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Practice Finals

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

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

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 downin favor of the newer technology.

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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.

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

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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 and172.16.4.5.

The router will ignore all traffic that comes from the DHCP servers with addresses172.16.4.1 and 172.16.4.5.

Refer to the exhibit. A host that is connected to Fa0/0 is unable to acquire an IPaddress 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 isthe problem?

The default router for the 172Network pool is incorrect.

The 172.16.1.1 address is already configured on Fa0/0.

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The pool of addresses for the 172Network pool is incorrect.

The ip helper-address command should be implemented on the Fa0/0interface.

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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

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A system administrator must provide Internet connectivity for ten hosts in a small remote office. The

assigned two public IP addresses to this remote office. How can the system administrator configure tprovide 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.Bottom of Form

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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.

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At what physical location does the responsibility for a WAN connection change from theservice provider to the user?

DMZ

local loop

CSU/DSU

demarcation point

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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 toconnect to the service provider network.

It provides termination for the digital signal and ensures connection integritythrough error correction and line monitoring.

It converts the digital signals produced by a computer into voice frequenciesthat can be transmitted over the analog lines of the public telephone network.

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Refer to the exhibit. A network administrator is using two routers to test a WANconnection . 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.

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

queuing strategy

serial cable type

interface IP address

encapsulation method

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Which combination of Layer 2 protocol and authentication should be used to establish a linkbetween 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

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Which three items are LCP options that can be configured for PPP? (Choose three.)

CHAP

Stacker

IPCP

CDPCP

Multilink

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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

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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.

Refer to the exhibit. What would be the result of entering the exhibitedconfiguration 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.

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Routing protocol multicast updates can be forwarded across the Frame RelayPVC.

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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

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A company uses a PVC with a committed information rate (CIR) of 128 kb/s and acommitted burst information rate (CBIR) of 64 kb/s. The link is used to periodically sendupdates 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 isencountered.

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Which two functions are provided by the Local Management Interface (LMI) that is used inFrame 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

Refer to the exhibit. You are a network administrator who has been tasked withcompleting the Frame Relay topology that interconnects two remote sites. Howshould the point-to-point subinterfaces be configured on HQ to complete thetopology?

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HQ(config-subif)#frame-relay interface-dlci 103 on Serial 0/0/0.1HQ(config-subif)#frame-relay interface-dlci 203 on Serial 0/0/0.2

HQ(config-subif)#frame-relay interface-dlci 301 on Serial 0/0/0.1HQ(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 Serial0/0/0.1HQ(config-subif)#frame-relay map ip 172.16.2.2 203 broadcast on Serial0/0/0.2

HQ(config-subif)#frame-relay map ip 172.16.1.1 301 broadcast on Serial0/0/0.1HQ(config-subif)#frame-relay map ip 172.16.2.2 302 broadcast on Serial0/0/0.2

Refer to the exhibit. Branch A has a Cisco router. Branch B has a non-Cisco routerset for IETF encapsulation. After the commands shown are entered, R2 and R3 failto establish the PVC. The R2 LMI is Cisco, and the R3 LMI is ANSI. The LMI is

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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 ietfparameter is missing from the frame-relay map ip 10.10.10.3 203command.

The PVCs at R2 use different encapsulation types. A single port can onlysupport one encapsulation type.

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Refer to the exhibit. A technician is teaching a trainee to interpret the results of various FrameRelay 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 DLCI177.

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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 theDSLAM.

Refer to the exhibit. A packet is being sent from Host A to Host B through the VPNtunnel between R1 and R3. When the packet first arrives at R3, what are the sourceand 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

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What is a major characteristic of a worm?

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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

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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

When configuring remote access to a router, what is the significance of the nopassword 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 tothe router.

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What will be the result of the enable secret command when added at the global configurationmode on the router?

It will useMD5encryption toprotect theprivileged

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EXEC levelaccess.It will usetype 7encryptionand willencrypt onlytheprivilegedEXEC levelpasswords.It will usetype 7encryption toprevent allpasswordsthat are

displayed onthe screenfrom beingreadable.It will useMD5encryption toprotect thepasswordsthat are onlyused in thePAP andCHAPauthentication process.

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Refer to the exhibit. A network administrator is trying to backup the IOSsoftware on R1 to the TFTP server. He receives the error message that isshown in the exhibit, and cannot ping the TFTP server from R1. Whataction 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 defaultgateway.

Ensure that the laptop has an IP address in the 192.168.1.0/24network.

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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.

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

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Refer to the exhibit. Which two statements correctly describe how Router1 processes an FTPrequest 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-list201 permit ip any any command.

The router matches the incoming packet to the statement that is created from the access-list101 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-list201 deny icmp 192.168.1.0 0.0.0.255 any command.

The packet is allowed into Router1.

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Refer to the exhibit. An ACL numbered 101 already exists on this router. What happens if the net

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.

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

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The access list has the incorrect port number for SSH.

The ip helper command is required on S0/0/0 to allow inbound connections.

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A network administrator added two switches and a new VLAN over the past weekend. How canthe administrator determine if the additions and changes improved performance and availabilityon the company intranet?

Perform a baseline test and compare the current values to values that were obtained inprevious weeks.

Interview departmental secretaries and determine if they think load time for web pages isimproved.

Compare the hit counts on the company web server for the current week to the values thatwere recorded from previous weeks.

Performance on the intranet can be determined by monitoring load times of company webpages from remote sites.

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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 amongoffices 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

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Refer to the exhibit. Router1 and Router2 each support separate areas of a datacenter, and are connected via a crossover cable. Resources attached to Router1 areunable 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.

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An administrator is unable to receive e-mail. While troubleshooting the problem, theadministrator is able to ping the local mail server IP address successfully from a remote networkand can successfully resolve the mail server name to an IP address via the use of the nslookupcommand. At what layer of the OSI model is the problem most likely to be found?

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application

transport

network

data link

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

cable fault

faulty NIC card

IP addressing error

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spanning tree problem

NAT configuration error

This item references content from the following areas:CCNA Exploration: Accessing the WAN

8.5.3 Troubleshooting Enterprise Networks 3

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Refer to the exhibit. The corporate network that is shown has been assigned network 172.16.128.0/19branch office LANs. VLSM is not being used. Which subnet mask will allow the most efficient utilizaddresses?

/21

/22

/23

/24

/25

/26

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This item references content from the following areas:CCNA Exploration: Accessing the WAN

8.5.3 Troubleshooting Enterprise Networks 3

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Refer to the exhibit. Which VLAN will carry untagged traffic on FastEthernet 0/1?

VLAN 1

VLAN 2

VLAN 11

VLAN 12

VLAN 30

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

network layer

application layer

data-link layer

physical layer

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Refer to the exhibit. An administrator has added the exhibited commands torouters 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 forboth routers.

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