CISCO CCNA Certifications_ CCNA 2_Final Set 2 (1130848), страница 2
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The network shown in the diagram is havingproblems routing traffic. It is suspected that theproblem is with the addressing scheme. What is theproblem with the addressing used in the topology?The address assigned to the Ethernet0 interface of Router1is a broadcast address for that subnetwork.Thesubnetworkconfiguredontheseriallink betweenRouter1 and Router2 overlaps with the subnetwork assignedto Ethernet0 of Router3.The subnetwork assigned to the Serial0 interface of Router1is on a different subnetwork from the address for Serial0 ofRouter2.The subnetwork assigned to Ethernet0 of Router2 overlapswith the subnetwork assigned to Ethernet0 of Router3.19.
Refer to the exhibit. Packets destined to which twonetworks will require the router to perform a recursivelookup? (Choose two.)10.0.0.0/864.100.0.0/16128.107.0.0/16172.16.40.0/24192.168.1.0/24192.168.2.0/2420. Refer to exhibit. A company network engineerentersthefollowingcommandsintherouters:R1(config)# ip route 10.1.1.0 255.255.255.0192.168.0.2R2(config)#iproute10.1.2.0255.255.255.0 192.168.0.1When the engineer entersthe show ip route command on R1, the routing tabledoes not display the static route to the 10.1.1.0network.AllR1andR2interfacesare correctlyaddressed per the graphic. What is a logical next stepthat the engineer could take in order to make the staticroute display in the routing table in R1?Enter default routes in R1 and R2.Enable the R1 and R2 serial interfaces.Configure the static route to use an exit interface instead ofa next-hop address.http://cisco-ccna-certifications.blogspot.com/2008/08/ccna-2final-set-2.html[10/29/2008 4:04:06 PM]CISCO CCNA Certifications: CCNA 2:Final Set 2Enter the copy run start command to force the router torecognize the configuration.21.
When the show cdp neighbors command is issuedfrom Router C, which devices will be displayed in theoutput?D, SWH-2A, B, DSWH-1, SWH-2B, DSWH-1, A, BA, B, D, SWH-1, SWH-222. Refer to the exhibit. R1 knows two routes, Path Aand Path B, to the Ethernet network attached to R3. R1learned Path A to network 10.2.0.0/16 from a staticroute and Path B to network 10.2.0.0/16 from EIGRP.Which route will R1 install in its routing table?Both routes are installed and load balancing occurs acrossboth paths.The route via Path B is installed because the EIGRP routehas the best metric to network 10.2.0.0/16.The route via Path A is installed because the static route hasthe best metric to network 10.2.0.0/16.The route via Path B is installed because the EIGRP routehasthelowestadministrativedistancetonetwork10.2.0.0/16.The route via Path A is installed because the static route hasthe lowest administrative distance to network 10.2.0.0/16.23.
A network administrator has enabled RIP onrouters B and C in the network diagram. Which of thefollowing commands will prevent RIP updates frombeing sent to Router A?A(config)# router ripA(config-router)# passive-interface S0/0B(config)# router ripB(config-router)# network 192.168.25.48B(config-router)# network 192.168.25.64A(config)# router ripA(config-router)# no network 192.168.25.32B(config)# router ripB(config-router)# passive-interface S0/0A(config)# no router rip24. Refer to the exhibit. The network administrator istesting network connectivity by issuing the tracertcommand from host A to host B. Given the exhibitedoutput on host A, what are two possible routing tableissues on the network? (Choose two.)http://cisco-ccna-certifications.blogspot.com/2008/08/ccna-2final-set-2.html[10/29/2008 4:04:06 PM]CISCO CCNA Certifications: CCNA 2:Final Set 2Router1 is missing a route to the 172.16.0.0 networkRouter1 is missing a route to the 192.168.1.0 networkRouter2 is missing a route to the 10.0.0.0 networkRouter2 is missing a route to the 172.16.0.0 networkRouter3 is missing a route to the 10.0.0.0 networkRouter3 is missing a route to the 192.168.0.0 network25.
Refer to the exhibit. What will happen if interfaceSerial0/0/1 goes down on Router1?The Dijkstra algorithm will calculate the feasible successor.DUALwillqueryneighborsforaroutetonetwork192.168.1.0.Neighbor172.16.3.2willbepromotedtothe feasiblesuccessor.Traffic destined to the 192.168.1.0 network will be droppedimmediately due to lack of a feasible successor.26. Refer to the exhibit. Pings are failing betweenHostA and HostB.
The network administrator discoversthat Router1 does not have a route to the 172.16.0.0network. Assuming Router2 is configured correctly,which two static routes could be configured on Router1to enable Host A to reach network 172.16.0.0? (Choosetwo.)ip route 172.16.0.0 255.255.0.0 S0/0ip route 172.16.0.0 255.255.0.0 S0/1ip route 172.16.0.0 255.255.0.0 192.168.0.1ip route 172.16.0.0 255.255.0.0 192.168.0.2ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/0ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/127. Refer to the exhibit. The results of the show iproute command are displayed in the graphic for RouterR2. Which route will be selected for a packet with adestination address of 10.1.4.1?static route to 10.1.0.0/22RIP route to 10.1.0.0/23RIP route to 10.1.0.0/240.0.0.0/0 via 192.168.0.128.
Refer to the exhibit. The network is running the RIProuting protocol. Network 10.0.0.0 goes down. Whichstatement is true regarding how the routers in thistopology will respond to this event?Router4 will learn about the failed route 30 seconds later inthe next periodic update.Split horizon will prevent Router4 from fowarding packets tothe 10.0.0.0 network until the holddown timer expires.Router5 immediately flushes the unreachable route from itsrouting table.http://cisco-ccna-certifications.blogspot.com/2008/08/ccna-2final-set-2.html[10/29/2008 4:04:06 PM]CISCO CCNA Certifications: CCNA 2:Final Set 2Router5 will send Router4 a triggered update with a metricof 16 for network 10.0.0.0.29.
Refer to the exhibit. When troubleshooting anetwork, it is important to interpret the output ofvarious router commands. On the basis of the exhibit,which three statements are true? (Choose three.)The missing information for Blank 1 is the command show iproute.The missing information for Blank 1 is the command debugip route.The missing information for Blank 2 is the number 100.The missing information for Blank 2 is the number 120.The missing information for Blank 3 is the letter R.The missing information for Blank 3 is the letter C.30. A network administrator has configured a defaultroute on Router_A but it is not being shared withadjacent Router_B and the other routers in the OSPFarea. Which command will save the administrator thetime and trouble of configuring this default route onRouter_B and all of the other routers in the OSPF area?Router_A(config-router)# ospf redistribute default-routeRouter_B(config-router)# ospf redistribute default-routeRouter_A(config-router)# default-information originateRouter_B(config-router)# default-information originateRouter_A(config-router)# ip ospf update-defaultRouter_B(config-router)# ip ospf update-default31.
Refer to the exhibit. The network administratorissues the command no ip classless on Router1. Whatforwarding action will take place on a packet that isreceivedbyRouter1andisdestinedfor host192.168.0.26?The packet will be dropped.The packet will be forwarded to the gateway of last resort.The packet will match the 192.168.0.0 network and beforwarded out Serial 0/0.The packet will most closely match the 192.168.0.8 subnetand be forwarded out Serial 0/1.32. Refer to the exhibit. A packet enters Router1 with adestination IP of 172.16.28.121. Which routing tableentry will be used to forward this packet to thedestination address?172.16.0.0/16 [1/0] via 192.168.0.1172.16.0.0/20 [1/0] via 192.168.0.9172.16.16.0/20 [1/0] via 192.168.0.170.0.0.0/0 is directly connected, Serial0/0/133.
The network administrator configures the routerwith the ip route 172.16.1.0 255.255.255.0 172.16.2.2http://cisco-ccna-certifications.blogspot.com/2008/08/ccna-2final-set-2.html[10/29/2008 4:04:06 PM]CISCO CCNA Certifications: CCNA 2:Final Set 2command. How will this route appear in the routingtable?C 172.16.1.0 is directly connected, Serial0/0S 172.16.1.0 is directly connected, Serial0/0C 172.16.1.0 [1/0] via 172.16.2.2S 172.16.1.0 [1/0] via 172.16.2.234. Using default settings, what is the next step in therouter boot sequence after the IOS loads from flash?Perform the POST routine.Search for a backup IOS in ROM.Load the bootstrap program from ROM.Load the running-config file from RAM.Locate and load the startup-config file from NVRAM.35.
What does RIP use to reduce convergence time in alarger network?It reduces the update timer to 15 seconds if there are morethen 10 routes.It uses triggered updates to announce network changes ifthey happen in between the periodic updates.It uses random pings to detect if a pathway is down andtherefore is preemptive on finding networks that are down.It uses multicast instead of broadcast to send routingupdates.36. Refer to the exhibit. What are the effects of theexhibited commands on the router?All passwords are encrypted.Only Telnet sessions are encrypted.Only the enable password is encrypted.Only the enable password and Telnet session are encrypted.Enable and console passwords are encrypted.37. Refer to the exhibit. What is the most efficientsummarization of the routes attached to router R1?198.18.0.0/16198.18.48.0/21198.18.32.0/22198.18.48.0/23198.18.49.0/23198.18.52.0/2238.
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