Name________________________ Graded by__________________________

Grade_____________________________

1.

What are two load-balancing methods in the EtherChannel technology? (Choose two.)

combination of source port and IP to destination port and IP

source IP to destination IP

source port to destination port

combination of source MAC and IP to destination MAC and IP

source MAC to destination MAC

2 Which is a characteristic of EtherChannel?

EtherChannel uses physical ports that have been upgraded to provide a faster connection.

STP will not block redundant EtherChannel bundles between two switches.

STP treats all interfaces in a bundle as a single logical link.

EtherChannel configuration is applied to each physical port.

3 Which three STP states were replaced with the RSTP discarding state? (Choose three.)

Listening

Learning

Blocking

Disabled

Forwarding

4 What is the value used to determine which port on a non-root bridge will become a root port in a STP network?

the highest MAC address of all the ports in the switch

the lowest MAC address of all the ports in the switch

the VTP revision number

the path cost

5 If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

lowest IP address

lowest MAC address

highest IP address

highest MAC address

6

Refer to the exhibit. Users on the R1 LAN and R2 LAN are unable to communicate. Based on the IPv6 addressing of the network displayed, what is the problem?

R1 has a link-local address conflict with interfaces Gi0/0 and S0/0/1.

The serial interfaces on R1 and R2 are on different subnets.

A link-local and global unicast address cannot both be configured on an interface.

The LAN interfaces on R1 and R2 are on the same subnet.

7 An administrator wants to replace the configuration file on a Cisco router by loading a new configuration file from a TFTP server. What two things does the administrator need to know before performing this task? (Choose two.)

router IP address

TFTP server IP address

name of the configuration file that is currently stored on the router

name of the configuration file that is stored on the TFTP server

configuration register value

8

Refer to the exhibit. A network engineer is preparing to upgrade the IOS system image on a

Cisco 2901 router. Based on the output shown, how much space is available for the new image?

25574400 bytes

249856000 bytes

221896413 bytes

33591768 bytes

9

Refer to the exhibit. Based on this configuration, which two OSPF router roles are assumed by R2? (Choose two.)

backbone router

internal router

designated router

area border router

autonomous system boundary router

10 What are the only two roles that permit an OSPF router to be configured for summarization? (Choose two.)

backbone router

internal router

designated router

area border router

autonomous system boundary router

11

Refer to the exhibit. Which address will R1 use as the source address for all OSPFv3 messages that will be sent to neighbors?

FE80::1

2001:DB8:ACAD:A::1

FF02::1

FF02::5

12 When OSPFv2 neighbors are establishing adjacencies, in which state do they elect a DR and BDR router?

Exchange state

Init state

Two-Way state

Loading state

13 A network administrator has just changed the router ID on a router that is working in an OSPFv2 environment. What should the administrator do to reset the adjacencies and use the new router ID?

Configure the network statements.

Change the interface priority.

Issue the clear ip ospf process privileged mode command.

Change the OSPFv2 process ID.

14

Refer to the exhibit. All the routers that are displayed are part of the EIGRP domain. Assuming EIGRP metric weights are not altered in the configurations, which path will a packet take that originates from a host on the 192.168.1.0/24 network and is going to a host on the 192.168.2.0/24 network?

R1, R4, R3

R1, R5, R3

R1, R2, R3

R1, R2, R5, R3

15

Refer to the exhibit. A network administrator is configuring EIGRP AS 20 on Router_2 and has received the error that is shown. What is the cause of the error?

The autonomous system (AS) number is not the same as the number on other routers in this network.

The IPv6 routing process cannot be implemented until IPv6 routing is enabled.

The EIGRPv6 interface configuration is incomplete.

The passive-interface default command has been implemented for EIGRPv6.

16 When a link failure occurs on a network running EIGRP, how does DUAL determine a replacement route to a destination router?

DUAL examines the neighbor table to find the closest adjacency.

DUAL examines the routing table to find a feasible successor route.

DUAL examines the topology table to find a feasible successor route.

DUAL immediately sends queries to neighboring routers to build a new routing table.

17

Refer to the exhibit. Router R2 has recently been configured and connected via interface Gigabit Ethernet 0/0 to router R1. R1 is configured correctly, but fails to establish a neighbor relationship with R2. What is the problem?

The command ipv6 unicast-routing should be implemented in the router configuration mode.

The command ipv6 unicast-routing has not been implemented.

The EIGRPv6 process has not been activated on interface Gigabit Ethernet 0/0.

The passive-interface command is preventing hello packets from being sent.

18 Which two aspects of the configuration of EIGRP for IPv6 differ from its configuration for IPv4? (Choose two.)

For IPv6 no router ID is required for the EIGRP routing process to start.

No network command is needed to enable EIGRP for IPv6.

IPv6 requires a global unicast address on EIGRP interfaces.

For IPv6, the autonomous system values on routers in a domain running EIGRP do not have to match.

EIGRP on IPv6 is configured directly on router interfaces.

19 Which EIGRP route would have the preferred administrative distance?

a summary route

an internal route

an external route that is redistributed from RIP

an external route that is redistributed from OSPF

20 Refer to the exhibit. Which two networks contain feasible successors? (Choose two.)

192.168.71.0

192.168.51.0

10.44.100.252

10.44.104.253

10.44.101.252

21

Refer to the exhibit. A network engineer is troubleshooting host connectivity on a LAN that uses a first hop redundancy protocol. Which IPv4 gateway address should be configured on the host?

192.168.2.0

192.168.2.1

192.168.2.2

192.168.2.100

22

Refer to the exhibit. What protocol can be configured on gateway routers R1 and R2 that will allow traffic from the internal LAN to be load balanced across the two gateways to the Internet?

STP

PVST

PVST+

GLBP

23

to the exhibit. An administrator is examining the message in a syslog server. What can be determined from the message?

This is a notification message for a normal but significant condition.

This is an alert message for which immediate action is needed.

This is an error message for which warning conditions exist.

This is an error message indicating the system is unusable.

24 Which management protocol can be used securely with Cisco devices to retrieve or write to variables in a MIB?

SNMP version 1

SNMP version 2

SNMP version 2c

SNMP version 3

25

Refer to the exhibit. A network technician has added router R0 to an existing network that contains router R1. R0 is configured with EIGRP and is connected to R1 via the Fa0/0 interface of each router. After completing an analysis of the network, the technician notices that the routes to the networks that are supported by routers R0 and R1 are not being exchanged. What is a possible cause for this failure?

R0 was configured with the wrong autonomous system number.

FastEthernet interfaces on R0 are in a shutdown state.

Interface Fa0/0 on R0 is configured as a passive interface.

Interface Fa0/0 on R1 is configured as a passive interface.

26 A network administrator is troubleshooting router RA in an EIGRP autonomous system. The administrator needs to obtain the IP addresses of the other routers with which router RA has established adjacencies. It is also important to obtain information of the queue counts on the neighbor routers. What command will do this?

show ip eigrp interfaces

show ip eigrp neighbors

show cdp neighbor details

show ip eigrp topology all-links

27 What is the most likely cause when the output of the show interface command shows that a switch interface is up but the line protocol is down?

A cable is not attached to the interface.

An incorrect default gateway has been configured.

An encapsulation type mismatch exists.

An incorrect cable type has been attached to the interface.

28

Refer to the exhibit. Inter-VLAN communication between VLAN 10, VLAN 20, and VLAN 30 is not successful. What is the problem?

The access interfaces do not have IP addresses and each should be configured with an IP address.

The switch interface FastEthernet0/1 is configured as an access interface and should be configured as a trunk interface.

The switch interface FastEthernet0/1 is configured to not negotiate and should be configured to negotiate.

The switch interfaces FastEthernet0/2, FastEthernet0/3, and FastEthernet0/4 are configured to not negotiate and should be configured to negotiate.

29 What two encryption algorithms are used in IPsec VPNs? (Choose two.)

DH

PSK

IKE

AES

3DES

30 The output of the show ip interface brief command indicates that Serial0 is up but the line protocol is down. What are two possible causes for the line protocol being in the down state? (Choose two.)

The clock rate is not set on the DTE.

An incorrect default gateway is set on the router.

A network is missing from the routing protocol configuration.

The encapsulation on the Serial0 interface is incorrect.

Keepalives are not being sent by the remote device.

31

Fill in the blank. A spanning-tree network that has all of the switched ports in either a blocking or forwarding state is considered

a network.

32. At which layer of the OSI model is RSTP used to prevent loops? A. physical B. data link C. network D. transport 33. What can be done to secure the virtual terminal interfaces on a router? (Choose two.) A. Administratively shut down the interface. B. Physically secure the interface. C. Create an access list and apply it to the virtual terminal interfaces with the access-group command. D. Configure a virtual terminal password and login process. E. Enter an access list and apply it to the virtual terminal interfaces using the access-class command. 34. What are three characteristics of the OSPF routing protocol? (Choose three.) A. It converges quickly. B. OSPF is a classful routing protocol. C. It uses cost to determine the best route. D. It uses the DUAL algorithm to determine the best route. E. OSPF routers send the complete routing table to all directly attached routers. F. OSPF routers discover neighbors before exchanging routing information. 35. Which statement is true, as relates to classful or classless routing? A. Classful routing protocols send the subnet mask in routing updates. B. RIPv1 and OSPF are classless routing protocols. C. Automatic summarization at classful boundaries can cause problems on discontiguous subnets. D. EIGRP and OSPF are classful routing protocols and summarize routes by default.

36

Refer to the exhibit. A network administrator has segmented the network into two VLANs and configured Router1 for inter-VLAN routing. A test of the network, however, shows that hosts on each VLAN can only access local resources and not resources on the other VLAN. What is the most likely cause of this problem?

Switch port Fa0/1 is not trunking.

Router interface Fa0/0 is possibly down.

No routing protocol is configured on Router1.

One of the router subinterfaces is possibly down.

37 Which CLI mode allows users to access all device commands, such as those used for configuration, management, and troubleshooting?

user EXEC mode

privileged EXEC mode

global configuration mode

interface configuration mode

38 Which value determines if a switch becomes the central point of reference in the spanning tree topology?

lowest bridge ID

highest revision number

lowest numeric IP address

highest numeric MAC address

39 What VLANs are allowed across a trunk when the range of allowed VLANs is set to the default value?

only the management VLAN

all VLANs except the extended range VLANs

all VLANs except 1 and 1002-1005

all VLANs

40 In which mode is a VTP switch operating if it does not allow for the creation of local VLANs but it does accept VLAN updates from other switches in the same domain?

client

root

server

transparent

41

Refer to the exhibit. Each switch is

configured to participate in STP for VLANs 1, 10, 20, and 30. Which switch will become the root for VLAN 20?

A

B

C

D

42 Why is MAC address filtering considered a poor choice in securing a WLAN?

Available bandwidth is reduced.

MAC addresses are easily spoofed.

APs are more susceptible to DoS attacks.

The payload encryption is easily broken.

43 Which type of traffic can still be received on a switch interface that is in STP blocking mode?

BPDU frames

multicast frames

broadcast frames

Layer 3 packets

44 A network administrator is instructing a technician on best practices for applying ACLs. Which suggestion should the administrator provide?

Named ACLs are less efficient than numbered ACLs.

Standard ACLs should be applied closest to the core layer.

ACLs applied to outbound interfaces are the most efficient.

Extended ACLs should be applied closest to the source that is specified by the ACL.

45 What effect would the Router1(config-ext-nacl)# permit tcp 172.16.4.0 0.0.0.255 any eq www command have when implemented inbound on the f0/0 interface?

All TCP traffic is permitted, and all other traffic is denied.

The command is rejected by the router because it is incomplete.

All traffic from 172.16.4.0/24 is permitted anywhere on any port.

Traffic originating from 172.16.4.0/24 is permitted to all TCP port 80 destinations.

46

Refer to the exhibit. Router1 is not able to communicate with its peer that is connected to this interface. Based on the output as shown, what is the most likely cause?

interface reset

unplugged cable

improper LMI type

PPP negotiation failure

47 What will be the result of adding the command ip dhcp excluded-address 192.168.24.1 192.168.24.5 to the configuration of a local router that has been configured as a DHCP server?

Traffic that is destined for 192.168.24.1 and 192.168.24.5 will be dropped by the router.

Traffic will not be routed from clients with addresses between 192.168.24.1 and 192.168.24.5.

The DHCP server will not issue the addresses ranging from 192.168.24.1 to 192.168.24.5.

The router will ignore all traffic that comes from the DHCP servers with addresses 192.168.24.1 and 192.168.24.5.

48 Which important piece of troubleshooting information can be discovered about a serial interface using the show controllers command?

queuing strategy

serial cable type

interface IP address

encapsulation method

49

Refer to the exhibit. A network administrator has been asked to configure PPP with CHAP authentication over the serial link between routers R1 and R2. What additional configuration should be included on both routers to complete the task?

50 An administrator issues the command confreg 0x2142 at the rommon 1> prompt. What is the effect when this router is rebooted?

Contents in RAM will be erased.

Contents in RAM will be ignored.

Contents in NVRAM will be erased.

Contents in NVRAM will be ignored.

Bonus:

What are two WAN connection enhancements that are achieved by implementing PPPoE? (Choose two.)

Encapsulating Ethernet frames within PPP frames is an efficient use of bandwidth.

DSL CHAP features are included in PPPoE.

PPP enables the ISP to assign an IP address to the customer WAN interface.

An Ethernet link supports a number of data link protocols.

CHAP enables customer authentication and accounting.