EWAN Practice Final Exam 7.1.4 Configuring a DHCP Server1 What will be the result of adding the command ip dhcp excluded-address 172.16.4.1 172.16.4.5 to the configuration of a local router that has been configured as a DHCP server?

Traffic that is destined for 172.16.4.1 and 172.16.4.5 will be dropped by the router. Traffic will not be routed from clients with addresses between 172.16.4.1 and 172.16.4.5. The DHCP server function of the router will not issue the addresses between 172.16.4.1 and 172.16.4.5. The router will ignore all traffic that comes from the DHCP servers with addresses 172.16.4.1 and 172.16.4.5.

- Option 3

7.3.6 Routing Considerations with IPv62 An administrator is configuring a dual stack router with IPv6 and IPv4 using RIPng. The administrator receives an error message when trying to enter the IPv4 routes into RIPng. What is the cause of the problem?

RIPng is incompatible with dual-stack technology. All interfaces have been configured with the incorrect IPv4 addresses. RIPv1 or RIPv2 needs to be configured in addition to RIPng to successfully use IPv4. When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are shut down in favor of the newer technology.

- Option 3

7.1.4 Configuring a DHCP Server3 Refer to the exhibit. Which DHCP requests will R1 answer?

all DHCP requests that R1 receives requests that are broadcast to 10.0.1.255 DNS requests with a destination of 10.0.1.3 requests that are received on the FastEthernet 0/0 interface requests that come from any networks that are not listed as excluded

- Option 4

7.1.8 Troubleshooting DHCP4 Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from the DHCP server. The output of the debug ip dhcp server command shows "DHCPD: there is no address pool for 10.1.1.1". What is the problem?

The 10.1.1.1 address is already configured on Fa0/0. The default router for the 10Network pool is incorrect. The ip helper-address must be added to Fa0/0 interface. The pool of addresses for the 10Network pool is incorrect.

- Option 4

7.1.4 Configuring a DHCP Server5 

Refer to the exhibit. The hosts in network A all have static addresses that are assigned in the 192.168.2.0./24 network. The hosts in network B are DHCP clients in the 192.168.1.0/24 network. After router R1 has been configured with the statements as shown in the exhibit, the DHCP clients are reporting that they cannot access any network resources. The hosts with static addresses cannot access any resources outside network A. What is the problem?

The DHCP scope has the wrong address pool. The interfaces on R1 are incorrectly addressed. The assignable DCHP addresses are all excluded. The DCHP clients are receiving the wrong default router address.

- Option 2

7.2.2 What is NAT?6 

Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network. HostA has sent a packet to Web Server. What is the destination IP address of the return packet from Web Server when it is received at the NIC on HostA?

10.1.1.2:1234 172.30.20.1:1234 172.30.20.1:3333 192.168.1.2:80

- Option 1

2.1.3 Demarcation Point7 At what physical location does the responsibility for a WAN connection change from the service provider to the user?

DMZ local loop CSU/DSU demarcation point

- Option 4

1.2.2 WAN Physical Layer Concepts8 What three statements describe the roles of devices in a WAN? (Choose three.) 

A CSU/DSU terminates a digital local loop. A modem terminates a digital local loop. A CSU/DSU terminates an analog local loop. A modem terminates an analog local loop. A router is commonly considered a DTE device. A router is commonly considered a DCE device.

- Option 1, Option 4, and Option 5

1.2.2 WAN Physical Layer Concepts9 

Refer to the exhibit. Which statement is true about the WAN switch device? It uses a multiport internetworking device to switch traffic such as Frame Relay, ATM or X.25 over the WAN. It provides internetworking and WAN access interface ports that are used to connect to the service provider network. It provides termination for the digital signal and ensures connection integrity through error correction and line monitoring. It converts the digital signals produced by a computer into voice frequencies that can be transmitted over the analog lines of the public telephone network.

- Option 1

2.1.7 Troubleshooting a Serial Interface10 Refer to the exhibit. An administrator is trying to connect Router1, a Cisco router, to a non-Cisco router using a serial connection. Why is the connection failing?

A loopback is not set. The interface has been shut down. The wrong encapsulation is being used. Queuing cannot be used when connecting to non-Cisco devices.

- Option 3

2.1.4 DTE and DCE11 Which device encodes data for transmission across the WAN service provider transmission link?

CPE DTE DCE UART

- Option 3

2.4.5 Configuring PPP with Authentication12 

Refer to the exhibit. Why are the routers unable to establish a PPP session? The usernames are misconfigured. The IP addresses are on different subnets. The clock rate is configured on the wrong end of the link.

The CHAP passwords must be different on the two routers. Interface serial 0/0/0 on Router1 must connect to interface serial 0/0/1 on Router2.

- Option 1

2.1.7 Troubleshooting a Serial Interface13 What are the symptoms when the s0/0/0 interface on a router is attached to an operational CSU/DSU that is generating a clock signal, but the far end router on the point-to-point link has not been activated?

show controllers indicates cable type DCE V.35. show interfaces s0/0/0 indicates serial down, line protocol down. show controllers indicates cable type DCE V.35. show interfaces s0/0/0 indicates serial up, line protocol down. show controllers indicates cable type DTE V.35. show interfaces s0/0/0 indicates serial up, line protocol down. show controllers indicates cable type DTE V.35. show interfaces s0/0/0 indicates serial down, line protocol down.

- Option 3

8.4.3 Data Link Layer Troubleshooting14 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 improper LMI type encapsulation failure local cable unplugged

- Option 3

2.4.1 PPP Authentication Protocols, 2.4.3 Challenge Handshake Authentication Protocol (CHAP)15 Which protocol is used to authenticate connections over serial links securely?

CHAP HDLC SLIP PAP

- Option 1

3.1.3 Frame Relay Encapsulation16 

Refer to the exhibit. What is placed in the address field in the header of a frame that will travel from the DC office of ABC Company to the Orlando office?

MAC address of the Orlando router MAC address of the DC router 192.168.1.25 192.168.1.26 DLCI 100 DLCI 200

- Option 6

3.1.5 Frame Relay Address Mapping17 While configuring a Frame Relay connection, when should a static Frame Relay map be used?

the remote router is a non-Cisco router the local router is configured with subinterfaces broadcast traffic and multicast traffic over the PVC must be controlled globally significant rather than locally significant DLCIs are being used

- Option 3

3.1.5 Frame Relay Address Mapping18 

Refer to the exhibit. Branch A has a Cisco router and Branch B has a non-Cisco router that is using IETF encapsulation . After the commands that are shown are entered, R2 and R3 fail to establish the PVC. The R2 LMI is Cisco, and the R3 LMI is ANSI. The LMI is successfully established at both locations. Why is the PVC failing?

The PVC to R3 must be point-to-point. LMI types cannot be different on each end of a PVC. A single port can only support one encapsulation type. The IETF parameter is missing from the frame-relay map ip 192.168.1.3 203 command.

- Option 4

3.3.3 Frame Relay Flow Control19 

Refer to the exhibit. Which statement is true about the status of the Frame Relay connection? The Frame Relay connection is in the process of negotiation. Only packets with control bit DE set are sent over the PVC. No data traffic traverses the link. Packets marked as FECN and BECN indicate that a congestion control mechanism is enabled on the Frame Relay PVC. The “DLCI USAGE = LOCAL” status indicates that the PVC link is not established between the interface S0/0/0.1 and the Frame Relay switch.

- Option 3

3.4.1 Configuring Frame Relay Subinterfaces

20 Refer to the exhibit. You are a network administrator who has been tasked with completing the Frame Relay topology that interconnects two remote sites. How should the point-to-point subinterfaces be configured on HQ to complete the topology?

HQ(config-subif)#frame-relay interface-dlci 103 on Serial 0/0/0.1 HQ(config-subif)#frame-relay interface-dlci 203 on Serial 0/0/0.2 HQ(config-subif)#frame-relay interface-dlci 301 on Serial 0/0/0.1  HQ(config-subif)# frame-relay interface-dlci 302 on Serial 0/0/0.2 HQ(config-subif)#frame-relay map ip 172.16.1.1 103 broadcast on Serial 0/0/0.1  HQ(config-subif)#frame-relay map ip 172.16.2.2 203 broadcast on Serial 0/0/0.2 HQ(config-subif)#frame-relay map ip 172.16.1.1 301 broadcast on Serial 0/0/0.1  HQ(config-subif)#frame-relay map ip 172.16.2.2 302 broadcast on Serial 0/0/0.2

- Option 2

3.1.5 Frame Relay Address Mapping21 A router in a Frame Relay network needs to forward a message received from a host. What two methods does the router use to identify the correct VC to forward the message?

(Choose two.)  The router forwards the frame to all ports in the network and learns the address from the reply frame. The destination host IP address is embedded in the DLCI. The router searches Inverse ARP tables for maps of DLCIs to IP addresses. A table of static mappings can be searched. The router broadcasts a request for the required IP address.

- Option 3 and Option 4.

1.3.2 Dedicated Connection Link Options22 A company is looking for a WAN solution to connect its headquarters site with four remote sites. What advantage would dedicated leased lines provide to the customer compared to a shared Frame Relay solution?

lower cost lower latency and jitter variable bandwidth capacity fewer physical router interfaces

- Option 2

3.1.5 Frame Relay Address Mapping23 Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks?(Choose two.) 

flow control error notification congestion notification the mapping of DLCIs to network addresses the sending of keepalive packets to verify operation of the PVC

- Option 1 and Option 5.

6.2.3 DSL24 A technician is talking to a colleague at a rival company and comparing DSL transfer rates between the two companies. Both companies are in the same city, use the same service provider, and have the same rate/service plan. What is the explanation for why Company A reports higher download speeds than Company B?

Company B has a higher volume of POTS voice traffic than Company A. Company B shares the conection to the DSLAM with more clients than Company A. Company A only uses microfilters on branch locations. Company A is closer to the service provider.

- Option 4

6.3.5 VPN Tunneling25 Refer to the exhibit. A packet is being sent from Host A to Host B through the VPN tunnel between R1 and R3. When the packet first arrives at R3, what are the source and destination IP addresses of the packet?

Source 192.168.1.2 - Destination 192.168.4.2 Source 192.168.3.1 - Destination 192.168.3.2 Source 192.168.2.1 - Destination 192.168.3.2 Source 192.168.3.1 - Destination 192.168.4.2

- Option 3

6.2.3 DSL26 What are two characteristics of DSL technology?(Choose two.) 

Uploads typically offer larger transfer rates than downloads. Service providers deploy DSL in the local loop of the telephone network. DSL download rates are reduced by large volumes of POTS voice traffic. Filters and splitters allow POTS and DSL traffic to share the same medium. DSL is a shared medium that allows many users to share bandwidth available from the DSLAM.

- Option 2 and Option 4.

4.1.3 Types of Network Attacks27 What is a major characteristic of a worm?

malicious software that copies itself into other executable programs tricks users into running the infected software a set of computer instructions that lies dormant until triggered by a specific event exploits vulnerabilities with the intent of propagating itself across a network

- Option 4

4.5.3 Managing Cisco IOS Images28 Refer to the exhibit. The network administrator is adding R1 to an existing network. As a part of the corporate IT procedures, the administrator attempts to back up the router Cisco IOS software of R1 and receives the output shown. The network administrator then attempts unsuccessfully to ping the TFTP server from the console session. What should be done next to isolate this problem?

From R2, validate that interface Fa0/0 is operational. From the TFTP server, verify that the software on the TFTP server is operational. From the TFTP server, confirm there is enough room on the TFTP server for the Cisco IOS software. From the console session, make sure that R1 has a route to the network where the TFTP server resides.

- Option 4

4.4.6 Locking Down a Router with Cisco SDM29 A technician has been asked to run the Cisco SDM one-step lockdown on the router of a customer. What will be the result of this process?

The router will download the latest security patches from the specified FTP server. All security configurations that are offered by the Cisco AutoSecure feature will be automatically implemented. All traffic that enters the router is quarantined and checked against the possible security problems before being forwarded. The existing router configurations will be examined and all potential security-related configuration changes will be automatically implemented.

- Option 4

4.4.2 Configuring Your Router to Support Cisco SDM30 Refer to the exhibit. A network administrator is trying to configure a router to use SDM, but the network administrator cannot access the SDM interface of the router. What is the cause of the problem?

The VTY lines are misconfigured. The HTTP timeout policy is misconfigured. The authentication method is misconfigured. The username and password are misconfigured.

- Option 1

4.1.6 The Enterprise Security Policy31 Which three statements accurately describe attributes of a security policy? (Choose three.) 

It creates a basis for legal action if necessary. It should not be altered once it is implemented. It defines a process for managing security violations. It focuses primarily on threats from outside of the organization. It defines acceptable and unacceptable use of network resources. It provides step-by-step procedures to harden routers and other network devices.

- Option 1, Option 3, and Option 5.

4.5.4 Backing up and Upgrading Software Image32 Where will a router operating system image be copied after the copy flash: tftp command is issued?

flash DRAM NVRAM

remote server- Option 4

4.2.4 Securing Remote Administrative Access to Routers33 When configuring remote access to a router, what is the significance of the no password command on a VTY line?

Logins are prevented on that line. No password is required to log in to that line. The remote user is not allowed to change the password for that line. The remote user is prompted to change the line password after connecting to the router.

- Option 1

5.3.4 Creating Named Extended ACLs34 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.

- Option 4

5.2.3 ACL Wildcard Masking35 Which statement is true about wildcard masks?

Inverting the subnet mask will always create the wildcard mask. A wildcard mask identifies a network or subnet bit by using a "1". The same function is performed by both a wildcard mask and a subnet mask. When a "0" is encountered in a wildcard mask, the IP address bit must be checked.

- Option 4

5.2.8 Editing Named ACLs36 

Refer to the exhibit. An ACL called Managers already exists on this router. What happens if the network administrator issues the commands as shown in the exhibit?

The new ACL overwrites the existing ACL. The network administrator will receive an error message. The existing ACL is modified to include the new command. A second Managers ACL is created that contains only the new command.

- Option 3

5.1.8 Where to Place ACLs37 Refer to the exhibit. The network administrator creates a standard access control list on Router1 to prohibit traffic from the 172.16.1.0/24 network from reaching the 172.16.2.0/24 network while still permitting Internet access for all networks. On which router interface and in which direction should it be applied?

interface Fa0/0, inbound interface Fa0/0, outbound interface Fa0/1, inbound interface Fa0/1, outbound

- Option 4

8.4.5 Transport Layer Troubleshooting38 Refer to the exhibit. The SSH connections between the remote user and the server are failing. The correct configuration of NAT has been verified. What is the most likely cause of the problem?

SSH is unable to pass through NAT. There are incorrect access control list entries. The access list has the incorrect port number for SSH. The ip helper command is required on S0/0/0 to allow inbound connections.

- Option 2

5.4.5 Troubleshooting Common ACL Errors39 Refer to the exhibit. Partial results of the show access-list and show ip interface fastethernet 0/1 commands for router R3 are shown. There are no other ACLs in effect. Host A is unable to telnet to host B. Which action will correct the problem but still restrict other traffic between the two networks?

Modify the second entry in the list to permit tcp host 192.168.10.10 any eq telnet .

Reverse the order of the TCP protocol statements in the ACL. Apply the ACL on the FastEthernet 0/0 interface. Apply the ACL in the inbound direction.

- Option 2

5.1.4 ACL Operation40 Which protocol is implicitly denied at the end of an IPv4 access list?

IP TCP UDP HTTP

- Option 1

5.4.2 Dynamic ACLs41 What type of ACL can be used to force a user to authenticate to the router before accessing a network?

standard dynamic reflexive time-based

- Option 2

5.1.4 ACL Operation42 

Refer to the exhibit. Which two statements correctly describe how Router1 processes an FTP request that enters interface S0/0/0 and is destined for an FTP server at IP address 192.168.1.5? (Choose two.) 

The packet does not match an access list condition. The router matches the incoming packet to the statement that is created from the access-list 201 permit ip any any command. The router matches the incoming packet to the statement that is created from the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command. The router matches the incoming packet to the statement that is created from the access-list 201 deny icmp 192.168.1.0 0.0.0.255 any command. The packet is allowed into Router1.

- 3 and Option 5.

8.4.6 Application Layer Troubleshooting43 An administrator is unable to receive e-mail. While troubleshooting the problem, the administrator is able to ping the local mail server IP address successfully from a remote network and can successfully resolve the mail server name to an IP address via the use of the nslookup command. At what layer of the OSI model is the problem most likely to be found?

application transport

network data link

- Option 1

8.4.4 Network Layer Troubleshooting44 

Refer to the exhibit. Router1 and Router2 each support separate areas of a data center, and are connected via a crossover cable. Resources attached to Router1 are unable to connect to resources attached to Router2. What is the likely cause?

The crossover cable is faulty. The IP addressing is incorrect. There is a Layer 2 problem with the router connection. The upper layers are experiencing an unspecified problem. One or both of the Ethernet interfaces are not working correctly.

- Option 2

8.4.4 Network Layer Troubleshooting, 8.4.6 Application Layer Troubleshooting45 While troubleshooting a problem with an e-mail server, an administrator observes that the switch port used by the server shows "up, line protocol up". The administrator cannot ping the server. At which layer of the OSI model is the problem most likely to be found?

application layer network layer data link layer physical layer

- Option 2

8.1.3 Why is Establishing a Network Baseline Important?46 A network administrator is analyzing the data from a network performance baseline. Which condition will not be indicated in the baseline data?

the IP addressing scheme of the network the most heavily used parts of the network congested areas of the network error rates in different parts of the network

- Option 1

8.4.6 Application Layer Troubleshooting47 Because of a remote-procedure call failure, a user is unable to access an NFS server. At what layer of the TCP/IP model does this problem occur?

network layer data link layer

physical layer application layer

- Option 4

8.5.2 Troubleshooting Enterprise Networks 248 

Refer to the exhibit. Routers R1 and R2 have been configured with EIGRP in the same autonomous system. Computers PC1 and PC2 are not able to ping each other. Further investigation has revealed that the route to 192.168.10.0 is missing from the routing table on R2. What is the cause of the problem?

The networks are not correctly summarized. The FastEthernet interfaces on R1 are configured as passive. The network statements on R2 are incorrectly configured. EIGRP on R1 does not recognize the 192.168.10.0 network.

- Option 2

8.5.3 Troubleshooting Enterprise Networks 349 

Refer to the exhibit. Routers R1 and R2 are both configured for single area OSPF. Users who are connected to switch S1 are unable to access database applications that run on servers that are connected to S2. The network engineer is working remotely and only has the information that is shown in the exhibit to direct initial troubleshooting efforts. Based on the exhibit, which OSI layer is the most appropriate to start with for a divide-and-conquer approach?

network layer application layer data-link layer physical layer

- Option 3

4.3.2 Securing Routing Protocols 50 

Refer to the exhibit. An administrator has added the exhibited commands to routers A and B, but no routing updates are exchanged between the two routers. Based on the information that is given, what is the likely cause of the problem?

Router A is advertising the wrong network. The authentication key strings do not match. The serial interfaces of routers A and B are not on the same network. The authentication key numbers do not match the EIGRP process number for both routers.

- Option 2

7.3.2 IPv6 Addressing  1 Which address provides an example of an IPv6 link-local address?

FE80::1324:ABCD  2001:2345:AB12:1935::FEFF  2001:1234:0000:9CA::0876/64  1234:ABCD:5678:EF00:9234:AA22:5527:FC35 

- Option 1

7.3.6 Routing Considerations with IPv6 2 While configuring a router using RIPng and dual-stack technology with IPv4 and IPv6, the administrator receives an error message when inputting IPv4 routes. What could cause the error message?

IPv4 is not compatible with RIPng  RIPng is incompatible with dual-stack technology.  The router interfaces have been configured with incorrect addresses.  When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are shut down in favor of the newer technology. 

- Option 1

7.3.7 Configuring IPv6 Addresses 3 Which statement is true about an interface that is configured with the IPv6 address command?

IPv6 traffic-forwarding is enabled on the interface.  A link-local IPv6 address is automatically configured on the interface.  A global unicast IPv6 address is dynamically configured the interface.  Any IPv4 addresses that are assigned to the interface are replaced with an IPv6 address. 

- Option 2

7.1.8 Troubleshooting DHCP 5 Refer to the exhibit. A host that is connected to Fa0/0 is unable to acquire an IP address dynamically from the DHCP server. The output of the debug ip dhcp server command shows "DHCPD: there is no address pool for 172.16.1.1". What is the problem?

The default router for the 172Network pool is incorrect.  The 172.16.1.1 address is already configured on Fa0/0.  The pool of addresses for the 172Network pool is incorrect.  The ip helper-address command should be implemented on the Fa0/0 interface. 

- Option 3

7.2.5 Configuring Dynamic NAT 6 What does an access control list determine when used with NAT on a Cisco router?

addresses that are to be translated  addresses that are assigned to a NAT pool  addresses that are allowed out of the router  addresses that are accessible from the inside network 

- Option 1

7.2.6 Configuring NAT Overload 7 A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assigned two public IP addresses to this remote office. How can the system administrator configure the router to provide Internet access to all ten users at the same time?

Configure static NAT.  Configure dynamic NAT.  Configure static NAT with overload.  Configure dynamic NAT with overload. 

- Option 4

2.1.5 HDLC Encapsulation 11 

Refer to the exhibit. A network administrator is using two routers to test a WAN connection . What can be concluded based on the output of the show running-config commands?

The WAN link is using PPP encapsulation.  The WAN link speed is faster than a T1 line.  The router R2 serves as the DCE for the WAN link.  The WAN link is configured with the Cisco default encapsulation protocol. 

- Option 4

2.1.7 Troubleshooting a Serial Interface 12 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 

- Option 2

2.4.1 PPP Authentication Protocols  2.4.3 Challenge Handshake Authentication Protocol (CHAP) 13 Which combination of Layer 2 protocol and authentication should be used to establish a link between a Cisco and a non-Cisco router without sending authentication information in plain text?

HDLC with PAP  HDLC with CHAP  PPP with PAP  PPP with CHAP 

- Option 4

2.2.5 Establishing a Link with LCP 14 Which three items are LCP options that can be configured for PPP? (Choose three.) 

CHAP  Stacker  IPCP  CDPCP  Multilink 

Option 1, Option 2, and Option 5.

2.2.5 Establishing a Link with LCP 15 At what point in the PPP connection process does the authentication phase occur?

after NCP establishes Layer 3 parameters  before LCP begins the link establishment process  after the initial Configure-Request message from the link initiator  after the link initiator receives a Configure-Ack message from the responder 

- Option 4

3.2.2 Configuring Static Frame Relay Maps 17 Refer to the exhibit. What would be the result of entering the exhibited configuration on a Frame Relay router?

The local interface DLCI will be set to 102.  All traffic that is destined to 172.16.16.8 will be sent as broadcast.  Only broadcast traffic will be recieved on the Frame Relay interface. 

Routing protocol multicast updates can be forwarded across the Frame Relay PVC. - Option 4

3.3.2 Paying for Frame Relay 19 A company uses a PVC with a committed information rate (CIR) of 128 kb/s and a committed burst information rate (CBIR) of 64 kb/s. The link is used to periodically send updates at a rate of 144 kb/s. What will happen to the update traffic?

The traffic will be sent, but the company will be charged a penalty.  The traffic will be sent using the additional CBIR and will be guaranteed delivery.  The traffic will be dropped at the CO for exceeding the committed information rate.  The traffic will be sent, but the burst traffic will be marked for discard if congestion is encountered. 

- Option 4

3.1.5 Frame Relay Address Mapping 22 

Refer to the exhibit. Branch A has a Cisco router. Branch B has a non-Cisco router set for IETF encapsulation. After the commands shown are entered, R2 and R3 fail to establish the PVC. The R2 LMI is Cisco, and the R3 LMI is ANSI. The LMI is successfully established at both locations. Why is the PVC failing?

The PVC to R3 must be point-to-point.  LMI types must match on each end of a PVC.  The ietf parameter is missing from the frame-relay map ip 10.10.10.3 203 command.  The PVCs at R2 use different encapsulation types. A single port can only support one encapsulation type. 

- Option 3

3.1.5 Frame Relay Address Mapping 23 Refer to the exhibit. A technician is teaching a trainee to interpret the results of various Frame Relay troubleshooting commands. What conclusion can be drawn from the output that is shown?

Neighboring routers should use DLCI 177 to reach the Branch router.  DLCI 177 will be used to identify all broadcasts that are sent out the Branch router.  The Branch router has the address 192.168.3.1 configured for the S0/0/0 interface.  To reach 192.168.3.1, the Branch router will use the virtual circuit that is identified by DLCI 177. 

- Option 4

1.3.5 Internet Connection Options 25 Which wireless solution can provide mobile users with non line-of-sight broadband Internet access at speeds comparable to DSL or cable?

Wi-Fi  WiMAX  satellite  Metro Ethernet 

- Option 2

4.1.4 General Mitigation Techniques 

29 What is the function of an IDS? to report the attack after it happens  to stop the attack prior to its completion  to quarantine the virus or worm so as not to infect any other host  to reconfigure the security policy of a firewall to prevent another attack 

- Option 1

4.2.3 Manage Router Security 31 What will be the result of the enable secret command when added at the global configuration mode on the router?

It will use MD5 encryption to protect the privileged EXEC level access.  It will use type 7 encryption and will encrypt only the privileged EXEC level passwords.  It will use type 7 encryption to prevent all passwords that are displayed on the screen from being readable.  It will use MD5 encryption to protect the passwords that are only used in the PAP and CHAP authentication process. 

- Option 1

4.5.4 Backing up and Upgrading Software Image 32 

Refer to the exhibit. A network administrator is trying to backup the IOS software on R1 to the TFTP server. He receives the error message that is shown in the exhibit, and cannot ping the TFTP server from R1. What action can help to isolate this problem?

Check that R1 has a route to the 10.10.10.0 network.  Verify that the TFTP server software supports binary file transfers.  Make sure that the TFTP server has 192.168.1.1 as its default gateway.  Ensure that the laptop has an IP address in the 192.168.1.0/24 network. 

- Option 1

4.5.5 Recovering Software Images 33 A network technician accidentally deleted the IOS image from flash and rebooted the router. Which two options can be used to restore the IOS image? (Choose two.) 

Perform a system restore through SDM.  Download the image from a TFTP server through a network connection.  Download the image from a TFTP server through a console connection.  Establish an FTP session through an SSH connection for the image download.  Use the Xmodem protocol to download the image through a console connection. 

- Option 2 and Option 5.

5.2.5 Editing Numbered ACLs 37 Refer to the exhibit. An ACL numbered 101 already exists on this router. What happens if the network administrator issues the commands that are shown in the exhibit?

The new ACL overwrites the existing ACL.  The network administrator will receive an error message.  The existing ACL is modified to include the new commands.  A second ACL that is numbered 101 is created and contains only the new commands. 

- Option 3

5.4.4 Time-based ACLs 38 

Refer to the exhibit. What is the effect of the extended ACL when applied inbound on the S0/0/0 interface on R2?

All IP traffic will be permitted during the specified days and time range.  Both IP and Telnet traffic will be permitted during the specified days and time range.  Only Telnet traffic destined for 172.16.10.0/24 will be permitted during the specified days and time range.  Telnet traffic will be permitted only during the specified days and time range. All other network traffic will be permitted any time. 

- Option 4

5.2.3 ACL Wildcard Masking 39 Which wildcard mask would specify all IP addresses from 192.168.8.0 through 192.168.15.255?

0.0.0.7  0.0.7.255  0.0.8.255  0.0.15.255  0.0.255.255 

- Option 2

8.1.3 Why is Establishing a Network Baseline Important?41 A network administrator added two switches and a new VLAN over the past weekend. How can the administrator determine if the additions and changes improved performance and availability on the company intranet?

Perform a baseline test and compare the current values to values that were obtained in previous weeks.  Interview departmental secretaries and determine if they think load time for web pages is improved.  Compare the hit counts on the company web server for the current week to the values that were recorded from previous weeks.  Performance on the intranet can be determined by monitoring load times of company web pages from remote sites. 

- Option 1

8.3.4 WAN Topology Considerations 42 A company has its headquarters office in Dallas and five branch offices located in New York, Chicago, Los Angeles, Seattle, and Atlanta. WAN links are used for communications among offices in six sites. In planning the WAN links, the network designer is given two requirements: (1) minimize cost and (2) provide a certain level of WAN link reliability with redundant links. Which topology should the network designer recommend?

star  full mesh  hierarchical  partial mesh 

- Option 4

8.4.3 Data Link Layer Troubleshooting 45 

Refer to the exhibit. A network technician has been called in to resolve a problem with this network segment. The symptoms include a loss of connectivity throughout the network segment, high link utilization, and syslog messages that indicate constant MAC address relearning. What is the likely cause of these symptoms?

cable fault  faulty NIC card  IP addressing error  spanning tree problem  NAT configuration error 

- Option 4

8.5.3 Troubleshooting Enterprise Networks 3 46 Refer to the exhibit. The corporate network that is shown has been assigned network 172.16.128.0/19 for use at branch office LANs. VLSM is not being used. Which subnet mask will allow the most efficient utilization of IP addresses?

/21  /22  /23  /24  /25  /26 

- Option 1

8.5.3 Troubleshooting Enterprise Networks 3 47 Refer to the exhibit. Which VLAN will carry untagged traffic on FastEthernet 0/1?

VLAN 1  VLAN 2  VLAN 11  VLAN 12  VLAN 30  VLAN 999 

- Option 2

5.2.6 Creating Standard Named ACLs 48 Refer to the exhibit. In the partial router configuration that is shown, what is the purpose of access list BLOCK_XYZ?

to prevent source IP address spoofing by hosts on the Fa0/0 LAN  to block access by Fa0/0 LAN hosts to all network services beyond the router  to prevent users on the Fa0/0 LAN from opening Telnet sessions on the router  to secure Fa0/0 hosts by allowing only locally sourced traffic into the Fa0/0 LAN 

- Option 1

1. 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.

2. During the initial configuration of a router, the administrator enters the command no service config. How will the router behave as a a result of this command?

All services will be disabled. The default configuration will be restored on reboot. Automatic configuration from the network will be prevented. Services that are configured on the router will not be allowed to originate traffic.

3.

Refer to the exhibit. A network administrator is creating a prototype to verify the new WAN design. However, the communication between the two routers cannot be established. Based on the output of the commands, what can be done to solve the problem?

Replace the serial cable . Replace the WIC on RA. Configure RA with a clock rate command. Issue a no shutdown interface command on RB.

4. Which IEEE 802.16 broadband wireless technology allows users to connect to the ISP at speeds comparable to DSL and cable?

Wi-Fi satellite WiMAX Metro Ethernet

5. What functionality do access control lists provide when implementing dynamic NAT on a Cisco router? defines which addresses can be translated defines which addresses are assigned to a NAT pool defines which addresses are allowed out of the router defines which addresses can be accessed from the inside network

6. What is a common use of a TFTP server? to allow access to restricted system resources to detect attacks against a network and send logs to a management console to provide active defense mechanisms that prevent attacks against the network to perform IOS image and configuration uploads and downloads over the network

7.

Refer to the exhibit. To reach R2, and for configuring Frame Relay on the point-to-point interfaces shown in the graphic, which DLCI should be used in the frame-relay interface-dlci command that is issued on R1?

100 101 200 201

8.

Refer to the exhibit. What is another way to represent this IPv6 address? 2031::130F::9C0::130B 2031::130F::9C0:0:130B 2031:0:130F::9C0::130B 2031:0:130F::9C0:0:130B

9.

Refer to the exhibit. PC1, PC2, and PC3 are configured with dynamic address assignments. PC2 is assigned an IP address from the DHCP server. What would account for the IP addresses that are currently assigned to PC1 and PC3?

Switch S2 port Fa0/12 is configured for full-duplex. These addresses were included in the DHCP server pools. Router R1 has a misconfigured IP address on interface Fa1/0. R1 interface Fa0/0 is not in the same network as the DHCP server. R1 interfaces Fa0/0 and Fa1/0 do not include the ip helper-address command.

10.

Refer to the exhibit. A technician issues the show interface s0/0/0 command on R1 while troubleshooting a network problem. What two conclusions can be determined by from the output shown? (Choose two.)

The bandwidth has been set to the value of a T1 line. This interface should be configured for PPP encapsulation. There is no failure indicated in an OSI Layer 1 or Layer 2. The physical connection between the two routers has failed. The IP address of S0/0/0 is invalid, given the subnet mask being used.

11. Which statement is true about NCP? Link termination is the responsibility of NCP. Each network protocol has a corresponding NCP. NCP establishes the initial link between PPP devices. NCP tests the link to ensure that the link quality is sufficient.

12

Refer to the exhibit. From the output of the show interface commands, at which OSI layer is a fault indicated?

application transport network data link physical

12.

Refer to the exhibit. PAT has been implemented on router R2. PC1 and PC2 are unsuccessful when attempting to connect to Internet resources. What is a possible cause?No NAT pool is configured.

The "inside" and "outside" interfaces are switched. The access control list is configured with an incorrect access list number. The access control list is missing a statement for the 10.94.6.0 network. The ip nat inside source list 1 interface command is pointing to the wrong serial interface.

13.

Refer to the exhibit. A network administrator configures a standard access control list on Router1 to prohibit traffic from the 192.168.0.0/24 network from reaching the Internet. The access control list also permits traffic from the 192.168.0.0/24 network to reach the 192.168.1.0/24 network. On which interface and in which direction should the access control list be applied?

interface Fa0/0, inbound interface Fa0/0, outbound interface S0/0/0, inbound interface S0/0/0, outbound

13.

Refer to the exhibit. Which statement is true about the configuration of R1? The remote session is encrypted. A password is sent in plain text. A connection that is using secure HTTP is enabled. A local username database is used for authentication.

14.

Refer to the exhibit. What can be concluded from the exhibited output of the debug ip nat command? The 10.1.1.225 host is exchanging packets with the 192.168.0.10 host. The native 10.1.200.254 address is being translated to 192.168.0.10. The 192.168.0.0/24 network is the inside network. Port address translation is in effect.

15.

Refer to the exhibit. How many addresses could be assigned to clients by DHCP_Router? 3 17 19 51 125

16.An administrator learns of an e-mail that has been received by a number of users in the company. This e-mail appears to come from the office of the administrator. The e-mail asks the users to confirm their account and password information. Which type of security threat does this e-mail represent?

cracking phishing phreaking spamming

17.

Refer to the exhibit. This serial interface is not functioning correctly. Based on the output shown, what is the most likely cause?

improper LMI type interface reset PPP negotiation failure unplugged cable

47. When configuring a Frame Relay connection, what is the purpose of Inverse ARP? to assign a DLCI to a remote peer to disable peer requests from determining local Layer 3 addresses to negotiate LMI encapsulations between local and remote Frame Relay peers to create a mapping of DLCI to Layer 3 addresses that belong to remote peers