-router)# network 201.100.11.0 255.255.255.0 * Router2(config-router)# network 192.5.5.0Router2(config-router)# network 201.100.11.0Router2(config-router)# network 210.93.105.0

4. What is the purpose of a routing protocol? It is used to build and maintain ARP tables. It provides a method for segmenting and reassembling data packets.

It allows an administrator to devise an addressing scheme for the network. * It allows a router to share information about known networks with other routers. It provides a procedure for encoding and decoding data into bits for packet forwarding.

5. How does a router learn about routes to a network? (Choose three.) * Information is gathered from its own configuration regarding directly connected networks. Switches forward destination address information to each router. Hosts communicate destination network information to each router. * Other routers forward information about known networks. * Routes are entered manually by a network administrator. Routes are learned from information gathered from ARP tables.

6. Why is fast convergence desirable in networks that use dynamic routing protocols? Routers will not allow packets to be forwarded until the network has converged. Hosts are unable to access their gateway until the network has converged. * Routers may make incorrect forwarding decisions until the network has converged. Routers will not allow configuration changes to be made until the network has converged.

7. If dynamic routing is not configured on a router, how do routing table updates occur? Link state advertisements are sent from other routers. * Updates are made to the routing table by the administrator. Best path information is communicated by network hosts. The routing table is updated by neighboring routers.

8. Which of the following conditions must be met in order for a network to have converged? The routers in the network are operating with dynamic routing protocols. The routers in the network are operating with compatible versions of IOS. The routers in the network are operating with the same routing tables. * The routers in the network are operating with consistent routing knowledge.

9. What are some of the advantages of using a link-state routing protocol instead of a distance vector routing protocol? (Choose two.) The topology database eliminates the need for a routing table. Frequent periodic updates are sent to minimize the number of incorrect routes in the topological database. * Routers have direct knowledge of all links in the network and how they are connected. * After the inital LSA flooding, they generally require less bandwidth to communicate changes in a topology. Link-state protocols require less router processor power than distance vector protocols.

10. Assuming that the network shown in the graphic is converged and dynamic routing is enabled, which of the following conditions will cause a modification to the Orlando routing table? (Choose two.) * The device connecting the S0 interface of the Tampa router to the serial link loses power. * A network administrator shuts down the Orlando router E0 interface. A DCHP server connected to the Tampa E1 network loses power. The IP address of a workstation on the Orlando E0 network is reassigned. A host on the Orlando E1 network transmits data to a server on the Tampa E1 network. A Telnet connection to the Orlando router fails.

11. Which two statements describe autonomous systems? (Choose two.) Interior gateway protocols are used between autonomous systems. * Exterior gateway protocols are used between autonomous systems. An autonomous system may be under the control of multiple organizations. * An autonomous system is identified by a 16 bit number assigned by ARIN. The autonomous system is identified in the network portion of the IP address.

12. Select the statements that describe link-state routing processes? (Choose three.) * Each router develops its own map of the entire network. * Routers send triggered updates when changes in the network occur. * Link-state routing protocols place a higher load on router resources during the routing protocol initialization. Link-state protocols are more prone to routing loops than distance vector routing protocols. Networks using link-state routing protocols are slower to reach convergence after changes have occurred than those using distance vector protocols.

13. Which of the following are valid static IP routes? (Choose three.) RouterB(config)# ip route 192.168.5.0 255.255.255.0 S1 * RouterC(config)# ip route 192.168.1.0 255.255.255.0 S1 * RouterA(config)# ip route 192.168.3.0 255.255.255.0 192.168.2.2 RouterB(config)# ip route 192.168.1.0 255.255.255.0 192.168.2.2 * RouterC(config)# ip route 192.168.2.0 255.255.255.0 192.168.4.1 RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.2.1

14. Which of the following statements are true regarding the command ip route 172.16.1.0 255.255.255.0 172.16.2.1? (Choose three.)

* This command is used to set up a static route. This command is used to set up a default route. * This command is entered from global configuration mode. * All packets intended for network 172.16.1.0 will be sent to gateway 172.16.2.1. All packets intended for network 172.16.2.1 will be sent to gateway 172.16.1.0.

15. Which type of address does a router use to make routing decisions? source IP address source MAC address * destination IP address destination MAC address

16. Given the command, RouterC(config)# ip route 197.5.2.0 255.255.255.0 192.10.1.1, what does the address 192.10.1.1 represent? the source host * the next hop router the outbound interface the destination network

17. Why is it necessary to specify a list of networks when configuring an interior routing protocol? to tell the router how to reach those networks * to tell the router which attached networks participate in routing updates to tell the router which set of metrics to use for the attached networks to tell the router which routing protocol to use

18. Referring to the diagram, which commands will enable hosts on the Idaho E0 network to reach hosts on the E0 network of the Montana router? (Choose two.) Montana(config)# ip route 172.31.5.0 255.255.255.0 172.31.5.1 * Montana(config)# ip route 172.31.3.0 255.255.255.0 172.31.4.1 Idaho(config)# ip route 172.31.5.0 255.255.255.0 172.31.4.1 * Idaho(config)# ip route 172.31.5.0 255.255.255.0 172.31.4.2 Idaho(config)# ip route 172.31.5.1 255.255.255.0 172.31.4.1

19. Which protocols use an addressing scheme to direct user traffic? (Choose two.) * IP IGRP EIGRP * IPX OSPF RIP

20. Which category of routing algorithms discovers and maintains a topological map of the entire internetwork? static Bellman-Ford exterior gateway Internetwork Packet Exchange distance vector * link-state

21. All routers at a medium sized company have been upgraded. The administrator of the network has decided that a more advanced routing protocol using a combination of both distance vector and link state features will be implemented. Which protocol should the administrator select for the network? RIP IGRP BGP OSPF * EIGRP

22. Which are the primary functions used by a router when forwarding data?(Choose two.) data encryption error notification * packet switching address identification * path determination packet validation

23. Describe the switching function that occurs in a router. allows the router to make forwarding decisions based on Layer 2 addressing uses network addressing to select the best route and interface to forward data * accepts a packet on one interface and forwards it to a second interface enables the router to select the most appropriate interface for forwarding a packet

24. Which protocol can be used to route traffic between two ISPs? RIP * BGP IGRP OSPF EIGRP

Chapter 7

1. The graphic shows a network that is configured to use RIP routing protocol. Router2 detects that the link to Router1 has gone down. It then advertises the network for this link with a hop count metric of 16. Which routing loop prevention mechanism is in effect? split horizon error condition hold-down timer * route poisoning count to infinity

2. Which of the following methods does split horizon use to reduce incorrect routing information? Routing updates are split in half to reduce the update time. * Information learned from one source is not distributed back to that source. New route information must be learned from multiple sources to be accepted. The time between updates is split in half to speed convergence. New route information is suppressed until the system has converged.

3. When does a distance vector routing protocol set a hold-down timer on a route? when the metric value of the route decreases * when the route is marked as inaccessible when the metric value for the route improves when a regular update is received from a neighboring router

4. Which of the following functions are performed by a router as routing information travels through the network? (Choose two.) advertise supported applications * identify new destinations calculate packet speed verify network scalability * identify invalid networks

5. Which of the following is a correct IGRP configuration for the routers shown in the network diagram? RouterA(config)# router igrpRouterA(config-router)# network 192.168.0.0 RouterB(config)# router igrp 101RouterB(config-router)# network 192.168.0.0 * RouterA(config)# router igrp 45RouterA(config-router)# network 192.168.1.0RouterA(config-router)# network 192.168.2.0 RouterB(config)# router igrp 1RouterB(config-router)# network 192.168.1.0RouterB(config-router)# network 192.168.2.0 RouterA(config)# router igrp 1RouterA(config-router)# network 192.168.2.0RouterA(config-router)# network 192.168.3.0 RouterB(config)# router igrp 45RouterB(config-router)# network 192.168.1.0RouterB(config-router)# network 192.168.2.0

6. What actions will occur after RouterA loses connectivity to network 114.125.16.0? (Choose two.) * RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterA. During the next update interval, RouterB will send a RIP update out both ports that includes the inaccessible network. During the next update interval, RouterC will send an update to RouterB stating that network 114.125.16.0 is accessible in 2 hops. * Router C will learn of the loss of connectivity to network 114.125.16.0 from RouterB. RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterC.

7. The command show ip protocols was just issued and the following line was displayed in the output:

Gateway 192.168.2.1 Distance 100 Last Update 00:00:54

When should the next routing table update be received assuming the configuration uses default values? 6 seconds 24 seconds 30 seconds * 36 seconds 90 seconds

8. Which command set will stop the IGRP routing process? RouterB(config)# router igrp 101RouterB(config-router)#shutdown RouterB(config)# router igrp 101

RouterB(config-router)#network no 192.168.2.0 * RouterB(config)# no router igrp 101 RouterB(config)# router no igrp 101

9. Refer to the graphic. Assuming default settings are configured, which routing protocol has been configured on the router? OSPF RIP * IGRP BGP Static

10. The following line was displayed in the output of the show ip route command:

192.168.3.0/24 [100/80135] via 192.168.2.2, 00:00:30, Serial0/0

What is the administrative distance of the routing protocol enabled? 30 80 * 100 135 80135

11. Which of the following would be the correct command sequence to enable RIP on Router B for all connected networks? RouterB# router ripRouterB(router)# network 210.36.7.0RouterB(router)# network 220.17.29.0RouterB(router)# network 211.168.74.0 RouterB(config)# router ripRouterB(config-router)# network 198.16.4.0RouterB(config-router)# network 211.168.74.0RouterB(config-router)# network 199.84.32.0 RouterB(config)# configure router ripRouterB(config-router)# network 210.36.7.0RouterB(config-router)# network 199.84.32.0RouterB(config-router)# network 211.168.74.0 RouterB(config)# router ripRouterB(config-router)# network 198.16.4.0RouterB(config-router)# network 210.36.7.0RouterB(config-router)# network 211.168.74.0 * RouterB(config)# router ripRouterB(config-router)# network 198.16.4.0RouterB(config-router)# network 210.36.7.0RouterB(config-router)# network 220.17.29.0

12. Which command will display RIP activity as it occurs on a router? * debug ip rip show ip route show ip interface show ip protocols debug ip rip config show ip rip database

13. How would an administrator configure a static route for use if a primary route failed? configure the route with a metric greater than the default value configure the route and the router will activate it as needed configure the route to activate by using the redistribute static command * configure the route with an administrative distance greater than the default value

14. Which of the following can exist in a distance vector network that has not converged? (Choose three.) * routing loops * inconsistent traffic forwarding no traffic forwarding until system converges * inconsistent routing table entries routing table updates sent to wrong destinations

15. When a routing table update is received by a router in a distance vector network, which of the following occurs? * The hop count metrics for the enclosed routes are incremented. The update is forwarded to the gateway router for verification. Path entries are checked for routing loops. The hop count metrics for the enclosed routes are decremented. Static routes are updated with the new information.

16. Which of the following routes within an IGRP autonomous system does not include subnet information? interior routes * system routes border routes exterior routes

17. The following line was displayed in the output of the show ip route command:

192.168.3.0/24 [100/80135] via 192.168.2.2, 00:00:30, Serial0/0

Based on this information, which routing protocol is enabled?

IP RIP * IGRP IGP OSPF

18. A router has routes to several subnets of a classful network in its routing table. A default route is defined on the router but the ip classless command is disabled. If the router receives packets for a subnet that is not in its routing table but is in the same classful network as the other subnets, what will happen to the packets? The packets will be forwarded using the default route. The packets will be forwarded using a route to one of the other subnets of the classful network. A nonreachable message will be returned to the source. * The packets will be discarded. The router will generate a new route to the subnetted network.

19. According to the router output from the show ip route command shown above, which of the following statements are true? (Choose two.) The metric to network 192.168.8.0 is 24. * The hop count to a device on network 192.168.8.0 is 2. The total path cost to network 192.168.4.0 is the default value of 16. * The logical address of the next router for network 192.168.1.0 is 192.168.3.1. The devices on network 192.168.5.0 cannot be reached as indicated by the 'C' label.

20. What happens to a static route entry in a routing table when the outgoing interface is not available? * The route is removed from the table. The router polls neighbors for a replacement route. The route remains in the table because it was defined as static. The router redirects the static route to compensate for the loss of the next hop device.

21. The administrator of the network depicted in the graphic would like to decrease the network's convergence time. How can this be accomplished? disable split horizon on the routers increase the update interval on the routers * change the RIP holddown timer to 96 seconds change the RIP holddown timer to 226 seconds

22. When does RIP send routing table updates? (Choose two.) * periodically, every 30 seconds periodically, every 60 seconds periodically, every 90 seconds * if optionally configured, when topology changes occur (triggered-update)

23. If the passive interface command is enabled on the fa0/0 interface of Router E, which statements are true? (Choose two.) Router E will send all routing updates via interface fa0/0. Router E will ignore all routing updates learned via interface fa0/0. * Router E will use routing updates learned via interface fa0/0. * Router E will not send routing updates via interface fa0/0.

24. Which statements describe load balancing when RIP is configured as the routing protocol? (Choose two.) * A router is allowed to take advantage of multiple best paths to a given destination. * RIP uses the round robin approach in load balancing. RIP load balancing selects a single path to forward all data to the destination even though equal parallel paths exist. RIP load balancing is based on bandwidth first and then the hop count. Only one path to a destination can be statically assigned or dynamically calculated.

25. Which statements describe RIP? (Choose three.) The maximum metric value is 255 hops. * The maximum metric value is 15 hops. * Routing updates occur every 30 seconds. Routing updates occur every 90 seconds. * It is a distance vector routing protocol. It is a link state routing protocol.

26. What do distance vector algorithms require each router in the network to send? a partial routing table to each router in the LAN a partial routing table to each router in the WAN * the entire routing table to each neighboring router the entire routing table to each router in the autonomous system

chapter 8

1. Which two statements are true regarding ICMP? (Choose two.) ICMP provides reliability for the TCP/IP protocol stack. * ICMP is a component of the TCP/IP protocol stack. * ICMP notifies the sender that data transmission errors have occurred. ICMP is connection-oriented. ICMP messages are propagated to all intermediate devices.

2. Which type of message is generated by a host when the ping command is entered? * ICMP echo request ICMP echo reply UDP echo request UDP error message

3. Which three conditions must be met in order for host to host communication over an internetwork to occur on IP networks? (Choose three.) The routing protocols configured on the source and destination networks must be the same. * A default gateway must be properly configured on the hosts and local networks. * Intermediary devices, such as routers, must be present on the network and have knowledge of how to reach the destination network. The source and destination host subnet masks must match. * The IP addresses of the hosts must be in the same network or subnet as their respective gateway devices.

4. How does ICMP improve data transfer reliability in IP networks? Each router in the path reads ICMP packets and uses the information to update routing tables. ICMP can correct many network problems as they occur. * ICMP error messages are returned to the sending device when a packet is dropped by a router. ICMP packets report the intermediary devices that a packet passed through before failure occurred.

5. Which of the following start the test of destination reachability? * echo request issued by source echo reply issued by source echo request issued by destination echo reply issued by destination

6. How does a source host use ICMP to confirm that a destination host is reachable? The source host sends an ICMP echo request to the destination router which responds with an ICMP echo reply confirming the reachability of the destination host. The source host sends a data packet and receives an ICMP host unreachable packet from the destination host if the data packet cannot be delivered. The source host sends an ICMP packet with a TTL value of 1 and receives an ICMP reply with a TTL value of 0 from the destination host. * The source host sends an ICMP echo request and receives an ICMP echo reply from the destination host.

7. Which devices along a data transmission path are notified by ICMP when delivery failures occur? * source devices only destination devices only intermediary devices source and destination devices source, intermediary, and destination devices

8. Workstation 1 sent a data packet to Workstation 4. It never arrived because Fa0/0 interface went down on Router C. How will the devices handle this failure? Workstation 4 will send an error message to Router C and Workstation 1 that it did not receive the packet. * Router C will use ICMP to send a message back to Workstation 1 indicating that the packet could not be delivered. Router C discards the packet without providing notification to any device. Router C uses ICMP to correct the failure and transmits the data to Workstation 4. Workstation 1 will use ICMP to correct the problem and then notify Router C to continue the transmission.

9. Which condition could cause a fragmentation needed ICMP destination unreachable message to be sent? A low bandwidth WAN link has become congested with IP traffic. * A packet is forwarded from a Token Ring network to an Ethernet network. A network is not reachable because of faulty routing information. The address specified by the sending host is nonexistent.

10. Which layer protocols provide reliability for IP when needed? ICMP and ping RIP and TTL * upper layer protocols lower layer protocols Internet layer protocols network access layer protocols

11. Which ICMP message is sent to a source host when the hop count to the destination is greater than the TTL value of a packet? echo reply timestamp reply destination unreachable * time exceeded source quench

12. When a datagram is processed by a router on the path from source to destination, what happens to the value in the TTL field?" It is increased by one. * It is decreased by one. It stays the same. It is reset to 0. Nothing.

Chapter 9

1. Which ICMP message type notifies source hosts that a receiving host or network is not available? time exceeded redirect * destination unreachable source quench parameter problem echo reply

2. The network administrator shown in the graphic can ping the E0 interface of the HAR router, but the telnet intranet.xyz.com command issued from her workstation fails to open a session with the intranet.xyz.com server. Which of the following could cause this problem? (Choose two.) * upper-layer application problems * domain name system problems IP debugging problems IP routing problems ICMP connectivity problems

3. After issuing the show interfaces command, a technician notices the line "Serial1 is down, line protocol is down" in the output. Which of the following are possible reasons for this message output? (Choose three.) There is a mismatch in the encapsulation type on both ends of the link. * A Layer 1 issue exists. * An interface problem exists. The clockrate was not set during configuration. * There is no usable media for the protocol. Keepalive messages are not being sent.

4. After issuing the show interfaces serial1 command, an administrator notices an increasing number of carrier transitions. What are the possible causes for this increase? (Choose two.) There is an incorrect encapsulation configured on the interface. * There could be an interruption in the line by the service provider. * There is a faulty switch or CSU/DSU. There is noise on the serial line.

5. When issuing the show interfaces serial1 command, a network administrator receives the output shown in the graphic. What are the possible causes of an increase in the number of input errors? (Choose three.) There could be Layer 3 addressing problems. * There could be a problem with faulty telephone equipment. * The router hardware could be defective. There is an incorrectly configured encapsulation on the interface. * There could be a problem with the cabling.

6. The show interfaces command provides line and protocol status information. Which of the following conditions would never occur in the output of this command? serial1 is up, line protocol is up serial1 is up, line protocol is down serial1 is down, line protocol is down * serial1 is down, line protocol is up serial1 is administratively down, line protocol is down

7. After issuing the command traceroute 192.168.4.2 from Router A, the following information is returned.

Tracing the route to Router_D (192.168.4.2)1 Router_B (192.168.2.2) 16 msec 16 msec 16 msec2 * * *3 * * *

What can be concluded about the network shown in the graphic based on the output given? Network 192.168.5.0 is missing from the routing table on Router A. * There is a problem with the connection between Router B and Router C. Router C is not running CDP. Some of the routers are non-Cisco devices. Router B was not able to return ICMP TEMs to Router A.

8. Which two are true regarding the output shown in the graphic? (Choose two.) Network 192.168.44.0 is 610 routers away from the source router. * A packet destined for host 192.168.80.24 will be forwarded out the Serial0 interface. The subnet mask for the networks is 255.255.255.240. * The router is receiving IGRP updates through its serial interface. This router is using three different routing protocols.

9. A network administrator suspects that a network is not being included in the routing updates. Which command will provide information on when the next update is due and which networks are advertised in the update? Router# show interfaces Router# show controllers serial * Router# show ip protocols Router# show ip route Router# show running-config

10. Which two are true regarding the debug commands? (Choose two.) Debug commands may be issued from the user EXEC prompt. * The command undebug all will turn off all debug operations. By default, the router sends the debug output and messages to the telnet session. * The high processor overhead incurred using debug may disrupt normal router operation. The debug all command provides a summary view of router activity and can be used frequently for troubleshooting. The show debugging command will display current events such as traffic on an interface and error messages generated by nodes on the network.

11. Which of the following lines from the show interfaces output would indicate a Layer 2 problem? Serial1 is up, line protocol is up. * Serial1 is up, line protocol is down. Serial1 is down, line protocol is down. Serial1 is administratively down, line protocol is down. 12. Which of the following would be the default administrative distance of a static IP route that references the IP address of the next hop? 0 * 1 5 20

13. During the lookup process when forwarding a packet, a router checks its routing table for the best path to the destination. If a route has an administrative distance of 0, what does this indicate to the router? The packet should be discarded. The destination is unreachable. * The destination is a directly connected network. The source of the update for that route is unreliable.

14. Which command will display routing table information about all known networks and subnetworks? Router# show ip interfaces Router# show ip connections * Router# show ip route Router# show ip networks

15. Which of the following are advantages of using a static route? (Choose three.) * secure operation highly adaptable low maintenance configuration * low processor overhead * precise control of path selection

16. Consider the RIP network shown in the diagram. Which entries would be listed in the routing table of Router A? R 192.168.5.2[120/1] via 192.168.15.0, 00:00:09, Serial0 R 192.168.15.0[120/1] via 192.168.5.2, 00:00:13, Serial1 * R 192.168.15.0[120/1] via 192.168.5.1, 00:00:13, Serial0 R 192.168.5.1 [120/1] via 192.168.5.2 00:00:29, Serial1R 192.168.15.0 [120/1] via 192.168.5.2, 00:00:29, Serial1 R 192.168.5.1 [120/1] via 192.168.5.2 00:00:18, Serial0R 192.168.15.2 [120/1] via 192.168.5.2, 00:00:18, Serial0

17. Why does a router build a routing table? (Choose two.) * to list available routes for forwarding data to map local Layer 2 addresses to the remote Layer 3 destination address to dynamically send periodic updates regarding the router's status to prevent routing loops when redundant links are added to the network * to select the best path to a destination

18. Which of the following commands can be used to statically configure default routes? (Choose two.) ip static-route * ip route ip network-route * ip default-network ip default-static

19. Which command will verify the functionality of all seven layers of the OSI model on a network host? ping debug * telnet traceroute

20. Which items would be displayed when the show ip protocols command is executed? (Choose three.) * sources of routing updates * networks being advertised routing protocol up or down configured routed protocols Layer 2 status of the interface * update timer values

21. Which of the following is a problem at the physical layer of the OSI model? incorrect file formatting incorrect encapsulation on a serial interface incorrect routing protocol * incorrect cable type

22. Which three correctly pair a routing metric with its description? (Choose three.) * hop count - the number of routers traversed to reach a destination bandwidth - the amount of time it takes a packet to travel a link * load - the amount of activity on a link delay - the link speed * reliability - the error rate on a link

23. The network administrator is using a PC to access a router via the router console port. Both the PC and the router are powered on and a cable has been connected between them. However, a session cannot be established. Which steps might fix this problem? (Choose two.) * Verify the cable is properly connected at each end. Reseat the network card in the PC. * Verify the cable is the correct type. Verify that a password has been set on the console line. Check the transceiver for link lights. Reseat the console card on the router.

24. A network technician has discovered that a router in the network can no longer be reached. The technician attempts to verify Layer 1 functionality, but is unable to physically inspect the cables. Which command can be used to determine the type of cable connected to the router? Router# show interfaces * Router# show controllers serial Router# show ip route Router# show ip protocol Router# show version Router# show running-config

25. When the show cdp neighbors command is issued from Router C, which devices will be displayed in the output? D, SWH-2 A, B, D SWH-1, SWH-2 * B, D SWH-1, A, B A, B, D, SWH-1, SWH-2

26. Refer to the network graphic. A packet needs to travel from Router_F to Router_A. Which path would be selected by the IGRP routing protocol if the default metrics are used? F,E,D,C,A F,G,E,D,B,A * F,E,D,B,A F,G,E,D,A F,E,D,A

Chapter 10

1. When a host receives a data segment, what allows the host to determine which application should receive the segment? IP source address IP destination address PAR sliding window * port number SYN packet

2. What is the purpose of using port numbers in the transport layer? to identify the segment as being either TCP or UDP to provide reliability during data transport to identify the interface port number used by the router when forwarding data * to track multiple conversations that occur between hosts

3. Which transport layer unit of information places the port number in the header? data * segment packet frame bit

4. Why is TCP considered a connection-oriented protocol?

It establishes a virtual connection between hosts using a two-way handshake. It uses IP to guarantee delivery of packets between hosts. * It requires hosts to go through a synchronization process prior to data transmission. It creates a connection that depends on application layer protocols for error detection.

5. Which of the following would an administrator do to defend against a denial of service SYN flooding attack? (Choose two.) Hide the source of incoming IP addresses. * Decrease the connection timeout period. Synchronize all host communication. * Increase the connection queue size. Flood the network with false SYN requests.

6. Which of the following protocols uses UDP for transport layer services? SMTP HTTP * DNS FTP

7. How are originating source port numbers assigned during the data encapsulation process? assigned manually by the user when starting the application * assigned dynamically by the source host assigned by the routing protocol during the lookup process assigned by the destination host during session negotiation

8. During the encapsulation process, in which order are the IP address, MAC address, and port number assigned when the router is establishing communication with the TFTP server? IP address, MAC address, port number MAC address, IP address, port number * port number, IP address, MAC address port number, MAC address, IP address

9. What is used by both TCP and UDP when creating a segment? IP address MAC address IPX address * socket or port number acknowledgment number sequence number

10. Which authority has control over the assignment of port numbers for applications? IEEE * IANA InterNIC Software Developers Association

11. What type of segment and data is shown in the graphic? a UDP segment carrying e-mail traffic a TCP segment carrying FTP traffic an IP segment carrying FTP traffic a UDP segment carrying web traffic * a TCP segment carrying web traffic an IP segment carrying e-mail traffic

12. Which of the following describes a type of denial of service attack designed to exploit the normal function of the TCP three-way handshake? * A host sends a packet with a spoofed source IP address. A host sends a packet with an incorrect destination IP address. A source sends a packet containing a garbled header. A host sends an oversized packet that fills the memory buffers of the destination host. A host sends a packet that contains a virus. A host sends a packet that contains a worm.

13. What is the purpose of Positive Acknowledgment and Retransmission (PAR)? PAR allows the presentation layer to request that data be resent in a format the destination host can process. PAR provides a mechanism for the receiving device to request that all segments be retransmitted if one segment is corrupt. * PAR helps ensure that a number of data segments sent by one host are received by another host before additional data segments are sent. PAR is used to renegotiate the window size during the synchronization process.

14. What is used by UDP to determine if the data or header has been transferred without corruption? lower layer protocols * checksum PAR sliding window acknowledgment and retransmission IP

15. What does TCP use to ensure reliable delivery of data segments?

upper layer protocols lower layer protocols * sequence numbers port numbers

16. At which point in the transmission process are segments numbered? when received when reassembling * before transmission while negotiating window size

17. A computer programmer is developing software that requires a reliable stream of data. Which protocol can be used in the software design to eliminate the need for building error detection and recovery into the application program? * TCP IP ICMP UDP HTTP

18. Which of the following are functions of the TCP protocol? (Choose three.) translation of data * synchronization path determination * flow control data representation * reliability

19. Which of the following describe types of port numbers that can be represented in the headers of TCP and UDP segments? (Choose three.) connectionless * well-known operational * dynamic * registered static

20. What is dynamically assigned by the source host when forwarding data? destination IP address destination port number default gateway address source IP address * source port number

21. Which of the following describe how TCP adds reliability to communication? (Choose three.) * Hosts using TCP set up virtual circuits at the beginning of the transmission using the three-way handshake. Hosts using TCP set the error-checking frequency at the beginning of the transmission and maintain this frequency for the duration of the data transfer. * When a sending host does not receive an acknowledgment within a timed interval it retransmits data. * The receiving host acknowledges that it has received the expected number of segments and requests additional data. The receiving host acknowledges any incorrectly received data and requests retransmission of damaged or missing bytes. The sending host transmits each segment twice to ensure that data is not lost.

22. What is the purpose of the three-way handshake that occurs between hosts using TCP as the transport layer protocol? to increase the number of packets that can be sent before an acknowledgment is required to allow a host to forward data to a router * to establish a round trip connection between sender and receiver before data is transferred to provide a mechanism for data encryption and compression

23. In the TCP header, which of the following determines the amount of data that can be sent before receiving an acknowledgment? segment number priority number * window size value in the length field value in the port field acknowledgment number

chapter 11

1. Create a standard ACL that will deny traffic from 192.5.5.25 to the 210.93.105.0 network but will allow traffic from all other hosts. (Choose two.) Router(config)# access-list 22 deny 192.5.5.25 0.0.0.0 Router(config)# access-list 22 deny host 192.5.5.25 0.0.0.0Router(config)# access-list 22 permit any any

* Router(config)# access-list 22 deny 192.5.5.25 0.0.0.0Router(config)# access-list 22 permit any * Router(config)# access-list 22 deny host 192.5.5.25Router(config)# access-list 22 permit any

Router(config)# access-list 22 deny 192.5.5.0 0.0.0.255Router(config)# access-list 22 permit any

2. Create an access list that will prevent only the host 192.5.5.148 from accessing a web site located at 210.93.105.50. access-list 10 deny tcp host 192.5.5.148 host 210.93.105.50 eq 80access-list 10 permit tcp any any access-list 10 deny tcp 192.5.5.148 0.0.0.0 210.93.105.50 0.0.0.0 eq 23access-list 10 permit tcp any any * access-list 100 deny tcp 192.5.5.148 0.0.0.0 210.93.105.50 0.0.0.0 eq 80access-list 100 permit tcp any any access-list 100 deny tcp 192.5.5.148 0.0.0.255 210.93.105.50 0.0.0.255 eq 80access-list 100 permit tcp any any access-list 100 deny tcp host 192.5.5.148 255.255.255.255 210.93.105.50 255.255.255.255 eq 80access-list 100 permit tcp any any

3. Which statement is true regarding wildcard masks? The wildcard mask and subnet mask perform the same function. The wildcard mask is always the inverse of the subnet mask. * A "0" in the wildcard mask identifies IP address bits that must be checked. A "1" in the wildcard mask identifies a network or subnet bit.

4. The following commands were entered on a router:

Router(config)# access-list 2 deny 172.16.5.24Router(config)# access-list 2 permit any

What can be concluded about this set of commands? The access list statements are misconfigured. All nodes on 172.16.0.0 will be denied access when these statements are applied. * The default wildcard mask, 0.0.0.0 is assumed. The default wildcard mask 255.255.255.255 is assumed.

5. ACL statements operate in sequential, logical order. If a condition match is true, the rest of the ACL statements are not checked. If all of the ACL statements are unmatched, what happens to the packet? The packets will be placed in a buffer and forwarded when the ACL is removed. The packets will be sent to the source with an error notification message. The implicit permit any statement placed at the end of the list will allow the packets to flow through uninhibited. * The implicit deny any statement placed at the end of the list will cause the packets to be dropped. 6. Select the statements that describe ACL processing of packets. (Choose three.) * An implicit deny any rejects any packet that does not match any ACL statement. * A packet can either be rejected or forwarded as directed by the statement that is matched. A packet that has been denied by one statement can be permitted by a subsequent statement. A packet that does not match the conditions of any ACL statements will be forwarded by default. * Each statement is checked only until a match is detected or until the end of the ACL statement list. Each packet is compared to the conditions of every statement in the ACL before a forwarding decision is made.

7. Choose the command that will correctly configure a standard ACL. Router# access-list 10 permit any Router# access-list 101 permit any * Router(config)# access-list 10 permit any Router(config)# access-list 101 permit any Router(config)# access-list 10 permit any any

8. Choose the commands that will correctly configure a standard ACL. (Choose two.) * Router(config)# access-list 97 permit host 192.5.5.1 * Router(config)# access-list 32 permit 210.93.105.3 0.0.0.0 Router(config)# access-list 148 permit 201.100.11.2 0.0.0.0 Router(config)# access-list 107 permit host 192.5.5.1 213.45.27.0 0.0.0.255 eq 23 Router(config)# access-list 10 permit tcp 192.5.5.1 0.0.0.255 201.100.11.0 0.0.0.255 eq 80

9. Select the commands that will apply the ACL in the diagram to filter traffic going to the 192.168.2.0 network. Router1# configure terminalRouter1(config)# access-list 10 in E0 Router1(config)# interface ethernet 0

Router1(config-if)# access-list 10 in Router2(config)# interface s1Router2(config-if)# ip access-group 10 out * Router2(config)# interface ethernet 0Router2(config-if)# ip access-group 10 out Router1(config)# interface ethernet 0Router1(config-if)# ip access-group 10 out Router2# configure terminalRouter2(config)# access-group 10 out

10. Which of the following parameters can ACLs use to filter traffic? (Choose three.) packet size * protocol suite * source address * destination address source router interface destination router interface

11. Which of the following matches an ACL identification number with the correct protocol?(Choose three.) 0 - standard IP * 99 - standard IP * 100 - extended IP 210 - extended IP 678 - extended IPX * 888 - standard IPX

12. Select the correct statements about extended ACLs. (Choose two) Extended ACLs use a number range from 1-99. Extended ACLs end with an implicit permit statement. * Extended ACLs evaluate the source and destination addresses. * Port numbers can be used to add greater definition to an ACL. Multiple ACLs can be placed on the same interface as long as they are in the same direction.

13. Which of the following are reasons to use ACLs? (Choose three.) * to provide a basic level of security for network access to speed up network performance by filtering priority packets * to preserve bandwidth by providing a mechanism for traffic flow control to decide which packets are forwarded or blocked at the router console port * to screen certain hosts to either allow or deny access to part of a network to allow all packets passing through the router access to all parts of the network

14. A router that has two Ethernet interfaces and one serial interface is configured to route both IP and IPX. What is the maximum number of IP ACLs that can be configured to filter packets on this router? 1 2 3 * 6 12

15. The router IOS tests each condition statement in an ACL in sequence. Once a match is made, which of the following occurs? (Choose two.) The entire ACL must be deleted and recreated. * The accept or reject action is performed. The packet is forwarded to the next hop. * The remaining ACL statements are not checked. The router goes through the list again to verify that a match has been made.

16. Which statements are true regarding the meaning of the access control list wildcard mask 0.0.0.7? (Choose two.) The first 29 bits of a supplied IP address will be ignored. * The last three bits of a supplied IP address will be ignored. The first 32 bits of a supplied IP address will be matched. * The first 29 bits of a supplied IP address will be matched. The last four bits of a supplied IP address will be matched.

17. Assuming the ACL in the graphic is correctly applied to an interface, what effect will the ACL have on network traffic? All traffic to network 172.16.0.0 will be denied. All TCP traffic will be permitted to and from network 172.16.0.0. * All telnet traffic from the 172.16.0.0 network to any destination will be denied. All port 23 traffic to the 172.16.0.0 network will be denied. All traffic from the 172.16.0.0 network will be denied to any other network.

18. Assuming the ACL in the graphic is correctly applied to an interface, what effect will this ACL have on network traffic? Host 192.168.15.4 will be denied ftp access to any destination, but will be permitted all other access. All ftp traffic to host 192.168.15.4 will be denied. * All traffic from that interface will be denied. No traffic will be denied because a "permit" statement does not exist in this ACL.

19. An access list has been created that will deny the host 204.204.7.89 access to an ftp server located at 196.6.13.254.

access-list 111 deny tcp 204.204.7.89 0.0.0.0 196.6.13.254 0.0.0.0 eq 21

access-list 111 permit tcp any any

Which of the following groups of commands will place this ACL in the proper location? Router2(config)# interface s0/0Router2(config-if)# ip access-group 111 in Router2(config)# interface fa0/0Router2(config-if)# ip access-group 111 out * Router2(config)# interface fa0/0Router2(config-if)# ip access-group 111 in Router3(config)# interface fa0/0Router3(config-if)# ip access-group 111 in Router3(config)# interface s0/1Router3(config-if)# ip access-group 111 out Router3(config)# interface fa0/0Router3(config-if)# ip access-group 111 out Final

1. What are some reasons to change the configuration register setting? (Choose two.) * to force the system to ignore the configuration file stored in NVRAM to monitor password changes to change the POST sequence to force the router to boot the IOS from NVRAM * to force the system into ROM monitor mode

2. In what order will the initial startup routine of a router locate and load the IOS if the config-register setting is 0x2102 and there are no boot system commands present in the startup-config file? Flash, ROM, TFTP server RAM, Flash, NVRAM * Flash, TFTP server, ROM ROM, TFTP server, Flash Flash, NVRAM, RAM ROM, Flash, TFTP server

3. Which statements are true regarding setup mode? (Choose three.) Press Ctrl-z to terminate setup mode. * Enter a question mark (?) for help at any point. Press Spacebar to accept the default settings. Use setup mode to enter complex protocol features. * Press Enter to accept the default settings. * Press Ctrl-c to abort configuration dialog.

4. During initial router bootup the following line appears:

"NVRAM invalid, possibly due to write erase."

What are two possible reasons for this result? (Choose two.) The startup-config file was not saved to RAM before reboot. The IOS has been erased. * The router has not been configured. * The startup-config file cannot be located. The router will not enter initial configuration dialog.

5. Which of the following are valid boot system commands? (Choose two.) Router(config)# boot system ram * Router(config)# boot system rom Router(config)# boot system IOS flash Router(config)# boot system flash c2600-d-mz.121-3 192.168.10.5 * Router(config)# boot system tftp c1700-l-mz.131-2 172.16.24.7

6. Router A and Router B have been correctly configured to use RIP as a dynamic routing protocol and all intefaces on Router A and Router B are reporting "interface is up, line protocol is up" status. RIP is then configured on Router C using the following commands:

RouterC(config)# router ripRouterC(config-router)# network 192.168.4.0RouterC(config-router)# network 172.16.0.0

If no additional routing is configured on Router A, Router B, and Router C, what will be the result? Networks 192.168.12.0/24, 192.168.4.0/24, and 172.16.0.0/16 will be unreachable from Router A. Router A will have no knowledge of network 192.168.12.0/24, but will have routes to networks 192.168.4.0/24 and 172.16.0.0/16. All networks shown in the graphic will be reachable by Router A, Router B, and Router C. * Networks 192.168.4.0/24 and 172.16.0.0/16 will be unreachable from Router A and Router B.

7. Router A is directly connected to the networks shown in the graphic and has a default route that points to Router B. All interfaces are active and properly addressed. However, when the workstation on network 172.16.4.0/24 sends a packet to destination address 172.16.201.5, it is discarded by Router A. What can be a reason for this result?

* The ip classless command is not enabled on Router A. Router B is in a different autonomous system than Router A. Routers A and B are using different routing protocols. Router A has no route in its routing table that includes the address 172.16.201.5.

8. A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A? A(config)# router ripA(config-router)# passive-interface S0/0 B(config)# router ripB(config-router)# network 192.168.25.48B(config-router)# network 192.168.25.64 A(config)# router ripA(config-router)# no network 192.168.25.32 * B(config)# router ripB(config-router)# passive-interface S0/0 A(config)# no router rip

9. Which router component stores the information that is displayed by the show ip route command? CPU Flash NVRAM * RAM

10. If a PC does not have network connectivity to a router, which router port can be used to establish communication? * console Ethernet serial VTY

11. Which router command will generate the router output shown in the graphic? * show arp show protocols show interface FastEthernet0/0 show interfaces show hardware

12. What information can be learned during the initial router bootup? (Choose two.) the configuration register value * the number and types of interfaces installed * the router model and the amount of memory that is available the amount of memory required to load the IOS and configuration the number of interfaces with connected cables

13. Which of the following could describe the devices labeled "?" in the graphic? (Choose three.) * DCE * CSU/DSU LAN switch * modem hub

14. Which of the following are primary functions of a router? (Choose two.) * packet switching microsegmentation domain name resolution * path selection flow control

15. Which of the following are correct statements verified by the router output shown in the graphic? (Choose two.) Layer 3 connectivity exists between BigCity and the devices in the Device ID column. * Layer 2 connectivity exists between BigCity and the devices in the Device ID column. All devices shown in the Device ID column use the TCP/IP protocol suite. All devices shown in the Device ID column can be pinged from BigCity. * All devices listed in the Device ID column are directly connected to BigCity.

16. What are the results of setting the boot field bits in the configuration register to "0000"? (Choose two.) The startup-config file will be ignored at bootup. The router will load the IOS from Flash. * The router will enter ROM monitor mode upon reload. The router will enter boot ROM mode and have limited capabilities. * The administrator can enter the b command to manually boot the IOS.

17. What can a network administrator do to recover from a lost router password? perform a reload or reset

telnet from another router and issue the show running-config command to view the password * boot the router to ROM monitor mode and configure the router to ignore NVRAM when it initializes boot the router to bootROM mode and enter the b command to load the IOS manually

18. Which router components and operations are correctly described? (Choose two.) ROM - stores the backup configuration file RAM - loads the operating system * NVRAM - stores the configuration file Flash - executes diagnostics at bootup * POST - runs diagnostics on hardware modules DRAM - loads the bootstrap

19. Which of the following commands will correctly configure an extended ACL? (Choose two). Router(config)# access-list 18 permit tcp host 192.168.73.3 eq 25 * Router(config)# access-list 102 permit tcp 10.43.0.0 0.0.255.255 any eq 80 * Router(config)# access-list 187 permit tcp host 192.168.42.34 172.29.0.0 0.0.255.255 eq 23 Router(config)# access-list 99 permit host 10.217.32.3 Router(config)# access-list 128 permit tcp host 192.168.100.31 eq 23

20. The following access list has been created to prevent traffic from host 172.23.40.36 from accessing the 192.168.34.0 network.

access-list 44 deny host 172.23.40.36access-list 44 permit any

Refer to the graphic. Which group of commands will properly place the access list so that the host is denied access only to network 192.168.34.0? Rome(config)# interface fa0/0Rome(config-if)# ip access-group 44 in Rome(config)# interface s0/1Rome(config-if)# ip access-group 44 out Tokyo(config)# interface s0/0Tokyo(config-if)# ip access-group 44 in * Tokyo(config)# interface fa0/0Tokyo(config-if)# ip access-group 44 out

21. Refer to the graphic. Communication is needed between the LAN connected to the fa0/0 interface of the Kansas router and the fa0/0 interface of the Maine router. All hosts on those LANs also need connectivity to the Internet. Which commands will allow this communication? (Choose three). * Kansas(config)# ip route 192.168.6.0 255.255.255.0 172.18.64.2 Kansas(config)# ip route 192.168.6.0 255.255.255.0 s0/1 * Kansas(config)# ip route 0.0.0.0 0.0.0.0 s0/1 Maine(config)# ip route 192.168.6.0 255.255.255.0 172.18.64.1 * Maine(config)# ip route 0.0.0.0 0.0.0.0 s0/1 Maine(config)# ip route 172.16.32.0 255.255.255.0 172.18.64.2

22. A network administrator must configure a serial interface with an IP address. The configuration must also identify the remote site to which the interface is connected. Which set of commands will meet these requirements? Chicago(config)# description San Jose T1Chicago(config)# interface serial0/0Chicago(config-if)# ip address 192.168.204.9 255.255.255.252 * Chicago(config)# interface serial0/0Chicago(config-if)# ip address 192.168.204.9 255.255.255.252Chicago(config-if)# description San Jose T1 Chicago(config)# interface serial0/0Chicago(config-if)# ip address 192.168.204.9 netmask 255.255.255.252Chicago(config-if)# description San Jose T1 Chicago(config)# interface serial0/0Chicago(config-if)# ip address 192.168.204.9 255.255.255.252Chicago(config-if)# remote site San Jose T1 Chicago(config)# interface serial0/0Chicago(config-if)# ip address 192.168.204.9 255.255.255.252Chicago(config-if)# interface description San Jose T1

23. A network administrator issues the erase startup-config command on a configured router with the configuration register set to 0x2102 and observes the following output:

Erasing the nvram filesystem will remove all files! Continue? [Confirm][OK]Erase of nvram: complete

If the router unexpectedly loses power after this sequence, what will occur when power is restored? The router will enter ROM monitor mode upon completion of the power-on self test (POST). The router will load the last known valid configuration file. The router will enter Rx-boot mode. * The router will prompt the user to enter setup mode or to continue without entering setup mode.

24. A network administrator wishes to load a configuration file from a TFTP server into NVRAM on a router. Which of the following methods will create a startup-config file in NVRAM that matches the contents of the configuration file on the TFTP server? * Copy the configuration file from a TFTP server using the command copy tftp startup-config. Copy the configuration file from a TFTP server using the command copy <filename< startup-config. Copy the file to RAM from a console connection using the copy tftp running-config command. Then reload the router to use the new configuration. Paste the configuration file to the command line of the router while in global configuration mode. Then issue the copy startup-config running-config command.

25. What will occur if the command service password-encryption is entered on a router? (Choose two). It will allow only the user EXEC mode password to be encrypted. It will set an MD5 hashing algorithm on all unencrypted passwords. * It will apply a weak encryption to all unencrypted passwords. It will set the enable secret password to be encrypted. It will apply an MD5 hashing algorithm to encrypt the console and telnet passwords. * It will configure the user EXEC mode, telnet, and enable passwords as encrypted.

26. Which of the following describe Ethernet and serial interfaces of a router? (Choose two.) They are enabled by default. * They may be administratively disabled by using the shutdown command. * They must be configured with an IP address and subnet mask in order to forward packets. They must be configured with an IP address and a clockrate in order to forward packets. They may be administratively disabled by using the no shutdown command.

27. Which of the following are true regarding the use of login banners? (Choose two.) The message is only displayed in privileged EXEC mode. * The message can be seen by everyone who accesses the router. "Good morning" is an appropriate message to display. * The banners should display warning messages. The banners should identify circuits and other devices connected to the router. 28. While planning an IOS upgrade, the administrator issues the show version command. Based on the output in the graphic, what is the current IOS boot location? RAM NVRAM * Flash ROM

29. Which of the following are true regarding an interface description? (Choose three.) It is a message that is displayed at login. * It does not affect the operation of the router. It contains the circuit identifiers of the interface by default. * It could allow support personnel to better understand the scope of an interface problem. * It could identify the purpose and location of the interface. It wastes bandwidth and slows down interface problem resolution.

30. Which of the following describe Telnet on a router? (Choose two.) * Simultaneous incoming Telnet sessions can be hosted by a router. Telnet is the most basic testing mechanism available. A Telnet session can only be initiated in privileged EXEC mode. * Five separate Telnet lines are specified by the configuration line vty 0 4. Telnet is classified as a network layer protocol.

31. Neither router in the graphic has a host table or DNS available. The interfaces and passwords have been correctly configured. Which of the following commands will initiate a Telnet session? (Choose two.) ATL> connect CHI ATL> telnet CHI * ATL# 192.168.4.2 ATL# connect ATL * CHI# telnet 192.168.4.1 CHI# telnet ATL

32. Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two.)

Router(config)# line vty 0 3Router(config-line)# password c13c0Router(config-line)# login

The entries specify three Telnet lines for remote access. * The entries specify four Telnet lines for remote access. The entries set the console and Telnet password to "c13c0". Telnet access will be denied because the Telnet configuration is incomplete. * Access will be permitted for Telnet using "c13c0" as the password.

33. Assuming the following ACL is correctly applied to a router interface, what can be concluded about this set of commands? (Choose two.)

Router(config)# access-list 165 deny tcp 192.28.115.0 0.0.0.255 172.20.0.0 0.0.255.255 eq 23Router(config)# access-list 165 permit ip any any

This is a standard IP access list that denies network 192.28.115.0 Telnet access to the 172.20.0.0 network. All Telnet traffic destined for 172.20.0.0 from any network will be denied access. * Network 192.28.115.0 is denied Telnet access to the 172.20.0.0 network. Network 172.20.0.0 is denied Telnet access to the 192.28.115.0 network. * All FTP and HTTP traffic destined for 172.20.0.0 will be permitted access.

34. The following access list has been correctly applied to a router interface:

access-list 52 deny 172.30.65.52access-list 52 permit any

Which of the following statements are true about this ACL? (Choose three.) This is an invalid ACL because the wildcard mask is missing from the command. * A wildcard mask of 0.0.0.0 is assumed for 172.30.65.52. This is an extended IP access list. * All traffic from 172.30.65.51 will be permitted. * This is a standard IP access list.

35. access-list 199 deny tcp 178.15.0.0 0.0.255.255 any eq 23access-list 199 permit ip any any

Assuming this ACL is correctly applied to a router interface, which statements describe traffic on the network? (Choose two.) * All FTP traffic from network 178.15.0.0 will be permitted. All Telnet traffic destined for network 178.15.0.0 will be denied. Telnet and FTP will be permitted from all hosts on network 178.15.0.0 to any destination. * Telnet will not be permitted from any hosts on network 178.15.0.0 to any destination. Telnet will not be permitted to any host on network 178.15.0.0 from any destination.

36. Refer to the graphic. Which command will create a standard ACL that will apply to outbound traffic on interface Fa0/0 of router A and will deny IP traffic from any host on network 172.16.34.0/24 that is destined for network 192.168.5.0/24 while allowing all other IP traffic? access-list 2 deny 172.16.34.0 0.0.0.0access-list 2 permit any * access-list 33 deny 172.16.34.0 0.0.0.255access-list 33 permit any access-list 42 deny 172.16.34.0access-list 42 permit any access-list 56 deny tcp 172.16.34.0access-list 56 permit ip any

37. Refer to the network and routing table entries shown in the graphic. How much time will elapse before Router A expects to receive another update from Router B? 5 seconds 13 seconds * 17 seconds 25 seconds 65 seconds 90 seconds

38. Refer to the graphic. Which series of commands will create static routes that will allow Router A and Router B to deliver packets destined for LAN A and LAN B, and direct all other traffic to the Internet? RouterA(config)# ip route 10.90.3.0 255.255.255.0 192.168.3.2RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0 RouterA(config)# ip route 10.90.3.0 255.255.255.0 192.168.3.2RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1 RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1RouterB(config)# ip route 172.20.20.4 255.255.255.252 s0/0 * RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0

39. Which ACL can be applied in the outbound direction of Serial 0/0 on router B in the graphic to allow all IP traffic from LAN A to the Internet, allow Web traffic from LAN B to the Internet, and deny all other traffic to the Internet? access-list 98 permit 192.168.2.0 0.0.0.255 anyaccess-list 98 permit tcp 10.90.3.0 0.0.0.255 any eq www * access-list 125 permit ip 192.168.2.0 0.0.0.255 anyaccess-list 125 permit tcp 10.90.3.0 0.0.0.255 any eq www access-list 132 permit ip 192.168.2.0 0.0.0.255 anyaccess-list 132 permit tcp 10.90.3.0 0.0.0.255 any eq wwwaccess-list 132 permit ip any any access-list 156 permit ip 192.168.2.0 0.0.0.255 any

access-list 156 permit ip 10.90.3.0 0.0.0.255 any eq www

40. What will occur when the following ACL is applied inbound to both FastEthernet interfaces of Router A in the graphic?

access-list 125 permit tcp 192.168.2.0 0.0.0.255 10.90.3.0 0.0.0.255 eq 23access-list 125 permit tcp 10.90.3.0 0.0.0.255 192.168.2.0 0.0.0.255 eq 23access-list 125 permit tcp 192.168.2.0 0.0.0.255 any eq www * Workstations A and B will be able to Telnet to each other. Workstation A will be allowed to access Web servers on the Internet, while Workstation B will be denied Internet Web access. Workstations A and B will be able to Telnet to each other. All other traffic will be denied. The ACL will have no effect because it should be applied in the outbound direction on the FastEthernet interfaces. The ACL will deny all traffic because of the implied deny ip any any statement at the end of the ACL.

41. Which of the following prevent successful loading of the Cisco IOS from flash memory? (Choose two.) a configuration register set at 0x2102 a missing startup-configuration file * a boot system command not present in the startup-config file * an incorrect configuration register setting a boot field set to 2

42. Refer to the graphic. A network administrator has a console connection to Router A. Pings to Router B are successful, but pings to Routers C and D fail. What is the first step in troubleshooting the problem? Use the show cdp neighbors detail command from router A to gather information about all Cisco routers in the network. Use the traceroute command to discover exactly which link in the network is down. Use an extended ping from router A to each router in the network. * Use the show interfaces command from a Telnet session on router B to check the connection to router C.

43. Which of the following describes CDP? (Choose three.) * provides information on directly connected Cisco routers that have CDP enabled * can only be configured between Cisco devices used for debugging Layer 4 connectivity issues should be disabled on non-locally managed ports * presents a potential security risk

44. Which two steps describe how to create a functional physical connection between a router console and a terminal? (Choose two.) Use a crossover cable to connect the terminal serial port to the router console port. Use a rollover cable to connect the terminal NIC to the router console port. * Use an RJ-45 to DB-9 adapter on the terminal serial port to connect to the cable going to the router console. Use a transceiver to connect a straight-through cable to the router console port. Use a straight-through cable to connect the router console port to the terminal NIC. * Use a rollover cable to connect from a terminal serial port to the router console port.

45. Refer to the graphic. Assuming default metrics are used and the network is fully converged, which path will the IGRP routing protocol use to send a packet from Router A to Router F? A, D, E, F * A, B, D, E, F A, C, D, E, G, F A, B, D, E, G, F

46. Based on this partial output of the show ip route command, which routing protocol is configured on the router?

I 172.16.3.0/24 [100/80135] via 172.16.2.2, 00:00:27, Serial0/0

RIP v1 RIP v2 * IGRP EIGRP OSPF IGP

47. Which of the following statements are true regarding routed protocols? (Choose two.) * They provide enough information in the Layer 3 address to allow a packet to be forwarded from one network to another. * They carry user data between networks. They allow routers to share information about networks and their proximity to each other. They are used by routers to maintain routing tables. RIP and IGRP are routed protocols.

48. What could a Cisco support technician learn from the IOS filename c2600-d-mz.121-3? (Choose three.)

* the format of the file the RAM memory requirements of the file * the version number of the file the size of the file * the device platform of the file

49. Which commands will show the status and IP address of all interfaces on a router? (Choose two.) * show protocols show ip protocols show version * show interfaces show ip ports

50. Which of the following are true statements regarding IGRP and RIP? (Choose two.) * IGRP uses a combination of different metrics for path selection. RIP is a proprietary protocol developed by Cisco. RIP has the ability to scale to large networks. * IGRP has the ability to scale to large networks.

Final – form D 1 a

1. What are some reasons to change the configuration register setting? (Choose two.)

* to force the system to ignore the configuration file stored in NVRAM

to monitor password changesto change the POST sequenceto force the router to boot the IOS from NVRAM* to force the system into ROM monitor mode

2. Given the output shown in the exhibit, in what order and location will the router search for the IOS if no boot system commands are found in the startup-config file?

ROM, Flash, TFTP serverFlash, NVRAM, RAMROM, TFTP server, FlashRAM, Flash, NVRAM* Flash, TFTP server, ROM

3. Which statements are true regarding setup mode? (Choose three.)Press Ctrl-z to terminate setup mode.* Enter a question mark (?) for help at any point.Press Spacebar to accept the default settings.Use setup mode to enter complex protocol features.* Press Enter to accept the default settings.* Press Ctrl-c to abort configuration dialog.

4. During initial router bootup the following line appears: "NVRAM invalid, possibly due to write erase." What are two possible reasons for this result? (Choose two.)

The startup-config file was not saved to RAM before reboot.The IOS has been erased.* The router has not been configured.* The startup-config file cannot be located.The router will not enter initial configuration dialog.

5. A new technician must add boot system commands to one of the department routers. Which available commands will the router return as output when the command shown below is entered? (Choose two.) Router(config)# boot system ?

RAMNVRAMIOSIP Address* TFTP* FLASH

6. Router A and Router B have been correctly configured to use RIP as a dynamic routing protocol and all intefaces on Router A and Router B are reporting "interface is up, line protocol is up" status. RIP is then configured on Router C using the following commands: RouterC(config)# router rip RouterC(config-router)# network 192.168.4.0 RouterC(config-router)# network 172.16.0.0 If no additional routing is configured on Router A, Router B, and Router C, what will be the result?

Networks 192.168.12.0/24, 192.168.4.0/24, and 172.16.0.0/16 will be unreachable from Router A.

Router A will have no knowledge of network 192.168.12.0/24, but will have routes to networks 192.168.4.0/24 and 172.16.0.0/16.

All networks shown in the graphic will be reachable by Router A, Router B, and Router C.

* Networks 192.168.4.0/24 and 172.16.0.0/16 will be unreachable from Router A and Router B.

7. The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result?

The ip classless command is not enabled on the Richmond router.The route was ignored if the Richmond router did not include the

172.29.198.0/24 network in its routing updates.The Richmond router is in a different autonomous system than the

Suffolk router.The ip subnet-zero command was not configured on the Suffolk

router.* The ip classless command is not enabled on the Suffolk router.

8. A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A?

A(config)# router rip A(config-router)# passive-interface S0/0B(config)# router rip B(config-router)# network 192.168.25.48

B(config-router)# network 192.168.25.64A(config)# router rip A(config-router)# no network 192.168.25.32* B(config)# router rip B(config-router)# passive-interface S0/0A(config)# no router rip

9. Which router component stores the information that is displayed by the show running-config command?

flashNVRAM* RAMROM

10. If a PC does not have network connectivity to a router, which router port can be used to establish communication?

* consoleEthernetserialVTY

11. What information can be learned during the initial router bootup? (Choose two.)

the configuration register value* the number and types of interfaces installed* the router model and the amount of memory that is availablethe amount of memory required to load the IOS and configurationthe number of interfaces with connected cables

12. Which devices can be used to convert the data from a WAN router at the customer site into a form acceptable for use by the WAN service provider? (Choose three.)

Ethernet switchDTE* modemhub* DCE device* CSU/DSU

13. What are the primary functions of a router? (Choose two.)* determine the best path for packetsprevent collisions on the network LANregulate flow control between sender and receiverprovide domain name resolution* forward packets to the appropriate interface

14. Which of the following are correct statements verified by the router output shown in the graphic? (Choose two.)

Layer 3 connectivity exists between BigCity and the devices in the Device ID column.

* Layer 2 connectivity exists between BigCity and the devices in the Device ID column.

All devices shown in the Device ID column use the TCP/IP protocol suite.

All devices shown in the Device ID column can be pinged from BigCity.

* All devices listed in the Device ID column are directly connected to BigCity.

15. What are the results of setting the boot field bits in the configuration register to "0000"? (Choose two.)

The startup-config file will be ignored at bootup.The router will load the IOS from Flash.* The router will enter ROM monitor mode upon reload.The router will enter boot ROM mode and have limited

capabilities.* The administrator can enter the b command to manually boot the

IOS.

16. What can a network administrator do to recover from a lost router password?

perform a reload or resettelnet from another router and issue the show running-config

command to view the password* boot the router to ROM monitor mode and configure the router to

ignore NVRAM when it initializesboot the router to bootROM mode and enter the b command to

load the IOS manually

17. Which router components and operations are correctly described? (Choose two.)

* RAM - stores the ARP cacheNVRAM - store the operating system* ROM - stores the backup IOSPOST - verifies the validity of the running-configFlash - executes diagnostics at bootupDRAM - loads the bootstrap

18. Which of the following commands will correctly configure an extended ACL? (Choose two).

Router(config)# access-list 18 permit tcp host 192.168.73.3 eq 25* Router(config)# access-list 102 permit tcp 10.43.0.0 0.0.255.255

any eq 80* Router(config)# access-list 187 permit tcp host 192.168.42.34

172.29.0.0 0.0.255.255 eq 23Router(config)# access-list 99 permit host 10.217.32.3

Router(config)# access-list 128 permit tcp host 192.168.100.31 eq 23

19. The following access list has been created to prevent traffic from the 192.0.2.63 host on the Sales LAN from accessing servers and hosts on the Payroll LAN. access-list 26 deny host 192.0.2.63access-list 26 permit any Refer to the exhibit. Which group of commands will properly place the access list so that only the host on the Sales LAN is denied access to the 172.29.7.0 network but all other traffic is permitted?

Payroll(config)# interface fa0/0 Payroll(config-if)# ip access-group 26 out

* Payroll(config)# interface fa0/1 Payroll(config-if)# ip access-group 26 out

Sales(config)# interface fa0/1 Sales(config-if)# ip access-group 26 in

Sales(config)# interface fa0/0 Sales(config-if)# ip access-group 26 out

20. Refer to the graphic. Communication is needed between the LAN connected to the fa0/0 interface of the Kansas router and the fa0/0 interface of the Maine router. All hosts on those LANs also need connectivity to the Internet. Which commands will allow this communication? (Choose three).

* Kansas(config)# ip route 192.168.6.0 255.255.255.0 172.18.64.2Kansas(config)# ip route 192.168.6.0 255.255.255.0 s0/1* Kansas(config)# ip route 0.0.0.0 0.0.0.0 s0/1Maine(config)# ip route 192.168.6.0 255.255.255.0 172.18.64.1* Maine(config)# ip route 0.0.0.0 0.0.0.0 s0/1Maine(config)# ip route 172.16.32.0 255.255.255.0 172.18.64.2

21. A network administrator must configure a FastEthernet interface with an IP address. The configuration must also identify the remote site to which the interface is connected. Which set of commands will meet these requirements?

StPetersburg(config)# banner San Jose T1 StPetersburg(config)# interface fa0/0 StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252

StPetersburg(config)# interface fa0/0 StPetersburg(config-if)# ip address 172.26.155.5 netmask 255.255.255.252 StPetersburg(config-if)# description San Jose T1

StPetersburg(config)# interface fa0/0 StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252 StPetersburg(config-if)# banner remote site San Jose T1

* StPetersburg(config)# interface fa0/0 StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252 StPetersburg(config-if)# description San Jose T1

22. A network administrator issues the erase startup-config command on a configured router with the configuration register set to 0x2102 and observes the following output: Erasing the nvram filesystem will remove all files! Continue? [Confirm] [OK] Erase of nvram: complete If the router unexpectedly loses power after this sequence, what will occur when power is restored?

The router will enter ROM monitor mode upon completion of the power-on self test (POST).

The router will load the last known valid configuration file.The router will enter Rx-boot mode.* The router will prompt the user to enter setup mode or to

continue without entering setup mode.

23. The main router of XYZ company has enough flash and RAM to store multiple IOS images. An administrator wants to upload a second IOS image from a TFTP server to the flash of the router. Which method will accomplish this task?

Paste the IOS filename to the command line of the router while in global configuration mode. Press enter. Then issue the copy tftp flash command.

Use the setup utility to load the new image to flash.Copy the IOS image file from a TFTP server using the command

copy filename ip address flash .* Copy the IOS image file from a TFTP server using the command

copy tftp flash. When prompted, provide the IP address or name of the TFTP server and the IOS image filename.

24. What facts can be determined from the highlighted text shown in the exhibit? (Choose two.)

* A weak encryption was applied to all unencrypted passwords.The enable password is now more secure than the enable secret

password.An MD5 hashing algorithm was used on all encrypted passwords.* Any configured user EXEC mode or Telnet passwords will be

encrypted in this configuration.The service password-encryption command was used to encrypt all

passwords on the router including enable secret.

25. What are the features of a serial interface on a router? (Choose two.)enabled by defaultassigned a unique MAC addressmust be configured as a DCE in lab and production environmentsmust be configured with the default clock rate of 56000* may be administratively enabled by using the no shutdown

command* must be configured with a valid IP address and subnet mask in

order to forward packets

26. What are two recommended uses of login banners? (Choose two.)* to display security warning messagesto welcome any user to the routerto warn people about misusing privileged EXEC modeto identify circuits and other devices connected to the router* to announce a scheduled system shutdown

27. While planning an IOS upgrade, the administrator issues the show version command. Based on the output in the graphic, what is the current IOS boot location?

RAMNVRAM* FlashROM

28. Why are interface descriptions used in router configurations? (Choose three).

* to enable support personnel to easily identify networks and customers that may be affected by a possible interface issue

* to provide comments on the interface without affecting the router functionality

to display access warning messages before users enter the interface configuration mode

to eliminate the need to use IP addresses when using the ping and telnet commands

* to identify the purpose and location of the interface

29. What are two characteristics of the support for Telnet within Cisco IOS software? (Choose two.)

* Up to five separate Telnet lines are supported by default in standard edition IOS files.

For security purposes, Telnet sessions are required to be established from the privileged mode.

* A router can host simultaneous Telnet sessions.Once established, a Telnet session can remain operational

regardless of network status.Telnet tests wireless connectivity and does not require a physical

connection between devices to gain remote access.

30. Neither router in the exhibit has a host table or DNS available. The interfaces and passwords have been correctly configured. Which of the following commands will initiate a Telnet session? (Choose two.)

Tottenham# telnet Oxford* Tottenham> telnet 198.18.139.1Oxford# connect 198.18.139.0Oxford> connect TottenhamOxford# telnet Tottenham* Oxford# 198.18.139.2

31. From the running-config, the following configuration entries are displayed: Router(config)# line vty 0 2 Router(config-line)# password g8k33pr Router(config-line)# login What can be interpreted from the exhibited configuration? (Choose two.)

* Three Telnet lines are available for remote access.Two Telnet lines are available for remote access.Future configuration of the remaining Telnet lines will require the

password to be set to g8k33pr.To login to the remote device, g8k33pr will be used as the Telnet

and secret password.* Remote access to this local router will require a Telnet password

of g8k33pr.

32. Assuming the following ACL is correctly applied to a router interface, what can be concluded about this set of commands? (Choose two.) Router(config)# access-list 165 deny tcp 192.28.115.0 0.0.0.255 172.20.0.0 0.0.255.255 eq 23 Router(config)# access-list 165 permit ip any any

This is a standard IP access list that denies network 192.28.115.0 Telnet access to the 172.20.0.0 network.

All Telnet traffic destined for 172.20.0.0 from any network will be denied access.

* Network 192.28.115.0 is denied Telnet access to the 172.20.0.0 network.

Network 172.20.0.0 is denied Telnet access to the 192.28.115.0 network.

* All FTP and HTTP traffic destined for 172.20.0.0 will be permitted access.

33. What can be concluded from the output shown in the exhibit? (Choose three.)

* This is a standard IP access list.This is an extended IP access list.* The keyword host is implied in the command line access-list 99

deny 10.213.177.76.The wildcard mask must be configured for this access list to

function properly.* Host 10.213.177.100 will be allowed access to the Serial0/1

interface.

34. access-list 199 deny tcp 178.15.0.0 0.0.255.255 any eq 23access-list 199 permit ip any any Assuming this ACL is correctly applied to a router interface, which statements describe traffic on the network? (Choose two.)

* All FTP traffic from network 178.15.0.0 will be permitted.All Telnet traffic destined for network 178.15.0.0 will be denied.Telnet and FTP will be permitted from all hosts on network

178.15.0.0 to any destination.* Telnet will not be permitted from any hosts on network

178.15.0.0 to any destination.Telnet will not be permitted to any host on network 178.15.0.0

from any destination.

35. Hosts from the Limerick LAN are not allowed access to the Shannon LAN but should be able to access the Internet. Which set of commands will create a standard ACL that will apply to traffic on the Shannon router interface Fa0/0 implementing this security?

access-list 42 deny 172.19.123.0 0.0.0.255 192.0.2.0 0.0.0.255 access-list 42 permit any

* access-list 56 deny 172.19.123.0 0.0.0.255access-list 56 permit any

access-list 61 deny 172.19.123.0 0.0.0.0access-list 61 permit anyaccess-list 87 deny ip any 192.0.2.0 0.0.0.255access-list 87 permit

ip any

36. Refer to the exhibit. Router D interface S0 on has gone down. What is the maximum time that will elapse before Router A learns that network 168.58.14.0 is down?

5 seconds13 seconds* 17 seconds25 seconds30 seconds77 seconds

37. Refer to the graphic. Which series of commands will create static routes that will allow Router A and Router B to deliver packets destined for LAN A and LAN B, and direct all other traffic to the Internet?

RouterA(config)# ip route 10.90.3.0 255.255.255.0 192.168.3.2 RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1 RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0

RouterA(config)# ip route 10.90.3.0 255.255.255.0 192.168.3.2 RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2 RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1

RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2 RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1 RouterB(config)# ip route 172.20.20.4 255.255.255.252 s0/0

* RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2 RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1 RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0

38. Refer to the exhibit. The new security policy for the company allows all IP traffic from the Engineering LAN to the Internet while only web traffic from the Marketing LAN is allowed to the Internet. Which ACL can be applied in the outbound direction of Serial 0/1 on the Marketing router to implement the new security policy?

access-list 197 permit ip 192.0.2.0 0.0.0.255 any access-list 197 permit ip 198.18.112.0 0.0.0.255 any eq www

access-list 165 permit ip 192.0.2.0 0.0.0.255 any access-list 165 permit tcp 198.18.112.0 0.0.0.255 any eq www access-list 165 permit ip any any

* access-list 137 permit ip 192.0.2.0 0.0.0.255 any access-list 137 permit tcp 198.18.112.0 0.0.0.255 any eq www

access-list 89 permit 192.0.2.0 0.0.0.255 any access-list 89 permit tcp 198.18.112.0 0.0.0.255 any eq www

39. What will occur when the following ACL is applied inbound to both FastEthernet interfaces of Router A in the graphic? access-list 125 permit tcp 192.168.2.0 0.0.0.255 10.90.3.0 0.0.0.255 eq 23 access-list 125 permit tcp 10.90.3.0 0.0.0.255 192.168.2.0 0.0.0.255 eq 23 access-list 125 permit tcp 192.168.2.0 0.0.0.255 any eq www

* Workstations A and B will be able to Telnet to each other. Workstation A will be allowed to access Web servers on the Internet, while Workstation B will be denied Internet Web access.

Workstations A and B will be able to Telnet to each other. All other traffic will be denied.

The ACL will have no effect because it should be applied in the outbound direction on the FastEthernet interfaces.

The ACL will deny all traffic because of the implied deny ip any any statement at the end of the ACL.

40. What are two possible reasons a router would not load a valid IOS from flash? (Choose two.)

The configuration register is set to 0x2142.* The first boot system command executed in the startup

configuration file is boot system rom.* The configuration register is set to 0x2100.The boot field is set to the hexadecimal number 2.The startup configuration file is missing or corrupt.

41. A network administrator has a console connection to the Fremantle router. Pings to Melville are successful, but pings to Cottesloe and Nedlands fail. What could be a first step in troubleshooting the problem?

Use an extended ping from Fremantle to each router in the network.

* Use the show interfaces command from a Telnet session on Melville to check the connection to Cottesloe.

Use the traceroute command to discover exactly which link in the network is down.

Use the show cdp neighbors detail command from Fremantle to gather information about all Cisco routers in the network.

42. What are three features of CDP? (Choose three.)* provides information on directly connected devices that have

CDP enabled* tests Layer 2 connectivity* enabled by default on each interfaceprovides a layer of securityused for debugging Layer 4 connectivity issues

43. Which two steps describe how to create a functional physical connection between a router console and a terminal? (Choose two.)

Use a crossover cable to connect the terminal serial port to the router console port.

Use a rollover cable to connect the terminal NIC to the router console port.

* Use an RJ-45 to DB-9 adapter on the terminal serial port to connect to the cable going to the router console.

Use a transceiver to connect a straight-through cable to the router console port.

Use a straight-through cable to connect the router console port to the terminal NIC.

* Use a rollover cable to connect from a terminal serial port to the router console port.

44. Refer to the exhibit. Assuming default metrics are used and the network is fully converged, which path will RIP use to send a packet from Router A to Router F?

* A, D, E, FA, B, D, E, FA, C, D, E, G, FA, B, D, E, G, F

45. Based on this partial output of the show ip route command, which routing protocol is configured on the router? R 172.16.3.0/24 [120/3] via 172.16.2.2, 00:00:27, Serial0/0

* RIPEIGRPOSPFIGPBGP

46. Why are routed protocols important to networking? (Choose two.)Routed protocols detect collisions and fragments.Routers use routed protocols to calculate the best path to a

destination.* Routed protocols transport data across the network.* The fields and formats used within a packet are defined by routed

protocols.Routed protocols are used to configure the metrics used by routing

protocols.

47. What could a Cisco support technician learn from the IOS filename c2600-d-mz.121-3? (Choose three.)

* the format of the filethe RAM memory requirements of the file* the version number of the filethe size of the file* the device platform of the file

48. What critical information about the status of the router can be found in the outputs of both the show interfaces and show protocols commands? (Choose two.)

* the Layer 3 address of each configured interfacethe routing protocol configured to forward updates out of each

interface* the operational status of each interfacetraffic statistics for each interfacewhether the interface is configured as a DTE or DCE

final form d 2a

1. Why would an administrator change the value highlighted in the exhibit? (Choose two.)

to alter the POST sequenceto display output that tracks password changesto force the router to reboot immediately* to make the router bypass the startup-configuration file* to configure the router to boot the RXBOOT imageto force the router to load the IOS from NVRAM

2. In what order will the initial startup routine of a router locate and load the IOS if the config-register setting is 0x2102 and there are no boot system commands present in the startup-config file?

Flash, ROM, TFTP serverRAM, Flash, NVRAM* Flash, TFTP server, ROMROM, TFTP server, FlashFlash, NVRAM, RAMROM, Flash, TFTP server

3. Which procedures will work while configuring the router using the setup configuration utility? (Choose three.)

Type help to display a list of options available at the prompt.Press Ctrl-Shift-6, X to abort the configuration dialog.* Press Enter or the Return key to accept the default values.* Enter the address on an interface or add a new routing protocol

suite.* Press Ctrl-C to return to the privileged mode prompt or to

terminate setup mode.Type reload to save the changes created in setup mode and use the

new configuration.

4. During initial router bootup the following line appears: "NVRAM invalid, possibly due to write erase." What are two possible reasons for this result? (Choose two.)

The startup-config file was not saved to RAM before reboot.The IOS has been erased.* The router has not been configured.* The startup-config file cannot be located.The router will not enter initial configuration dialog.

5. A new technician must add boot system commands to one of the department routers. Which available commands will the router return as output when the command shown below is entered? (Choose two.) Router(config)# boot system ?

RAMNVRAMIOSIP Address* TFTP* FLASH

6. The Marshall and Fiji routers have been correctly configured to use RIP v1 as a dynamic routing protocol, and all interfaces on the Marshall and Fiji routers are reporting "interface is up, line protocol is up" status. RIP v1 is then configured on the Chatham router using the following commands: Chatham(config)# router rip Chatham(config-router)# network 198.18.100.0 Chatham(config-router)# network 172.23.0.0 If no additional routing is configured on Chatham, Marshall, or Fiji, what will be the result?

Networks 198.18.126.0/24, 198.18.100.0/24, and 172.23.0.0/16 will be unreachable from Fiji.

Fiji will have no knowledge of network 198.18.126.0/24, but will have routes to networks 198.18.100.0/24 and 172.23.0.0/16.

* Networks 198.18.100.0/24 and 172.23.0.0/16 will be unreachable from Marshall and Fiji.

All networks shown in the graphic will be reachable by Marshall, Fiji, and Chatham.

7. Router A is directly connected to the networks shown in the graphic and has a default route that points to Router B. All interfaces are active and properly addressed. However, when the workstation on network 172.16.4.0/24 sends a packet to destination address 172.16.201.5, it is discarded by Router A. What can be a reason for this result?

* The ip classless command is not enabled on Router A.Router B is in a different autonomous system than Router A.Routers A and B are using different routing protocols.Router A has no route in its routing table that includes the address

172.16.201.5.

8. A network administrator has enabled RIP on routers A and B in the network diagram. Which commands will prevent RIP v1 updates from being sent to Router C?

C(config)# router rip C(config-router)# no network 192.168.25.64C(config)# router rip C(config-router)# passive-interface S0/0* B(config)# router rip B(config-router)# passive-interface S0/1C(config)# no router ripB(config)# router rip B(config-router)# network 192.168.25.32

B(config-router)# network 192.168.25.48

9. Which router component stores the information that is displayed by the show arp command?

flashNVRAM* RAMROM

10. If a PC does not have network connectivity to a router, which router port can be used to establish communication?

* consoleEthernetserialVTY

11. What information can be learned during the initial router bootup? (Choose two.)

the configuration register value* the number and types of interfaces installed* the router model and the amount of memory that is availablethe amount of memory required to load the IOS and configurationthe number of interfaces with connected cables

12. Which devices can be used to convert the data from a WAN router at the customer site into a form acceptable for use by the WAN service provider? (Choose three.)

Ethernet switchDTE* modemhub* DCE device* CSU/DSU

13. Which of the following are primary functions of a router? (Choose two.)* packet switchingmicrosegmentationdomain name resolution* path selectionflow control

14. What can be determined from the output shown in the exhibit? (Choose two.)

Annapolis is a 2611 router that is connected to the S0/0 interface of the Montgomery router.

All of the routers are connected to Montgomery through an Ethernet switch.

* Montgomery has Layer 2 connectivity with Cumberland.Layer 3 connectivity is operational for all of the devices listed in

the Device ID column.An administrator consoled into the Waldorf router can ping the

Brant router.* Brant, Fisherman, and Potomac are directly connected to

Montgomery.

15. What are the results of setting the boot field bits in the configuration register to "0000"? (Choose two.)

The startup-config file will be ignored at bootup.The router will load the IOS from Flash.* The router will enter ROM monitor mode upon reload.The router will enter boot ROM mode and have limited

capabilities.* The administrator can enter the b command to manually boot the

IOS.

16. What can a network administrator do to recover from a lost router password?

perform a reload or resettelnet from another router and issue the show running-config

command to view the password* boot the router to ROM monitor mode and configure the router to

ignore NVRAM when it initializesboot the router to bootROM mode and enter the b command to

load the IOS manually

17. Which router components and operations are correctly described? (Choose two.)

ROM - stores the backup configuration fileRAM - loads the operating system* NVRAM - stores the configuration fileFlash - executes diagnostics at bootup* POST - runs diagnostics on hardware modulesDRAM - loads the bootstrap

18. Which commands will correctly configure an extended ACL? (Choose two.)

* Router(config)# access-list 192 permit icmp host 198.18.4.3 172.22.0.255 0.0.0.0 echo

* Router(config)# access-list 153 deny udp 10.43.0.0 0.0.255.255 any eq 161

Router(config)# access-list 98 permit tcp 192.0.2.3 0.0.0.0 eq 23Router(config)# access-list 99 deny host 198.18.0.5Router(config)# access-list 166 permit ip any eq 80

19. The following access list has been created to prevent traffic from host 172.23.40.36 from accessing the 192.168.34.0 network. access-list 44 deny host 172.23.40.36access-list 44 permit any Refer to the graphic. Which group of commands will properly place the access list so that the host is denied access only to network 192.168.34.0?

Rome(config)# interface fa0/0 Rome(config-if)# ip access-group 44 in

Rome(config)# interface s0/1 Rome(config-if)# ip access-group 44 out

Tokyo(config)# interface s0/0 Tokyo(config-if)# ip access-group 44 in

* Tokyo(config)# interface fa0/0 Tokyo(config-if)# ip access-group 44 out

20. Refer to the exhibit. Communication is needed between the Marketing LAN and the Sales LAN. All hosts on those LANs also need connectivity to the Internet. Which three commands will allow this communication? (Choose three).

Marketing(config)# ip route 198.18.150.0 255.255.255.0 fa0/0Marketing(config)# ip route 198.18.160.0 255.255.255.0

198.18.160.1* Marketing(config)# ip route 0.0.0.0 0.0.0.0 fa0/0* Sales(config)# ip route 192.0.2.0 255.255.255.0 fa0/0* Sales(config)# ip route 0.0.0.0 0.0.0.0 s0/0Sales(config)# ip route 0.0.0.0 0.0.0.0 198.18.160.2

21. A network administrator must configure a FastEthernet interface with an IP address. The configuration must also identify the remote site to which the interface is connected. Which set of commands will meet these requirements?

StPetersburg(config)# banner San Jose T1 StPetersburg(config)# interface fa0/0 StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252

StPetersburg(config)# interface fa0/0 StPetersburg(config-if)# ip address 172.26.155.5 netmask 255.255.255.252 StPetersburg(config-if)# description San Jose T1

StPetersburg(config)# interface fa0/0 StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252 StPetersburg(config-if)# banner remote site San Jose T1

* StPetersburg(config)# interface fa0/0 StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252 StPetersburg(config-if)# description San Jose T1

22. A network administrator issues the erase startup-config command on a configured router with the configuration register set to 0x2102 and observes the following output: Erasing the nvram filesystem will remove all files! Continue? [Confirm] [OK] Erase of nvram: complete If the router unexpectedly loses power after this sequence, what will occur when power is restored?

The router will enter ROM monitor mode upon completion of the power-on self test (POST).

The router will load the last known valid configuration file.The router will enter Rx-boot mode.* The router will prompt the user to enter setup mode or to

continue without entering setup mode.

23. The main router of XYZ company has enough flash and RAM to store multiple IOS images. An administrator wants to upload a second IOS image from a TFTP server to the flash of the router. Which method will accomplish this task?

Paste the IOS filename to the command line of the router while in global configuration mode. Press enter. Then issue the copy tftp flash command.

Use the setup utility to load the new image to flash.Copy the IOS image file from a TFTP server using the command

copy filename ip address flash .* Copy the IOS image file from a TFTP server using the command

copy tftp flash. When prompted, provide the IP address or name of the TFTP server and the IOS image filename.

24. What will occur if the command service password-encryption is entered on a router?

It will allow only the privileged mode password to be encrypted.It will set an MD5 hashing algorithm on all unencrypted

passwords.* It will apply a weak encryption to all unencrypted passwords.It will apply an MD5 hashing algorithm to encrypt the console and

Telnet passwords.

25. Which features describe a FastEthernet interface on a router? (Choose two.)

can be configured using Router(config)# interface Ethernet0* may be administratively disabled by using the shutdown

command* must be configured with a valid IP address and subnet mask in

order to forward packetshas a maximum data rate of 10 Mbpsmust be configured with the correct bandwidth to reach data rates

higher than 10 Mbps

26. What are two recommended uses of login banners? (Choose two.)* to display security warning messagesto welcome any user to the routerto warn people about misusing privileged EXEC modeto identify circuits and other devices connected to the router* to announce a scheduled system shutdown

27. Refer to the exhibit. While planning an IOS upgrade, the administrator issues the command show version. What is the current IOS boot location?

RAMNVRAMflash* ROM

28. Why are interface descriptions used in router configurations? (Choose three).

* to enable support personnel to easily identify networks and customers that may be affected by a possible interface issue

* to provide comments on the interface without affecting the router functionality

to display access warning messages before users enter the interface configuration mode

to eliminate the need to use IP addresses when using the ping and telnet commands

* to identify the purpose and location of the interface

29. What are two characteristics of the support for Telnet within Cisco IOS software? (Choose two.)

* Up to five separate Telnet lines are supported by default in standard edition IOS files.

For security purposes, Telnet sessions are required to be established from the privileged mode.

* A router can host simultaneous Telnet sessions.Once established, a Telnet session can remain operational

regardless of network status.Telnet tests wireless connectivity and does not require a physical

connection between devices to gain remote access.

30. Neither router in the graphic has a host table or DNS available. The interfaces and passwords have been correctly configured. Which of the following commands will initiate a Telnet session? (Choose two.)

ATL> connect CHIATL> telnet CHI* ATL# 192.168.4.2ATL# connect ATL* CHI# telnet 192.168.4.1CHI# telnet ATL

31. From the running-config, the following configuration entries are displayed: Router(config)# line vty 0 2 Router(config-line)# password g8k33pr Router(config-line)# login What can be interpreted from the exhibited configuration? (Choose two.)

* Three Telnet lines are available for remote access.Two Telnet lines are available for remote access.Future configuration of the remaining Telnet lines will require the

password to be set to g8k33pr.To login to the remote device, g8k33pr will be used as the Telnet

and secret password.* Remote access to this local router will require a Telnet password

of g8k33pr.

32. Which two conclusions can be validly derived from the set of commands shown in the exhibit? (Choose two.)

Host 10.128.114.76 will be able to establish a Telnet session with host 172.25.0.26

* Host 10.128.114.76 will not be able to establish an FTP session with available hosts on the 172.25.0.0 network.

Host 192.168.85.76 will be able to establish a Telnet session with host 172.25.0.26.

* Host 192.168.85.76 will be able to establish an FTP session with available hosts on the 172.25.0.0 network.

Host 172.25.0.26 will not be able to establish a Telnet session with available hosts on the 192.168.85.0 network.

No host will be able to access IP services on the 10.128.114.0 network.

33. The following access list has been correctly applied to a router interface: access-list 52 deny 172.30.65.52access-list 52 permit any Which of the following statements are true about this ACL? (Choose three.)

This is an invalid ACL because the wildcard mask is missing from the command.

* A wildcard mask of 0.0.0.0 is assumed for 172.30.65.52.This is an extended IP access list.

* All traffic from 172.30.65.51 will be permitted.* This is a standard IP access list.

34. access-list 199 deny tcp 198.18.0.0 0.0.255.255 any eq 25 access-list 199 permit ip any any Assuming this ACL is correctly applied to a router interface, which statements describe traffic on the network? (Choose two.)

HTTP and FTP traffic from hosts on 198.18.0.0 will be denied.Telnet traffic destined for hosts on network 198.18.0.0 will be

denied.* SMTP traffic from hosts on network 198.18.0.0 will be denied.* SMTP and HTTP traffic to hosts on the 198.18.0.0 network is

permitted.Telnet traffic from any hosts to any host on network 198.18.0.0

will be denied.

35. Refer to the graphic. Which command will create a standard ACL that will apply to outbound traffic on interface Fa0/0 of router A and will deny IP traffic from any host on network 172.16.34.0/24 that is destined for network 192.168.5.0/24 while allowing all other IP traffic?

access-list 2 deny 172.16.34.0 0.0.0.0access-list 2 permit any* access-list 33 deny 172.16.34.0 0.0.0.255access-list 33 permit

anyaccess-list 42 deny 172.16.34.0access-list 42 permit anyaccess-list 56 deny tcp 172.16.34.0access-list 56 permit ip any

36. Refer to the exhibit. Router C interface E0 has gone down. What is the maximum time that will elapse before Router A learns that network 110.90.1.0 is down?

* 5 seconds13 seconds17 seconds25 seconds30 seconds90 seconds

37. Refer to the exhibit. Which set of commands will configure static routes that will allow the WinterPark and the Altamonte routers to deliver packets from each LAN and direct all other traffic to the Internet?

* WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/1

WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte(config)# ip route 198.18.222.0 255.255.255.255 s0/1

WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1 WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2

WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1 Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/0

38. Which ACL can be applied in the outbound direction of Serial 0/0 on router B in the graphic to allow all IP traffic from LAN A to the Internet, allow Web traffic from LAN B to the Internet, and deny all other traffic to the Internet?

access-list 98 permit 192.168.2.0 0.0.0.255 any access-list 98 permit tcp 10.90.3.0 0.0.0.255 any eq www

* access-list 125 permit ip 192.168.2.0 0.0.0.255 any access-list 125 permit tcp 10.90.3.0 0.0.0.255 any eq www

access-list 132 permit ip 192.168.2.0 0.0.0.255 any access-list 132 permit tcp 10.90.3.0 0.0.0.255 any eq www access-list 132 permit ip any any

access-list 156 permit ip 192.168.2.0 0.0.0.255 any access-list 156 permit ip 10.90.3.0 0.0.0.255 any eq www

39. What will occur when the following ACL is applied inbound to both FastEthernet interfaces of the Anaheim Router shown in the exhibit? access-list 166 permit icmp 10.128.114.0 0.0.0.255 10.97.88.0 0.0.0.255 echo access-list 166 permit icmp 10.97.88.0 0.0.0.255 10.128.114.0 0.0.0.255 echo access-list 166 permit tcp 10.128.114.0 0.0.0.255 any eq www

The ACL will deny all traffic because of the implied deny ip any any statement at the end of the ACL.

The ACL will have no effect because it should be applied in the outbound direction on the FastEthernet interfaces.

The Finance Admin host and the HR Admin host will be able to ping to each other. All other traffic will be denied.

* The Finance Admin host and the HR Admin host will be able to ping to each other. The HR Admin host will be allowed to access Web servers on the Internet, while the Finance Admin host will be denied Internet Web access.

40. What are two possible reasons a router would not load a valid IOS from flash? (Choose two.)

The configuration register is set to 0x2142.* The first boot system command executed in the startup

configuration file is boot system rom.* The configuration register is set to 0x2100.The boot field is set to the hexadecimal number 2.The startup configuration file is missing or corrupt.

41. Refer to the graphic. A network administrator has a console connection to Router A. Pings to Router B are successful, but pings to Routers C and D fail. What is the first step in troubleshooting the problem?

Use the show cdp neighbors detail command from router A to gather information about all Cisco routers in the network.

Use the traceroute command to discover exactly which link in the network is down.

Use an extended ping from router A to each router in the network.* Use the show interfaces command from a Telnet session on

router B to check the connection to router C.

42. What are three features of CDP? (Choose three.)

* provides information on directly connected devices that have CDP enabled

* tests Layer 2 connectivity* enabled by default on each interfaceprovides a layer of securityused for debugging Layer 4 connectivity issues

43. Which two steps describe how to create a functional physical connection between a router console and a terminal? (Choose two.)

Use a crossover cable to connect the terminal serial port to the router console port.

Use a rollover cable to connect the terminal NIC to the router console port.

* Use an RJ-45 to DB-9 adapter on the terminal serial port to connect to the cable going to the router console.

Use a transceiver to connect a straight-through cable to the router console port.

Use a straight-through cable to connect the router console port to the terminal NIC.

* Use a rollover cable to connect from a terminal serial port to the router console port.

44. Based on this partial output of the show ip route command, which routing protocol is configured on the router? R 172.16.3.0/24 [120/3] via 172.16.2.2, 00:00:27, Serial0/0

* RIPEIGRPOSPFIGPBGP

45. Which of the following statements are true regarding routed protocols? (Choose two.)

* They provide enough information in the Layer 3 address to allow a packet to be forwarded from one network to another.

* They carry user data between networks.They allow routers to share information about networks and their

proximity to each other.They are used by routers to maintain routing tables.RIP and IGRP are routed protocols.

46. What two facts can be determined from the output shown in the exhibit? (Choose two.)

* The version for this IOS file is 12.1 release 5.The file format for this IOS version is T12.The expression mz indicates whether the file is relocatable.* This image could be used on a 2621 or a 2620 with enough

RAM.The number 121 indicates that this version of the software has been

updated 121 times.

47. Which commands will show the status and IP address of all interfaces on a router? (Choose two.)

* show protocolsshow ip protocolsshow version* show interfacesshow ip ports

48. A network administrator issues the command show ip route and sees this line of output: 192.168.3.0/24 [120/2] via 192.168.2.2, 00:00:05, Serial0/0 What two pieces of information can be obtained from the output? (Choose two.)

* RIP is the routing protocol configured.This is a static route to network 192.168.3.0.* The metric for this route is 2.The next periodic update is in 5 seconds.The autonomous system number is 120.

Practice

1. Which of the following are functions of a router? (Choose three.) * packet switching extension of network segments * segmentation of local area networks * selection of best path based on a logical addressing selection of best path based on a physical addressing

2. What types of messages are sent periodically by devices configured for CDP? probes beacons signals * advertisements routing updates unicast

3. Which command will produce the output shown in the graphic? show cdp * show cdp neighbors show cdp neighbors detail show cdp detail

4. How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS? 4 * 5

8 10

5. A network administrator can establish a remote session to a host using the Router> telnet 192.168.1.1 command but is unsuccessful when using the Router> telnet Boston command to connect to the same interface. Which of the following could be the problem? (Choose two.) * The ip host table on the router is not configured. The command telnet Boston was issued from the wrong router prompt. The routing table is missing. * Domain name services are not available.

6. If the config-register on a router is set to 0x2102, where is the first place the router will look for boot system commands? RAM ROM Flash * NVRAM

7. In the configuration register value 0x2104, which value represents the boot field setting? x 2 1 0 * 4

8. Which of the following will add a TFTP server as a fallback source for a router to load an IOS image? Router# boot system tftp 163.150.9.31 c2500-d-l.120-9Router# copy run start Router# boot system tftp c2500-d-l.120-9.bin 163.150.9.31Router# copy run start * Router# config tRouter(config)# boot system tftp c2500-d-l.120-9.bin 163.150.9.31Router(config)# exitRouter# copy run start Router# config tRouter(config)# boot system tftp 163.150.9.31 c2500-d-l.120-9.binRouter(config)# exitRouter# copy run start

9. Assume OSPF is being used on all routers. What happens when the link between Router1 and Router2 goes down? (Choose two.) Updates start broadcasting every 30 seconds. Updates start broadcasting every 90 seconds. * Link-state advertisements are flooded. Link-state advertisements are sent only to neighboring routers. * All routers note the change and adjust routes. All routers ignore the change until the route becomes active again.

10. What can be determined from the partial output of the show ip route command displayed below? (Choose two.)

R 200.200.200.0/24 [120/1] via 192.168.10.2, 00:00:14, Serial0/0C 192.168.10.0/24 is directly connected, Serial0/0

The next update will be in 76 seconds. * The next update will be in 16 seconds. * The administrative distance is 120 and the metric is 1. The metric is 120 and the administrative distance is 1. 200.200.200.0 is configured on Serial0/0. 192.168.10.2 is configured on Serial0/0.

11. Given the above topology, which of the following statements are true? (Choose two.) If RouterC receives a packet destined for 10.5.183.46, it will be forwarded out interface Serial 1. * If RouterA receives a packet destined for 192.168.3.146, it will be forwarded out interface Ethernet 0. * If RouterA receives a packet destined for 10.5.27.15, it will be forwarded out interface Serial 1. If RouterB receives a packet destined for 10.5.27.83, it will be forwarded out interface Serial 0. If RouterA receives a packet destined for 172.16.55.101, it will be forwarded out interface Serial 1.

12. Which command is used to redirect debug information to a device that is connected though a Telnet session? Router# monitor Router# terminal redirect vty 0 * Router# terminal monitor Router# monitor output vty 0

13. The following access list has been created to prevent traffic from host 204.204.7.122 from accessing the 201.100.11.0 network.

access-list 22 deny host 204.204.7.122access-list 22 permit any

Which group of commands will properly place this access list so that this host is denied access only to the 201.100.11.0 network? RouterA(config)# interface s0/0RouterA(config-if)# ip access-group 22 in RouterA(config)# interface s0/0RouterA(config-if)# ip access-group 22 out RouterA(config)# interface fa0/0RouterA(config-if)# ip access-group 22 in RouterB(config)# interface fa0/0RouterB(config-if)# ip access-group 22 in RouterB(config)# interface s0/0RouterB(config-if)# ip access-group 22 in * RouterB(config)# interface fa0/0RouterB(config-if)# ip access-group 22 out

14. Refer to the output from the show ip route command. What can be concluded from the output of this router command? A preferred route to the destination has not been set. * There are two equal cost paths to network 1.0.0.0. Both interfaces are being used equally to route traffic. A variance must be set to load-balance across multiple paths.

15. Of the eight network users on the Human Resources department LAN, one cannot connect to the file server. The user's PC has successfully booted but can not see the network. What should be checked first? the PC power cord the file server * the PC network interface card LEDs the LAN switch in the wiring closet the configuration of the router interface attached to the LAN

16. What are the major characteristics of a wide area network? (Choose three.) * connect devices separated by wide geographical areas includes technologies of FDDI and Ethernet * uses serial connections to access bandwidth * common carriers are needed for connections type of connection between a router and a switch

17. Which of the following WAN connection services typically use synchronous communications? (Choose two.) circuit-switched * leased line * packet-switched Ethernet analog modem services

18. Which of the following are true regarding the setup configuration mode? (Choose three.) To abort the setup mode, use the CTRL+SHIFT+6 keys. * To abort the setup mode, use the CTRL+C keys. Setup mode allows a complete configuration of the router. * To enter setup mode, use the privileged mode setup command. A router that does not find a valid IOS during the boot process will start the system configuration dialog. * A router that does not find a valid configuration file during the boot process will start the system configuration dialog.

19. Host name resolution allows for the use of an alphanumeric name to identify network devices. Select the answer that displays the correct configuration syntax for creating a host name. Router# ip host Fontana 200.100.50.5 * Router(config)# ip host Fontana 200.100.50.5 Router(config-if)# ip host Fontana 200.100.50.5 Router(config)# ip host Fontana 200.100.50.5/24

20. Which statements are true regarding VTY passwords? (Choose two.) VTY passwords must be encrypted. * All VTY lines do not need to use the same password. * A VTY password is required to establish telnet sessions. The VTY password is set with the command line console 0. The VTY password must be identical with the enable secret password.

21. Which of the following would cause the "Message Of The Day" banner to appear? (Choose three.) * telnetting into the router initiating a debug session configuring a router for the first time * using the Aux port to check the current configuration * using the console port to check the current configuration

22. The following IGRP configuration was typed in for RouterB:

RouterB(config)# router igrp 100RouterB(config-router)# network 192.168.2.0RouterB(config-router)# network 192.169.3.0

After several update periods, a technician notices that RouterB is not receiving updates from all routers shown in the diagram. Which of the following would correct this error? RouterB(config)# router igrp RouterB(config-router)# no network 192.169.3.0 RouterB(config)# router igrp 46RouterB(config)# no network 192.169.3.0RouterB(config)# network 192.168.3.0 RouterB(config)# router igrp 100RouterB(config-router)# network 192.169.3.0RouterB(config-router)# no network 192.168.3.0 * RouterB(config)# router igrp 100RouterB(config-router)# no network 192.169.3.0RouterB(config-router)# network 192.168.3.0

23. The administrator knows that port E0 on router B connects to a small LAN without any routers. Which command can be executed on router B to conserve bandwidth on port E0? no update timers holdown-timer 96 poison reverse E0 * passive-interface E0 no triggered updates

24. Refer to the above graphic. When using RIP as the routing protocol, how would Chicago use load balancing to route packets to New York? (Choose two.) * by forwarding packets over paths of equal cost by forwarding packets according to hop count and speed of the link by determining which interface has the least traffic and sending to it first by first determining the speed of the links and then cycling packets through the fastest links first * by cycling packets through interfaces and routes following the same pattern (Router 1, 2, 3) each time

25. The following line was displayed in the output of the show ip route command.

I 192.168.3.0/24 [100/80135] via 192.168.2.2, 00:00:30, Serial0/0

What is the value of the composite metric? 8 24 80 100 135 * 80135

26. Which of the following are necessary for basic network communication to occur between hosts that will run such applications as Telnet, web browsers, and e-mail? (Choose three.) * TCP/IP must be installed and properly configured on each device. Multiple subnets must be configured on the router to ensure accurate delivery. * A default gateway must be configured for datagrams to travel outside of the LAN. The hosts must be directly connected to a switch to travel outside of the LAN. * To ensure accurate delivery, a router must be configured and accessible by hosts on the network.

27. The internetwork needs to communicate between the hosts connected to the E0 interface of the Utah router and hosts connected to the E0 interface of the Idaho router. The hosts should also have connectivity to the Internet. Which commands must be configured in order to enable this communication? (Choose three.) * Idaho(config)# ip route 172.31.1.0 255.255.255.0 172.31.2.1 * Idaho(config)# ip route 0.0.0.0 0.0.0.0 s0 Idaho(config)# ip route 172.31.2.0 255.255.255.0 172.31.2.2 Utah(config)# ip route 172.31.3.0 255.255.255.0 172.31.2.1 Utah(config)# ip route 172.31.3.0 255.255.255.0 s1 * Utah(config)# ip route 0.0.0.0 0.0.0.0 s0

28. A network administrator needs to configure a routing protocol that will use bandwidth and delay when making routing decisions. Which of the following commands must be configured on Router2 so those metric values will be used when determining the best path?(Choose two.) Router2(config)# router rip * Router2(config)# router igrp 200 Router2(config-router)# network 192.5.5.0 Router2(config-router)# network 201.100.11.0 * Router2(config-router)# network 192.5.5.0Router2(config-router)# network 201.100.11.0 Router2(config-router)# network 192.5.5.0 201.100.11.0

29. Which of the following are characteristics of the Open Shortest Path First (OSPF) routing protocol? (Choose two.)

* functions as a link-state routing protocol discards packets when the hop count is greater than 15 calculates the shortest path to a destination using the Diffused Update Algorithm (DUAL) created as a proprietary routing protocol * floods updates as topology changes occur broadcasts routing updates every 90 seconds or as triggered by topology changes

30. The commands shown in the graphic were entered to alter the startup sequence of the router. On the next reload, which IOS will be loaded? The router will load c2500-js-l.112-26d. The router will load c2500-d-l.120-9. The router will load the IOS from ROM. * The router will boot into ROM monitor mode.

31. When would the ROM monitor mode be used? (Choose two.) maintaining routing configuration settings * modifying the IOS image stored in Flash running a limited IOS feature set * performing the bootstrap process

32. An administrator has made routing protocol changes to a router's configuration. To ensure that the changes are implemented, the active configuration is saved and the router is reloaded. After the router has initialized, the output on the screen displays "Would you like to enter the initial configuration dialog?[yes/no]:" Why did this dialog appear? There was a POST failure. The incorrect IOS loaded. There was an error in the startup configuration file. * The configuration register was set to ignore NVRAM.

33. Which of the following are valid static IP routes? (Choose three.) RouterB(config)# ip route 192.168.5.0 255.255.255.0 S1 * RouterC(config)# ip route 192.168.1.0 255.255.255.0 S1 * RouterA(config)# ip route 192.168.3.0 255.255.255.0 192.168.2.2 RouterB(config)# ip route 192.168.1.0 255.255.255.0 192.168.2.2 * RouterC(config)# ip route 192.168.2.0 255.255.255.0 192.168.4.1 RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.2.1

34. After issuing the show interfaces command, a technician notices the line "Serial1 is down, line protocol is down" in the output. Which of the following are possible reasons for this message output? (Choose three.) There is a mismatch in the encapsulation type on both ends of the link. * A Layer 1 issue exists. * An interface problem exists. The clockrate was not set during configuration. * There is no usable media for the protocol. Keepalive messages are not being sent.

35. When must a router serial interface be configured with the clock rate command? when the interface is functioning as a DTE device when the interface timers have been cleared when the connected DTE device is shut down * when the interface is functioning as a DCE device

36. Which statement about datagram life is true? Each router increments the TTL value of the datagram until the maximum hop count of the routing protocol is reached. The packet is then returned to the source. The packet is dropped when the router count and the TTL value match. The source is notified that transmission has failed. * Each router decreases the TTL value by one until it reaches zero. The datagram is then discarded and a time exceeded for message is sent to the source. The destination device discards the datagram if the TTL value is zero on arrival. An ICMP destination unreachable message is sent back to the source.

37. Router B received an interface configuration change. Suddenly, it transmits a new update. Which of the following could have triggered this update? (Choose two.) * Router B received a configuration change. Router A sent a message requesting an update. * Router C came online after Router B sent the RIP update. Router B received an error message indicating the last update was not received.

38. Why is it useful to have an interface description? A user can telnet to the router using the interface description. The interface description is a shortcut way to edit the running-config. * The interface description helps identify distant network connections. The interface will remain inactive until an interface description is applied.

39. ACL statements operate in sequential, logical order. If a condition match is true, the rest of the ACL statements are not checked. If all of the ACL statements are unmatched, what happens to the packet? The packets will be placed in a buffer and forwarded when the ACL is removed. The packets will be sent to the source with an error notification message.

The implicit permit any statement placed at the end of the list will allow the packets to flow through uninhibited. * The implicit deny any statement placed at the end of the list will cause the packets to be dropped.

40. Why would an administrator use the Telnet application when troubleshooting a network? (Choose three.) * It can be used to verify the operation of application layer software between the source and destination. Telnet can use the ICMP protocol to verify a hardware connection and network layer address. * It is the most complete testing mechanism available. * Remote networks may be accessed via a Telnet session for troubleshooting. Time to Live values are used by Telnet to identify a failure of device between source and destination.

41. Which of the following are true statements about creating and applying access lists? (Choose three.) Access list entries should filter in the order from general to specific. * One access list per port per protocol per direction is permitted. Standard ACLs should be applied closest to the source while extended ACLs should be applied closest to the destination. * There is an implicit deny at the end of all access lists. * Statements are processed sequentially from top to bottom until a match is found. The inbound keyword refers to traffic entering the network from the router interface where the ACL is applied. 42. A network administrator trying to deny Telnet traffic from the 192.5.5.0 network to the 201.100.11.0 network entered the commands shown in the graphic. When monitoring the network, the administrator noticed that Telnet packets were still passing between those networks. What is the cause? The router ignored this type of traffic because it required a standard access list to be configured instead of an extended one. The wrong port was configured for the ACL so Telnet traffic was still allowed. * The access list has not been assigned to an interface. The permit ip any any allowed all traffic to pass regardless of the other statements listed in this ACL.

43. The routers shown in the graphic are running IGRP and sending updates about all of their networks. After the network has converged, a packet traveling to Router 4 from Router 2 will take which route based on the lowest metric? Router2 to Router1 to Router4 * Router2 to Router3 to Router4 Router2 to Router4 Router1 to Router4

44. Which of the following are true regarding route metrics? (Choose three.) * The more factors that make up a metric, the greater the flexibility to tailor network operations. The larger the metric number, the better the path. Routing protocols use metrics to send routing updates to directly connected neighbors. * Load and reliability are dynamic metrics used by IGRP. Bandwidth and delay are static metrics used by RIP v1. * Ticks, delay and cost are metrics used by routing protocols.

45. Refer to the network graphic. A packet needs to travel from Router F to Router A. Which path would be selected by the RIP routing protocol if the default metrics are used? F, G, E, D, B, A F, E, D, C, A * F, E, D, A F, E, D, B, A

46. Refer to the network and routing table entries shown in the graphic. What will happen when a packet destined for network 192.66.7.0 is received by Router A? It will be forwarded through interface S1. It will be forwarded to the default route. It will be directed toward the Internet. * It will be discarded.

47. The network shown in the graphic is using RIP as the routing protocol. Which of the following are true regarding the network discovery process that will occur for this network? (Choose three.) * The Palm Beach router will show networks 192.168.7.0 and 192.168.8.0 as directly connected networks. All of the routers will have direct knowledge of the exact topology of the entire network. * The Key West router will forward routing table information to the Miami and Palm Beach routers. The Miami router will learn about network 192.168.1.0 from the Key West router. * If network 192.168.4.0 becomes unavailable, the Key West router will notify the other routers of this fact in the next update.

48. Which of the following is the correct flow of routines for a router startup? * load bootstrap, load IOS, apply configuration load bootstrap, apply configuration, load IOS

load IOS, load bootstrap, apply configuration, check hardware check hardware, apply configuration, load bootstrap, load IOS

skill review

1. Refer to the exhibit. Which IP addresses could be assigned to the hosts in the diagram? (Choose two.)

192.168.65.31192.168.65.32* 192.168.65.35* 192.168.65.60192.168.65.63192.168.65.64

2. Which address represents the dotted decimal equivalent of the binary address 10101101.00101011.11001001.00000011?

169.35.200.2169.43.201.3173.35.201.2* 173.43.201.3175.13.193.2175.43.193.3

3. What is the result of a router ANDing the IP address and subnet mask of 172.16.115.73/20?

172.16.0.0172.16.96.0* 172.16.112.0172.16.115.0

4. What is the broadcast address for a host address of 172.16.31.99/21?172.16.255.255* 172.16.31.255172.16.31.103172.16.24.255172.16.24.111

5. What is the network address for the host 192.168.32.52 255.255.255.240?192.168.32.0192.168.32.32* 192.168.32.48192.168.32.63192.168.32.255

6. How many bits have been borrowed to subnet the address 189.13.64.45 255.255.255.248?

4512* 132021

7. Which addresses are valid for use over the Internet? (Choose three.)* 14.31.6.12127.13.64.2172.16.13.91* 182.16.44.5192.168.100.35* 220.225.225.23

8. Refer to the exhibit. A network administrator is given a single network address of 192.168.16.0 and must configure the networks in the exhibit. The routing protocol being used is RIP version 1. Which subnet mask should be used?

255.255.255.192* 255.255.255.224255.255.255.240255.255.255.248

9. A network administrator has just connected a new switch to a router with a crossover cable. The Fast Ethernet interface on the router has already been configured but there are no link lights on the router or the switch. What could the problem be?

The crossover cable is faulty and needs to be replaced with a new crossover cable.

* The wrong cable was used and needs to be replaced with a straight-through Ethernet cable.

The switch has not been configured yet and the Ethernet port is down.

The router was configured with an incorrect IP address on the Ethernet interface.

10. Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices?

Connection 1 - rollover cable Connection 2 - straight-through cable Connection 3 - crossover cable

Connection 1 - crossover cable Connection 2 - rollover cable Connection 3 - crossover cable

Connection 1 - straight-through cable Connection 2 - crossover cable Connection 3 - crossover cable

* Connection 1 - straight-through cable Connection 2 - crossover cable Connection 3 - straight-through cable

Connection 1 - crossover cable Connection 2 - straight-through cable Connection 3 - crossover cable

11. Refer to the exhibit. What type of cable connection is displayed?straight-through patch cablerollover cable* crossover cableconsole cable

12. Host A sends data to Host B, which is located on the same network segment. What action is taken by all hosts on that segment?

* The NIC in each device checks to see if its MAC address matches the destination MAC address carried by the data frame.

The NIC in each device checks to see if its MAC address matches the source MAC address carried by the data frame.

Because their MAC addresses are different, the NIC in each device checks the IP address for matches.

The NIC in each device checks to see if its IP address matches the source IP address carried by the data frame.

13. A network administrator must explain to a department manager the difference between how Layer 2 and Layer 3 devices handle data. What should the administrator tell the department manager? (Choose two.)

A Layer 2 device will decide where to send data based solely on the source MAC address.

* A Layer 2 device will decide where to send data based solely on the destination MAC address.

A Layer 2 device will decide where to send data based solely on the destination IP address.

A Layer 3 device will decide where to send data based solely on the source IP address.

* A Layer 3 device will decide where to send data based solely on the destination IP address.

A Layer 3 device will decide where to send data based solely on the destination MAC address.

14. Which task does a CSU/DSU perform?packet routingsecurity filtering* connects router serial interface to telcodials the backup WAN connection

15. Refer to the exhibit. What would be the effects of replacing the hub with a switch? (Choose two.)

* Each host will change from shared bandwidth to dedicated bandwidth.

Each host will change from dedicated bandwidth to shared bandwidth.

* The number of collision domains will increase.The number of collision domains will decrease.The number of networks will increase.The number of networks will decrease.

16. What are some of the characteristics of CAT 5 UTP cable? (Choose two.)It is difficult to terminate the cable.It is more expensive than any other type of LAN cabling.* It is a four-pair wire medium.It is not affected by EMI or RFI.* The twisted wire pairs cause a cancellation effect.

17. Which device creates both collision and broadcast domains?switchhubbridge* routerrepeater

18. How does a device on a LAN detect an error in a frame?It sends a copy of the frame back to the sender for verification.* It compares the FCS in the frame to the one that the computer

calculates from the contents of the frame.It checks the destination address to verify that the frame was really

intended for it.It sends out a jam signal to all nodes on the network.

19. HostA and HostB lack connectivity. Which option is a Layer 3 issue that could be causing the problem?

encapsulation mismatch* IP addressing and routingframing errorsbit synchronization problems

20. Refer to the exhibit. The server was just added to the network and no hosts are able to connect to it. What could be the problem?

The IP address of the server should be dynamic instead of static.The IP address assigned to the server is the network address for

this subnetwork.* The IP address assigned to the server is the broadcast address for

this subnetwork.The network is not subnetted correctly.

21. What can be learned if a ping to address 127.0.0.1 fails?The remote host located at 127.0.0.1 is not reachable.The ability to ping has been disabled on the computer.* The TCP/IP protocols are not loaded.The default gateway is not responding.

22. Host A is sending data to Host B which is located on the same network. Host A knows the IP address of Host B but does not know the MAC address. What protocol would be used by Host A to determine the MAC address of Host B?

DNSDHCPRARP* ARPSNMP

23. Host A attempts to send data to another host with a known IP address. When Host A sends an ARP request to find the MAC address of the desired

host, Host A receives in reply the MAC address of the local router interface. What can be concluded from this response?

Host A does not have the correct address for the desired host.* The desired host is located on another segment from Host A.The local router is not functioning properly.The desired host and the local router have the same IP address.

24. When a switch is powered on, it must begin to populate its bridging table. What information is added to the bridging table from incoming packets?

* source MAC address and incoming port numberdestination MAC address and incoming port numbersource IP address and incoming port numberdestination IP address and incoming port number

25. A network administrator is monitoring multiple computer labs within the LAN. Excessive broadcasts have slowed the network. The installation of what device would create a solution to the problem?

bridgehubtransceiver* routerswitch

26. A network administrator has noticed an excessive number of collisions on one subnetwork of the LAN. Which device could be added that would create a solution to the problem?

hubrouter* switchtransceiver

27. What address is used by the router to determine the best path through a network?

source MAC addressdestination MAC addresssource IP address* destination IP address

28. What are two characteristics of link-state protocols? (Choose two.)* use more bandwidth for overhead when convergingwork well for stub networks* more router memory required for tablessplit-horizon strictly followedslow to convergeimpossible to configure statically