CCNA测试题英文版(题目)

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1、CCNATest：Selection：1.Areceivinghostcomputesthechecksumonaframeanddeterminesthatdeterminesthattheframeisdamaged.Theframeisthendiscarded.AtwitchOSIlayerdidthishappen?A：sessionB：networkC：physicalD：datalinkE：transport2.WheredoesroutingoccurwithintheDoDTCP/IPreferencemode

2、l?A：applicationB：internetC：networkD：transport3.Whichcommandcanbearoutertoverifythelayer3pathtoahost?A：tracerouteaddressB：tracertaddressC：sshaddressD：telnetaddress4.WhicharevalidmodesforaswitchportusedasaVLANtrunk？（ChooseThree）A：transparentB：autoC：onD：DesirableE：block

3、ingF：forwarding5.WhatisonbenefitofPVST+?A：PVST+reducestheCPUcyclesforalltheswitchesinthenetworkB：PVST+automaticallyselectstherootbridgelocation,toprovideoptimizedbandwidthusage.C：PVST+allowtherootswitchlocationtobeoptimizedpervlan.D：PVST+supportsLayers3loadbalancingl

4、oops6.IfIProutingisenable,whichcommandthatyoucanconfigureadefault-routerinaroute?A：ipdefault-gateway0.0.0.0B：iproute172.16.2.10.0.0.00.0.0.0C：ipdefault-route0.0.0.00.0.0.0172.16.2.1D：iproute0.0.0.00.0.0.0172.16.2.17.WhichcommandisuserdtodisplaythecollectionofOSPFlink

5、states?A：showipospflsadatabaseB：showipospflink-stateC：showipospfneighborsD：showipospfdatabase8.WhichcommanddisplaysIOSversion?A：showprotocolB：showprocessC：showsystemD：showversion9.WhichistheupdatetimeandtheMulticastupdateaddressofRIPv2Protocol?A：30s，255.255.255.255B：

6、30s：224.0.0.9C：10s：255.255.255.255D：10s：224.0.0.910.WhichcommandenablePVST+onaswitch?A：spanning-treemoderapid-pvstB：spanning-treeuplinkfastC：spanning-treebackbonefastD：spanning-treemodemstCompletion：1.Writeoutadministratedistanceofthefollowingroutingprotocol：Connect_

7、____、Static_____、RIP_____、OSPF_____、interiorEIGRP_____，ExternalEIGRP_____.2.WhichmodesofaswitchinVTPdomain?Andwhatitis?__________________________.3.WhichcommandusedtocopyIOSfiletoTFTPserver?____________________________.4.ThelargesthopofRoutingInformationProtocolis___

8、_____________________________.5.WhichcommandcanconfiguretheroutingfunctioninaLayer3Switch?______________.Question:Refertotheexhibit