CCNA 4Final Exam BWord文档下载推荐.docx
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3.Whichofthefollowingeliminatesswitchingloops?
•hold-downtimers
•poisonreverse
•spanningtreeprotocol
•timetolive
•splithorizonprotocol
4.Theshowcdpneighborscommandisaveryusefulnetworktroubleshootingtool.Usingtheoutputinthegraphic,selectthestatementsthataretrue.(Choosetwo.)
•CDPoperatesatthenetworklayeroftheOSImodel.
•TheoutputofthiscommanddisplaysinformationaboutdirectlyconnectedCiscodevicesonly.
•TheswitchisattachedtotheSanJose1FastEthernet0/21interface.
•SanJose1isrunningCDPversion12.0.
•SanJose1hastwofullyoperational,cdp-enabledCiscoswitchesdirectlyconnectedtoit.
•SanJose2isa2600seriesrouterrunningseveralroutedprotocols
5.AnetworkadministratorcanpingtheDenverrouter,butgetsa‘PasswordRequiredbutNoneSet’messagewhentryingtoconnectremotelyviaTelnet.WhichcommandsequencemustbeappliedtotheDenverroutertoallowremoteaccess?
•Router(config)#lineconsole0
Router(config-line)#login
Router(config-line)#passwordcisco
•Router(config)#linevty04
•Router(config)#linevirtualterminal
Router(config-line)#enablelogin
Router(config-line)#enablesecret
Router(config)#enablesecretcisco
Router(config)#enablecisco
6.Whichofthefollowingisassociatedwithlink-stateroutingprotocols?
•lowprocessoroverhead
•routingloops
•splithorizon
•shortest-pathfirstcalculations
7.Arouterdoesnotloaditsconfigurationafterapowerfailure.Afterrunningtheshowstartup-configurationcommand,theadminstratorfindsthattheoriginalconfigurationisintact.Whatisthecauseofthisproblem?
•Theconfigurationregisterissetfor0×
2100.
2101.
2102.
2142.
•Bootsystemcommandsarenotconfigured.
•FlashmemoryisemptycausingtheroutertobypasstheconfigurationinNVRAM
•Nederstpå
formularen
8.Whichcommandsareusedtoverifythecontentandplacementofaccesscontrollists?
•showipinterface
•showiproute
•showprocesses
•showrunning-config
•showcdpneighbor
•showaccess-lists
9.Whichofthefollowingarerequiredwhencreatingastandardaccesscontrollist?
(Choosetwo.)
•destinationaddressandwildcardmask
•sourceaddressandwildcardmask
•subnetmaskandwildcardmask
•accesslistnumberbetween100and199or2000and2699
•accesslistnumberbetween1and99or1300to1999
10.Whichofthefollowingarekeywordsthatcanbeusedinanaccesscontrollisttoreplaceadotteddecimalwildcardmask?
•most
•host
•all
•any
•some
•sum
11.Refertothediagram.AllportsonSwitchAareintheSalesVLANandallportsonSwitchBareintheAccountingVLAN.Howmanybroadcastdomainsandhowmanycollisiondomainsareshown?
(Choosetwo).
•3collisiondomains
•3broadcastdomains
•5broadcastdomains
•9collisiondomains
•10collisiondomains
•13collisiondomains
12.Refertothegraphic.UsingthemostefficientIPaddressingschemeandVLSM,whichaddresscanbeconfiguredononeoftheserialinterfaces?
•192.168.16.63/27
•192.168.16.158/27
•192.168.16.192/27
•192.168.16.113/30
•192.168.16.145/30
•192.168.16.193/30
13.WhatisthepurposeoftheSpanningTreeProtocol(STP)?
•preventsLayer2loops
•preventsroutingloopsonarouter
•createssmallercollisiondomains
•createssmallerbroadcastdomains
•allowsCiscodevicestoexchangeroutingtableupdates
14.WhatisthepurposeofaloopbackaddresswhenusingtheOSPFroutingprotocol?
•activatestheOSPFneighboringprocess
•ensuresapersistentrouterIDfortheOSPFprocess
•providesabackdoorforconnectivityduringtheconvergenceprocess
•streamlinesandspeedsuptheconvergenceprocess
15.WhichstatementistrueregardingstatesoftheIEEE802.1dSpanningTreeProtocol?
•Portsaremanuallyconfiguredtobeintheforwardingstate.
•Portslistenandlearnbeforegoingintotheforwardingstate.
•Portsmustbeblockedbeforetheycanbeplacedinthedisabledstate.
•Ittakes15secondsforaporttogofromblockingtoforwarding
16.Whichsequenceofcommandsisusedtoconfigurealoopbackaddressonarouter?
•Router1(config)#interfaceloopback1
Router1(config-if)#ipaddress192.168.1.1
Router1(config)#interfaceserial0/0
•Router1(config-if)#loopback1
Router1(config-if)#ipaddress192.168.1.1255.255.255.0
Router1(config-if)#ipaddress192.168.1.1255.255.255.255
17.WhichroutingprotocolsareclassfulanddonotsupportVLSM?
•EIGRP
•OSPF
•RIPv1
•RIPv2
•IGRP
18.Refertothegraphic.Twoswitchesareconnectedtogetherthroughatrunkport.SW2displaysthemessageshown.Whichofthefollowingwillsolvetheduplexmismatch?
•SW1(config)#interfacefastethernet0/1
SW1(config-if)#duplexfull
SW1(config-if)#full-duplex
•SW2(config)#interfacefastethernet0/1
SW2(config-if)#duplexfull
SW2(config-if)#full-duplex
19.Refertothegraphic.TworoutershavebeenconfiguredtouseEIGRP.Packetsarenotbeingforwardedbetweenthetworouters.Whatcouldbetheproblem?
•EIGRPdoesnotsupportVLSM.
•Therouterswerenotconfiguredtomonitorneighboradjacencychanges.
•Thedefaultbandwidthwasusedontherouters.
•AnincorrectIPaddresswasconfiguredonarouterinterface.
20.Accordingtothetheprovidedrouteroutput,whichofthefollowingstatementsistrueregardingPPPoperation?
•Onlythelink-establishmentphasecompletedsuccessfully.
•Onlythenetwork-layerphasecompletedsuccessfully.
•Neitherthelink-establishmentphasenorthethenetwork-layerphasecompletedsuccessfully.
•Boththelink-establishmentandnetwork-layerphasecompletedsuccessfully
21.FrameRelayisconfiguredoverapoint-to-pointconnectionbetweentworouters.Theoutputoftheshowframe-relaypvccommandindicatesthatthestatusofthisPVCisinactive.Whichofthefollowingdevicescouldbethesourceoftheproblem?
•localrouter
•localFrameRelayswitch
•remoterouter
•remoteFrameRelayswitch
•R3hasthefollowingconfiguration:
•R3#showrunning-config
•–someoutputtextomitted–
•interfaceserial0/0
•bandwidth128
•ipaddress192.168.11.2255.255.255.0
•encapsulationframe-relay
•frame-relaymapip192.168.11.230broadcast
22.AfterthecommandR3#debugframe-relaypacketisexecuted,apingisissuedfromR3toR1butisunsuccessful.Basedontheoutputofthedebugcommandshowninthegraphicandtherouterconfiguration,whatmightbeproblem?
•Noclockrateassigned.
•ThereisanincorrectDLCInumberinthemapstatement.
•AnincorrectIPaddressexistsinthemapstatement.
•Theencapsulationcommandismissingthebroadcastkeyword
23.WhichstatementsaretrueregardingtheFrameRelayLMI?
•TheLMIprovidesavirtualcircuit(VC)statusmechanism.
•TheLMItypemustalwaysbemanuallyconfigured.
•TheavailableLMItypesareNI1,DMS100and5ESS.
•TheLMItypessupportedbyCiscoroutersareCISCOandIETF.
•TheLMItypeconfiguredontheroutermustmatchtheoneusedontheFrameRelayswitch.
•TheLMIusesreservedDLCIstoexchangemessagesbetweentheDTEandDCE
24.WhichstatementdescribestheprocessthatoccursinNetworkAddressTranslation(NAT)overloading?
•MultipleprivateIPaddressesaremappedtoonepublicIPaddress.
•Thenumberofusableaddressesassignedtoacompanyisdividedintosmallermanageablegroups.
•ApoolofIPaddressesaremappedtooneormoreMACaddresses.
•TherouteractsasaDHCPserverandassignsmultiplepublicIPaddressesforeachprivateIPaddressconfigured
25.WhichtwostatementsaretrueaboutthecommittedinformationrateonaFrameRelaylink?
•ThesumoftheCIRsforallPVCsmustbelessthantheportspeed.
•ThesumoftheCIRsforallPVCsmustequaltheportspeed.
•ThesumoftheCIRsforallPVCscanbegreaterthantheportspeed.
•TheDEbitwillbesetonframesthataretransmittedinexcessoftheCIR.
•FramesthataretransmittedatgreaterthantheCIRwillbediscardedatthesource.
•ItisimpossibletotransmitframesatarateinexcessoftheCIR
26.Whichofthefollowingcommandswouldbeusedtotroubleshootthe
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