CCNA 2Final Exam B.docx

CCNA 2Final Exam B.docx

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CCNA2FinalExamB

CCNA2-FinalExam（B）

Postedbybeotronat9:

08PM

1.Refertotheexhibit.Theoutputoftheshowiproutecommandforthreeroutersonanetworkisdisplayed.Allroutersareoperational,pingsarenotblockedonthisnetwork,andnodefaultroutesareinstalled.Whichtwopingswillfail?

（Choosetwo.）

•fromR1to172.16.1.1

•fromR1to192.168.3.1

•fromR2to192.168.1.1

•fromR2to192.168.3.1

•fromR3to192.168.1.1

2.ArouterthatusestheRIProutingprotocolhasanentryforanetworkintheroutingtable.Itthenreceivesanupdatewithanotherentryforthesamedestinationnetworkbutwithalowerhopcount.Whatactionwilltheroutertakeforthisnewupdate?

•Itwillappendtheupdateinformationtotheroutingtable.

•Itwillinvalidatetheentryforthatnetworkintheroutingtable.

•Itwillreplacetheexistingroutingtableentrywiththenewinformation.

•Itwillignorethenewupdate.

3.WhichtwostatementsaretrueforOSPFHellopackets?

（Choosetwo.）

•Theynegotiatecorrectparametersamongneighboringinterfaces.

•Theyareusedfordynamicneighbordiscovery.

•Theyusetimerstoelectthedesignatedrouterwiththefastestlink.

•Theyarereceivedfromallroutersonthenetworkandusedtodeterminethecompletenetworktopology.

•Theyareusedtomaintainneighborrelationships.

4.Anetworkadministratorneedstoconfigureasingleroutertoload-balancethetrafficoverunequalcostpaths.Whichroutingprotocolshouldtheadministratoruse?

•EIGRP

•OSPF

•RIPv1

•RIPv2

5.Whichtwostatementsarecorrectaboutthesplithorizonwithpoisonreversemethodofroutingloopprevention?

（Choosetwo.）

•ItisenabledbydefaultonallCiscoIOSimplementations.

•Itassignsavaluethatrepresentsaninfinitemetrictothepoisonedroute.

•Itsendsbackthepoisonedrouteupdatetothesameinterfacefromwhereitwasreceived.

•Itinstructsrouterstoholdallchangesthatmightaffectroutes,foraspecifiedperiodoftime.

•Itlimitsthenumberofhopsapacketcantraversethroughthenetworkbeforeitisdiscarded.

6.Refertotheexhibit.Theshowcdpneighborscommandwasrunononeofthedevicesasshown.Basedonthisinformation,whichtwofactscanbedetermined?

（Choosetwo.）

•Thecommandwasrunontherouter.

•ABCDisanon-CISCOdevice.

•Layer3connectivitybetweentwodevicesexists.

•ABCDsupportsroutingcapability.

•ABCDisconnectedtotheFa0/0interfaceoftheneighboringdevice.

7.Refertotheexhibit.Thenetworkhasthreeconnectedrouters:

R1,R2andR3.Theroutesofallthreeroutersaredisplayed.Whatcanbeverifiedfromtheoutput?

•R1andR3areconnectedtoeachotherviatheS0/0/0interface.

•TheIPaddressoftheS0/0/0interfaceofR1is10.1.1.2.

•TheIPaddressoftheS0/0/1interfaceofR2is10.3.3.2.

•R2isconnectedtotheS0/0/1interfaceofR3.

8.Refertotheexhibit.WhichthreestatementsaretrueoftheroutingtableforRouter1?

（Choosethree.）

•Theroutetonetwork172.16.0.0hasanADof156160.

•Network192.168.0.16canbestbereachedusingFastEthernet0/0.

•TheADofEIGRProuteshasbeenmanuallychangedtoavalueotherthanthedefaultvalue.

•Router1isrunningboththeEIGRPandOSPFroutingprocess.

•Network172.17.0.0canonlybereachedusingadefaultroute.

•Nodefaultroutehasbeenconfigured.

9.Refertotheexhibit.AlltheroutersareproperlyconfiguredtousetheRIProutingprotocolwithdefaultsettings,andthenetworkisfullyconverged.RouterAisforwardingdatatorouterE.Whichstatementistrueabouttheroutingpath?

•RouterAwillsendthedataviatheA-D-Epaththatislistedintheroutingtable.

•RouterAwillload-balancethetrafficbetweenA-B-EandA-C-E.

•RouterAwilldeterminethatallpathshaveequalmetriccost.

•RouterAwillsendthedatathroughA-D-EandkeepA-B-EandA-C-Easthebackuppaths.

10.Refertotheexhibit.ThenetworkadministratorhasrunthefollowingcommandonR1.

R1#iproute192.168.2.0255.255.255.0172.16.1.2Whatistheresultofrunningthiscommand?

•Trafficfornetwork192.168.2.0isforwardedto172.16.1.2.

•Thisrouteisautomaticallypropagatedthroughouttheentirenetwork.

•Trafficforallnetworksisforwardedto172.16.1.2.

•Thecommandinvokesadynamicroutingprotocolfor192.168.2.0.

11.Refertotheexhibit.ThenetworkadministratorisplanningIPaddressingofanewnetwork.WhatpartofthisaddressingschememustbechangedtoallowcommunicationbetweenhostAandtheserver?

•theIPaddressoftheserver

•thedefaultgatewayofhostA

•theIPaddressofhostA

•thedefaultgatewayoftheserver

12.Refertotheexhibit.AnetworkadministratorhasconfiguredOSPFusingthefollowingcommand:

network192.168.1.320.0.0.31area0

WhichrouterinterfacewillparticipateinOSPF?

•FastEthernet0/0

•FastEthernet0/1

•Serial0/0/0

•Serial0/0/1

13.Refertotheexhibit.AllroutersareconfiguredtorunRIPv1andarefullyconverged.WhichroutingupdateswillbereceivedbyR3?

•updatesfor192.168.1.0/24and192.168.2.0/24

•updatesfor172.16.2.0/24and172.16.3.0/24

•updatesfor172.16.1.0/24,172.16.2.0/24and172.16.3.0/24

•updatesfor172.16.0.0/16

14.Refertotheexhibit.BothroutersareusingtheRIPprotocol.Devicesonthe192.168.1.1networkcanpingtheS0/0/0interfaceonR2butcannotpingdevicesonthe192.168.2.1network.Whatisapossiblecauseofthisproblem?

•TheroutersareconfiguredwithdifferentversionsofRIP.

•R2isnotforwardingtheroutingupdates.

•TheR1configurationshouldincludethenoauto-summarycommand.

•Themaximumpathnumberhasbeenexceeded.

15.Whenarouterboots,whatisthedefaultordertolocatetheCiscoIOSifthereisnobootsystemcommand?

•ROM,TFTPserver,flash

•flash,TFTPserver,RAM

•flash,NVRAM,TFTPserver

•ROM,flash,TFTPserver

16.Refertotheexhibit.Whichrouterisadvertisingsubnet172.16.1.32/28?

•Router1

•Router2

•Router3

•Router4

17.Whichmechanismhelpstoavoidroutingloopsbyadvertisingametricofinfinity?

•routepoisoning

•splithorizon

•hold-downtimer

•triggeredupdates

18.Refertotheexhibit.Whatisthemeaningofthehighlightedvalue120?

•Itisthemetricthatiscalculatedbytheroutingprotocol.

•ItisthevaluethatisusedbytheDUALalgorithmtodeterminethebandwidthforthelink.

•Itistheadministrativedistanceoftheroutingprotocol.

•Itisthehold-downtime,measuredinseconds,beforethenextupdate.

19.Refertotheexhibit.AnetworkadministratorsuccessfullypingsR1fromR3.Next,theadministratorrunstheshowcdpneighborscommandonR3.Theoutputofthiscommandisdisplayed.WhataretworeasonsfortheabsenceofR1intheoutput?

（Choosetwo.）

•ThereisaLayer2connectivityproblembetweenR1andR3.

•TheFa0/0interfaceofR1isconfiguredwithanincorrectIPaddress.

•ThenocdpruncommandhasbeenrunatR1.

•ThenocdpenablecommandhasbeenrunatFa0/1interfaceofR3.R1ispoweredoff.

20.Refertotheexhibit.AdeviceisrequiredtocompletetheconnectionbetweenrouterR1andtheWAN.Whichtwodevicescanbeusedforthis?

（Choosetwo.）

•aCSU/DSUdevice

•amodem

•anEthernetswitch

•ahub

•abridge

21.Inacomplexlabtestenvironment,arouterhasdiscoveredfourpathsto192.168.1.0/24viatheuseoftheRIProutingprocess.Whichroutewillbeinstalledintheroutingtableafterthediscoveryofallfourpaths?

•R192.168.1.0/24[120/3]via192.168.110.1,00:

00:

17,Serial0/1/0

•R192.168.1.0/24[120/2]via192.168.200.1,00:

00:

17,Serial0/0/0

•R192.168.1.0/24[120/1]via192.168.100.1,00:

00:

17,Serial0/0/1

•R192.168.1.0/24[120/4]via192.168.101.1,00:

00:

17,Serial0/1/1

22.Refertotheexhibit.AnetworkadministratoraccessesrouterR1fromtheconsoleporttoconfigureanewlyconnectedinterface.Whatpasswordswillthenetworkadministratorneedtoentertomaketheconnectionandthenecessaryconfigurationchanges?

•theCisco123passwordonly

•theCisco789passwordonly

•theCisco001passwordonly

•theCisco001passwordandtheCisco789passwords

•theCisco001passwordandtheCisco123passwords

23.Refertotheexhibit.AnetworkadministratoraddsthiscommandtorouterR1:

iproute192.168.2.0255.255.255.0S0/0/0.Whatistheresultofaddingthiscommand?

•Thisrouteisautomaticallypropagatedthroughoutthenetwork.

•Thetrafficfornetwork172.16.1.0isforwardedtonetwork192.168.2.0.

•Astaticrouteisestablished.

•ThetrafficforallClassCnetworksisforwardedto172.16.1.2.

24.Refertotheexhibit.Therouterreceivesapacketthatisdestinedfor192.168.5.79.Howwilltherouterhandlethispacket?

•ItwillforwardthepacketviatheSerial0/0/1interface.

•ItwillforwardthepacketviatheFastEthernet0/0interface.

•ItwillforwardthepacketviatheSerial0/0/0interface.

•Itwilldropthepacket.

25.Whichtwostatementsaretrueaboutclasslessroutingprotocols?

（Choosetwo.）

•Theycanbeusedfordiscontiguoussubnets.

•Theycanforwardsupernetroutesinroutingupdates.

•Theycannotimplementclassfulroutesinroutingtables.

•Theyuseonlyahopcountmetric.

•Theydonotincludethesubnetmaskinroutingupdates.

26.Refertotheexhibit.Howmanyroutesarechildroutes?

•1

•3

•4

•6

27.ArouterhasEIGRPconfiguredastheonlyroutingprotocol.InwhattwowaysdoesEIGRPrespondifthereisnofeasiblesuccessorroutetoadestinationnetworkandthesuccessorroutefails?

（Choosetwo.）

•Itbroadcastshellopacketstoallroutersinthenetworktore-establishneighboradjacencies.

•Itsendsqueriestoadjacentneighborsuntilanewsuccessorrouteisfound.

•