思科認(rèn)證互聯(lián)網(wǎng)專家CCIE考試(習(xí)題卷6)

試卷科目：思科認(rèn)證互聯(lián)網(wǎng)專家CCIE考試思科認(rèn)證互聯(lián)網(wǎng)專家CCIE考試(習(xí)題卷6)PAGE"pagenumber"pagenumber/SECTIONPAGES"numberofpages"numberofpages思科認(rèn)證互聯(lián)網(wǎng)專家CCIE考試第1部分：?jiǎn)雾?xiàng)選擇題，共82題，每題只有一個(gè)正確答案,多選或少選均不得分。[單選題]1.Whichunitisusedtoexpressthesignal-to-noseratio?A)MwB)AmpC)DbD)Dbm答案:C解析:[單選題]2.AclientwithIPaddress5mustaccessawebserveronport80at25.Toallowthistraffic,anengineermustaddastatementtoanaccesscontrollistthatisappliedintheinbounddirectionontheportconnectingtothewebservers.Whichstatementallowsthistraffic?A)permittcphost25lt80host5B)permittcphost5host25eq80C)permittcphost25eq80host5D)permittcphost25host5eq80答案:C解析:[單選題]3.yournetflowcollectorisnotworkingduetoalargeamountoftrafficenteringyournetworkwhichisdestinedtoasingleIPaddress.Whichnetflowfeatureallowsyoutocollectthetopsourcehostsforthistrafficonthelocalrouter?A)ANETFLOWCANEXPORTFLOWSONLYTOAEXTERMALFLOWCOLLECTORB)SHOWIPCACHEFLOWC)IPACCOUNTINGD)IPFLOW-TOP-TALKERS答案:D解析:[單選題]4.WhichIPSLAoperationtypeusesIPtomeasuretheround-triptimebetweenarouterandadevice?A)HTTPB)ICMPECHOC)ICMPPATHJITTERD)UDPJITTERFORVOIP答案:B解析:[單選題]5.AnengineerisconfiguringlocalwebauthenticationonaWLAN.TheengineerchoosestheAuthenticationradiobuttonundertheLayer3SecurityoptionsforWebPolicy.WhichdevicepresentsthewebauthenticationfortheWLAN?A)ISEserverB)RADIUSserverC)anchorWLCD)localWLC答案:D解析:[單選題]6.whichcommandcanyouentertoconfigureabuilt-inpolicerwithminimumguaranteedbandwidthwithoutstarvingotherclassesduringperiodsofcongestion?A)BANDWIDTHREMAININGPERCENTB)BANDWIDTHC)PRIORITYPERCENTD)FAIR-QUEUE答案:C解析:[單選題]7.Insoftwaredefinedarchitectures,whichplaneisdistributedandresponsiblefortrafficforwarding?A)managementplaneB)controlplaneC)policyplaneD)dataplane答案:D解析:[單選題]8.AclientdevicefailstoseetheenterpriseSSID,butotherdevicesareconnectedtoit.Whatisthecauseofthisissue?A)ThehiddenSSIDwasnotmanuallyconfiguredontheclient.B)ThebroadcastSSIDwasnotmanuallyconfiguredontheclient.C)TheclienthasincorrectcredentialsstoredfortheconfiguredhiddenSSID.D)TheclienthasincorrectcredentialsstoredfortheconfiguredbroadcastSSID.答案:A解析:[單選題]9.whichoptiondescribeshowarouterrespondsifLSAthrottlingisconfiguredanditreceivestheidenticalLSAbeforetheintervalisset?A)THELSAISADDEDTOTHEOSPFDATABASEANDANOTIFICATIONISSENTTOTHESENDINGROUTERTOSLOWDOWNITSLSAPACKETUPDATES.B)THELSAISADDEDTOTHEOSPFDATABASE.C)THELSAISIGNORED.D)THELSAISIGNOREDANDANOTIFICATIONISSENTTOTHESENDINGROUTERTOSLOWDOWNITSLSAPACKETUPDATES答案:C解析:[單選題]10.WhichmeasuredoesISISusetoavoidsendingtrafficwithawrongMTUconfiguration?A)ISISDOESNOTPROTECTFROMMTUMISMATCH.B)MTUVALUEISCOMMUNICATEDINISISSEQUENCENUMBERPDUS(SNP),ANDISISADJACENCYISNOTESTABLISHEDIFAUMTUMISMATCHISDETECTED.C)ISISUSESPATHMTUDISCOVERYASSPECIFIEDINRFC1063.D)ISISUSESPADDINGOFHELLOPACKETSTOFRILLMTU.答案:D解析:[單選題]11.whichDHCPmessagetypedoestheDHCPserversendtoclienttoconfirmitsallocatedIPaddress?A)DHCPDISCOVERB)DHCPOFFERC)DHCPREQUESTD)DHCPACK答案:D解析:[單選題]12.AportsecurityviolationhasoccurredonaswitchportduetothemaximumMACaddresscountbeingexceeded,whichcommandmustBeconfiguredtoincrementthesecurity-violationcountandforwardanSNMPtrap?A)Switchportport-securityviolationaccessB)Switchportport-securityviolationprotectC)Switchportport-securityviolationrestrictD)Switchportport-securityviolationshutdown答案:D解析:[單選題]13.whichpathisusedbytherouterforinternettraffic?class="fr-ficfr-dibcursor-hover"A)/27B)/28C)/0D)/24答案:C解析:[單選題]14.WhichDHCPmessagetypedoestheDHCPserversendtoclienttoconfirmitsallocatedIPaddress?A)DHCPDISCOVERB)DHCPOFFERC)DHCPREQUESTD)DHCPACK答案:D解析:[單選題]15.Thedefault-informationoriginatecommandisconfiguredundertheR1OSPFconfigurationAftertestingworkstationsonVLAN20atSiteBcannotreachaDNSserverontheInternet.Whichactioncorrectstheconfigurationissue?class="fr-ficfr-dibcursor-hover"A)Addthedefault-informationoriginatecommandonR2B)Configuretheiproute8commandonR1C)ConfiguretheiproutecommandonR2D)Addthealwayskeywordtothedefault-informationoriginatecommandonR1答案:B解析:[單選題]16.WhenusingRapidPVST+,whichcommandguaranteestheswitchisalwaystherootbridgeforVLAN200?A)Spanning-treevlan200priority614440B)Spanning-treevlan200priority0C)Spanning-treevlan200priority38572422D)Spanning-treevlan200rootprimary答案:B解析:[單選題]17.WhatcommandcanyouentertoenableclientautoconfigurationoveranISATAPtunnel?A)tunnelmodeipv6ipisatapB)noipv6ndrasuppressC)ipv6ndrasuppressD)tunnelmodeipv6ip6rd答案:B解析:[單選題]18.WhichHHTPstatuscodeisthecorrectresponseforarequestwithanincorrectpasswordappliedtoaRESTAPIsession?A)HTTPStatusCode200B)HTTPStatusCode302C)HTTPStatusCode401D)HTTPStatusCode:504答案:C解析:[單選題]19.WhenawiredclientconnectstoanedgeswitchinanSDAfabric,whichcomponentdecideswhethertheclienthasaccesstothenetwork?A)control-planenodeB)IdentityServiceEngineC)RADIUSserverD)edgenode答案:B解析:[單選題]20.Whatcausesaporttobeplacedintheerr-disabledstate?A)latencyB)portsecurityviolationC)shutdowncommandissuedontheportD)nothingpluggedintotheport答案:B解析:[單選題]21.WhichcongestionqueuingmethodonCiscoIOSbasedroutersusesfourstaticqueues?A)lowlatencyB)customC)weightedfairD)Priority答案:D解析:[單選題]22.InOSPF,whichLSAtypeisresponsibleforpointingtotheASBRrouter?A)type1B)type2C)type3D)type4答案:D解析:[單選題]23.YouareconfiguringCos-to-DSCPmappingswiththreerequirementsCOS1mustbetranslatedintoAP13COS2mustbetranslatedintoAF22COS5mustbetranslatedintoEFWhichconfigurationcommandcanyouusetoimplementtherequirements?A)MLSQOSMAPCOS-DSCP014202432464856B)MLSQOSMAPCOS-DSCP012182432464856C)MLSQOSMAPCOS-DSCP012182432404856D)MLSQOSMAPCOS-DSCP012182432464856答案:A解析:[單選題]24.Toincreasetotalthroughputandredundancyonthelinksbetweenthewirelesscontrollerandswitch,thecustomerenabledLAGonthewirelesscontroller.WhichEtherChannelmodemustbeconfiguredontheswitchtoallowtheWLCtoconnect?A)ActiveB)PassiveC)OnD)Auto答案:C解析:[單選題]25.WhichnetworkallowsdevicestocommunicatewithouttheneedtoaccesstheInternet?A)/16B)/16C)/8D)/24答案:B解析:[單選題]26.WhichoutputdisplaysaJSONdatarepresentation?class="fr-ficfr-dibcursor-hover"A)OptionAB)OptionBC)OptionCD)OptionD答案:C解析:[單選題]27.AvulnerabilityassessmenthighlightedthatremoteaccesstotheswitchesispermittedusingUnsecureandunencryptedprotocolsWhichconfigurationmustbeappliedtoallowonlySecureandreliableremoteaccessfordeviceadministration?A)linevty015LoginlocalTransportinputnoneB)linevty015LoginlocalTransportinputsshC)linevty015LoginlocalTransportinputtelnetsshD)linevty015LoginlocalTransportinputall答案:B解析:[單選題]28.WhichCiscoFlexConnectstateallowswirelessusersthatareconnectedtothenetworktoContinueworkingaftertheconnectiontotheWLChasbeenlost?A)AuthenticationDown/SwitchingDownB)Authentication-Central/Switch-LocalC)Authentication-Down/Switch-LocalD)Authentication-Central/Switch-Central答案:C解析:DOWN&Local[單選題]29.WhendoesaCiscoStackWiseprimaryswitchloseitsrole?A)whenthepriorityvalueofastackmemberischangedtoahighervalueB)whenastackmemberfailsC)whenaswitchwithahigherpriorityisaddedtothestackD)whenthestackprimatyisreset答案:D解析:[單選題]30.Anofficehas8floorswithapproximately30-40usersperfloor.WhatcommandmustbeconfiguredontherouterSwitchedVirtualInterfacetouseaddressspaceefficiently?A)ipaddressB)ipaddressC)ipaddress28D)ipaddress24答案:B解析:8個(gè)子網(wǎng)，選擇B[單選題]31.WhichalgorithmisusedfortheframechecksequenceinanEthernetframe?A)MD5B)AES-256C)CRCD)SHA-1答案:C解析:哪種算法用于以太網(wǎng)幀中的幀檢查序列？[單選題]32.ANengineerisimplementingMPLSOAMtomonitortrafficwithintheMPLSdomain.WhichactionmusttheEngineerperformtopreventfrombeingforwardedbeyondtheserviceproviderdomainwhentheLSPisDown?A)DisableIPredirectsonlyonoutboundinterfacesB)ImplementthedestinationaddressfortheLSPechorequestpacketinthe127.x.y.z/8networkC)DisableIPredirectsonallingressinterfacesD)ConfigureaprivateIPaddressasthedestinationaddressoftheheadendrouterofCiscoMPLSTE.答案:C解析:[單選題]33.WhichkeychaincryptographicalgorithmissupportedbytheIS-ISroutingprotocol?A)HMAC-SHA1-12B)HMAC-MD5C)MD5D)HMAC-SHA1-20答案:B解析:[單選題]34.whichneighbor-discoverymessagetypeisusedtoverifyconnectivitytoaneighborwhenthelink-layeraddressoftheneighborisknown?A.neighborsolicitationA)NEIGHBORSOLICITATIONB)NEIGHBORADVERTISEMENTC)ROUTERADVERTISEMENTD)ROUTERSOLICITATION答案:A解析:[單選題]35.Whichunitisusedtoexpressthesignal-to-noiseratio?A)dBmB)dBC)ampD)mW答案:B解析:[單選題]36.Aresponsecodeof404isreceivedwhileusingtheRESTAPIonCiscoDNACentertoPOSTtothisURL/dna/intent/api/v1/template-programmer/projectWhatdoesthecodemean?A)TheclientmadearequestaresourcethatdoesnotexistB)TheserverhasnotimplementedthefunctionalitythatisneededtofulfilltherequestC)Therequestacceptedforprocessing,buttheprocessingwasnotcompletedD)ThePOST/PUTrequestwasfulfilledandanewresourcewascreated,informationabouttheresourceisintheresponsebody答案:A解析:[單選題]37.Howaremap-registermessagessentinaLISPdeployment?A)egresstunnelrouterstomapresolverstodeterminetheappropriateegresstunnelrouterB)ingresstunnelrouterstomapserverstodeterminetheappropriateegresstunnelrouterC)egresstunnelrouterstomapserverstodeterminetheappropriateegresstunnelrouterD)ingresstunnelrouterstomapresolverstodeterminetheappropriateegresstunnelrouter答案:C解析:出口隧道路由器映射服務(wù)器來(lái)確定合適的出口隧道路由器[單選題]38.WhichLISPinfrastructuredeviceprovidesconnectivitybetweennon-LISPsitesandLISPsitesbyreceivingnon-LISPtrafficwithaLISPsitedestination?A)PITRB)mapresolverC)mapserverD)PETR答案:A解析:[單選題]39.WhichEIGRPfeatureallowstheuseofleakmaps?A)OFFSET-LISTB)NEIGHBORC)ADDRESS-FAMILYD)STUB答案:D解析:[單選題]40.whichipv6first-hopsecurityfeatureblockstrafficsourcedfromipv6addressesthatarcoutsidetheprefixgleanedfromrouteradvertisements?A)IPV6RAGUARDB)IPV6DHCPGUARDC)IPV6SOURCEGUARDD)IPV6PREFIXGUARD答案:D解析:[單選題]41.YourNetFlowcollectorisnotworkingduetoalargeamountoftrafficenteringyournetworkwhichisdestinedtoasingleIPaddress.WhichNetFlowfeatureallowsyoutocollectthetopsourcehostsforthistrafficonthelocalrouter?A)ANETFLOWCANEXPORTFLOWSONLYTOAEXTERMALFLOWCOLLECTORB)SHOWIPCACHEFLOWC)IPACCOUNTINGD)IPFLOW-TOP-TALKERS答案:D解析:[單選題]42.HowdoTCPandUDPdifferinthewaythattheyestablishaconnectionbetweentwoendpoints?A)TCPusessynchronizationpackets,andUDPusesacknowledgmentpackets.B)UDPusesSYN,SYNACKandFINbitsintheframeheaderwhileTCPusesSYN,SYNACKandACKbitsC)UDPprovidesreliablemessagetransferandTCPisaconnectionlessprotocolD)TCPusesthethree-wayhandshakeandUDPdoesnotguaranteemessagedelivery答案:D解析:[單選題]43.Whichbenefitofimplementingadual-homedWANconnectioninsteadofasingle-homedconnectionistrue?A)Onlydual-homedconnectionssupportOSPFinconjunctionwithBGPB)Onlydual-homedconnectionssupportsplithorizonwithEIGRPC)Onlydual-homedconnectionsenbableanindividualroutertotoleratethelossofanetworklinkD)Onlydual-homedconnectionssupportrecursiverouting答案:C解析:實(shí)現(xiàn)雙主廣域網(wǎng)連接而不是單主廣域網(wǎng)連接的哪些好處是正確的？c.只有雙主連接才能使單個(gè)路由器承受網(wǎng)絡(luò)鏈路的丟失[單選題]44.WhichAPmodeallowsanengineertoscanconfiguredchannelsforrogueaccesspoints?A)SnifferB)MonitorC)BridgeD)Local答案:B解析:[單選題]45.whattechnologyallowsaPEroutertoexchangevpnv4routeswithotherPErouters?A)MPLSL3VPNB)MPLSL2VPNC)VPLSD)FRAMERELAYTOATMAAL5INTERWORKING答案:A解析:[單選題]46.Accordingtothenetworkingbestpractices,whichnetworkdeviceshouldbeusedforoptimizationandratelimiting?A)THEPROVIDERCOREDEVICEB)THEPROVIDEREDGEDEVICEC)THECUSTOMERCOREDEVICED)THECOUSTOMEREDGEDEVICE答案:D解析:[單選題]47.ArouterrunningEIGRPhaslearnedthesameroutefromtwodifferentpaths.Whichparameterdoestherouterusetoselectthebestpath?A)costB)adminstrativedistanceC)metricD)as-path答案:C解析:[單選題]48.AuserconfiguredOSPFandadvertisedtheGigabitEthernetinterfaceinOSPFBydefault,whichtypeofOSPFnetworkdoesthisinterfacebelongto?A)point-to-multipointB)point-to-pointC)broadcastD)nonbroadcast答案:C解析:[單選題]49.Thenipservercommandhasbeenconfiguredonrouter1tomakeitanNTPclientofrouter2.Whichcommandmustbeconfiguredonrouter2sothatitoperatesinserver-onlymodeandreliesonlyonitsinternalclock?class="fr-ficfr-dibcursor-hover"A)Router2(config)#ntppassiveB)Router2(config)#ntpserverC)Router2(config)#ntpmaster4D)Router2(config)#ntpserver答案:D解析:[單選題]50.WhatisprovidedbytheStealthwatchcomponentoftheCiscoCyberThreatDefensesolution?A)real-timethreatmanagementtostopDDoSattackstothecoreandaccessnetworksB)real-timeawarenessofusers,devicesandtrafficonthenetworkC)malwarecontrolD)dynamicthreatcontrolforwebtraffic答案:B解析:[單選題]51.InCiscoSD-WAN,whichprotocolisusedtomeasurelinkquality?A)OMPB)BFDC)RSVPD)IPsec答案:B解析:[單選題]52.whatistheminimumEthernetframesize?A)32bytesB)64bytesC)1024bytesD)1500bytes答案:B解析:最小以太網(wǎng)幀大小是多少？[單選題]53.AnetworkadministratorispreparingaPythonscripttoconfigureaCiscoIOSXE-baseddeviceonthenetwork.Theadministratorisworriedthatcolleagueswillmakechangestothedevicewhilethescriptisrunning.Whichoperationoftheclientmanagerinpreventcolleaguemakingchangestothedevicewhilethescriptisrunning?A)m.lock(config=?running?)B)m.lock(target=?running?)C)m.freeze(target=?running?)D)m.freeze(config=?running?)答案:B解析:[單選題]54.HowcananengineerpreventbasicreplayattacksfrompeoplewhotrytobruteforceasystemViaRESTAPI?A)UseHTTPSB)UseapasswordhashC)AddOAuthtotherequestintheAPIheaderD)AddatimestamptotherequestintheAPIheader答案:D解析:[單選題]55.AhostonanEthernetsegmenthasadifferentsubnetmaskthanthedefaultgateway.Whatcanbedonetoallowittocommunicatewithdevicesoutsideofthissubnet?A)CONFIGUREASTATICROUTEFORTHEHOSTONTHEDEFAULTGATEWAY.B)CONFIGUREASTATICARPENTRYONTHEDEFAULTGATEWAYFORTHEHOSTIPADDRESS.C)ENABLEGRATUITOUSARPONTHEHOST.D)ENABLEPROXYARPONTHEDEFAULTGATEWAY.答案:A解析:[單選題]56.TheloginmethodisconfiguredontheVTYlinesofarouterwiththeseparameters.-ThefirstmethodforauthenticationisTACACS-IfTACACSisunavailable,loginisallowedwithoutanyprovidedcredentialsWhichconfigurationaccomplishesthistask?A)R1#shrun|includeaaaaaanew-modelaaaauthenticationloginVTYgrouptacacs+noneaaasession-idcommonR1#shrun|sectionvtylinevty04password70202039485748R1#shrun|includeusernameR1#B)R1#shrun|includeaaaaaanew-modelaaaauthenticationlogindefaultgrouptacacs+aaasession-idcommonR1#shrun|sectionvtylinevty04transportinputnoneR1#C)R1#shrun|includeaaaaaanew-modelaaaauthenticationlogindefaultgrouptacacs+noneaaasession-idcommonR1#shrun|sectionvtylinevty04password70202039485748D)R1#shrun|includeaaaaaanew-modelaaaauthenticationlogintelnetgrouptacacs+noneaaasession-idcommonR1#shrun|sectionvtylinevty04R1#shrun|includeusernameR1#答案:C解析:[單選題]57.forwhichfeatureistheaddressfamily"Rtfilter"Used?A)ENHANCEDROUTEREFRESHB)MPLSVPNFILTERINGC)ROUTETARGETCONSTRAINTD)UNIFIEDMPLS答案:C解析:[單選題]58.WhichbehaviorcanbeexpectedwhentheHSRPversionsischangedfrom1to2?A)EachHSRPgroupreinitializesbecausethevirtualMACaddresshaschangedB)Nochangesoccurbecauseversion1and2usethesamevirtualMACOUIC)EachHSRPgroupreinitializesbecausethemulticastaddresshaschangedD)Nochangesoccurbecausethestandbyrouterisupgradedbeforetheactiverouter答案:A解析:[單選題]59.?HTTP/1.1204content?isreturnedwhencur-l-xDELETEcommandisissued.WhichSituationhasoccurred?A)TheobjectcouldnotbelocatedattheURIpathB)ThecommandsucceededindeletingtheobjectC)TheobjectwaslocatedattheURI,butitcouldnotbedeletedD)TheURIwasinvalid答案:B解析:[單選題]60.AtwhichlayerdoesCiscoDNACentersupportRESTcontrols?A)sessionlayerB)northboundAPIsC)EEMappletsorscriptsD)YAMLoutputfromresponsestoAPIcalls答案:B解析:[單選題]61.AnadministratormustenableTelnetaccesstoRouterXusingtherouterusernameandpasswordDatabaseforauthentication.Whichconfigurationshouldbeapplied?A)RouterX(config)#lineaux0RouterX(configline)#passwordciscoRouterX(config-line)#loginB)RouterX(config)#aaanew-modelRouterX(config)#aaaauthenticationloginauth-listlocalC)RouterX(config)#linevty04RouterX(config-line)#loginlocalRouterX(config-line)#endD)RouterX(config)#linevty04RouterX(config-line)#loginRouterX(config-line)#end答案:C解析:[單選題]62.Anorganizationsecuresitsnetworkwithmulti-factorauthenticationusinganauthenticatorapponemployeesmartphones.HowistheapplicsecuredinthecaseofAuser?ssmartphonebeinglostorstolen?A)TheapplicationrequirestheusertoenteraPINbeforeitprovidesthesecondfactorB)theapplicationchallengesauserbyrequiringanadministratorpasswordtoreactivatewhenthesmartphoneisrebootedC)TheapplicationrequiresanaadministratorpasswordtoreactivateafteraconfiguredintervalD)Theapplicationverifiesthattheuserisinaspecificlocationbeforeitprovidesthesecondfactor答案:A解析:[單選題]63.Whichsetofactionsatisfytherequirementformultifactorauthentication?A)Theuserswipesakeyfob,thenclicksthroughanemaillinkB)Theuserentersausernameandpassword,andthenclicksanotificationinanauthenticationapponamobiledeviceC)TheuserentersaPINintoanRSAtoken,andthenentersthedisplayedRSAkeyonaloginscreenD)Theuserentersausernameandpasswordandthenre-entersthecredentialsonasecondscreen答案:B解析:[單選題]64.WhatarethemaincomponentsofCiscoTrustSec?A)CiscoISEandEnterpriseDirectoryServicesB)CiscoISE.networkswitches,firewalls,androutersC)CiscoISEandTACACS+D)CiscoASAandCiscoFirepowerThreatDefense答案:C解析:[單選題]65.WhatisonecharacteristicoftheCiscoSD-Accesscontrolplane?A)ItstoresremoteroutesinacentralizeddatabaseserverB)EachrouterprocesseseverypossibledestinationandrouteC)ItallowshostmobilityonlyinthewirelessnetworkD)ItisbasedonVXLANtechnology答案:A解析:[單選題]66.whichLSAtypeisassociatedwiththedefaultrouteinatotallystubbyarea?A)INTERAREA-PREFIXLSAFORABRS(TYPE3)B)AUTONOMOUSSYSTEMEXTERNALLSA(TYPE5)C)ROUTERLSA(TYPE1)D)INTERAREA-ROUTERLSASFORASBRS(TYPE4)答案:A解析:[單選題]67.AlocalroutershowsanEBGPneighborintheActivestate.Whichstatementistrueaboutthelocalrouter?A)ThelocalrouterisattemptingtoopenaTCPsessionwiththeneighboringrouter.B)ThelocalrouterisreceivingprefixesfromtheneighboringrouterandaddingtheminRIB-IN.C)Thelocalrouterhasactiveprefixesintheforwardingtablefromtheneighboringrouter.D)ThelocalrouterhasBGPpassivemodeconfiguredfortheneighboringrouter.答案:A解析:[單選題]68.Whichdevicemakesthedecisionforawirelessclienttoroam?A)wirelessclientB)accesspointC)wirelessLANcontrollerD)WCSlocationserver答案:A解析:[單選題]69.Whatiscalculatedusingthenumericalvaluesofthetransmitterpowerlevel,cablelossandantennagain?A)SNRB)RSSIC)dBiD)EIRP答案:D解析:[單選題]70.WhichWANtopologyprovidesacombinationofsimplicityquality,andavailability?A)PartialmeshB)FullmeshC)Point-to-pointD)Hub-and-spoke答案:C解析:[單選題]71.Whendoesastackmasterloseitsrole?A)WhenthepriorityvalueofastackmemberischangedtoahighervalueB)WhenaswitchwithahigherpriorityisaddedtothestackC)WhenthestackmasterisresetD)Whenastackmemberfails答案:C解析:[單選題]72.WhichkeyboardshortcutcanyouusetoexittheSystemConfigurationDialogonaCisconetworkingdeviceandreturntoprivilegedEXECmodewithoutmakingchanges?A)Ctrl+Alt+DeleteB)Shift-EscC)Ctrl-CD)Ctrl-v答案:C解析:您可以使用哪個(gè)鍵盤快捷鍵退出Cisco網(wǎng)絡(luò)設(shè)備上的系統(tǒng)配置對(duì)話框并返回到特權(quán)執(zhí)行模式而不進(jìn)行更改？[單選題]73.Whcihresultdoesthepythoncodeachieve?A)ThecodeconvertstimetotheEpochLINUXtimeformat.B)Thecodeconvertstimetothe?year/month/day?timeformat.C)Thecodeconvertstimetotheyyyymmddrepresentation.D)Thecodeencryptsabase64decryptedpassword.答案:C解析:[單選題]74.WhatIstheprocessformovingavirtualmachinefromonehostmachinetoanotherwithnodowntime?A)HighavailabilityB)DisasterrecoveryC)livemigrationD)Multisitereplication答案:C解析:[單選題]75.WhatmakesCiscoDNACenterdifferentfromtraditionalnetworkmanagementapplicationsandtheirmanagementofnetworks?A)Itonlysupportsauto-discoveryofnetworkelementsinagreenfielddeployment.B)ItmodulardesignallowssomeonetoimplementdifferentversionstomeetthespecificneedsofanorganizationC)ItabstractspolicyfromtheactualdeviceconfigurationD)Itdoesnotsupporthighavailabilityofmanagementfunctionswhenoperatinginclustermode答案:C解析:[單選題]76.whichextendedpingIPheaderoptionallowsyoutospecifyoneormorehopsoverwhichthepacketswilltravelwithoutspecifyingthefullpath?A)VERBOSEB)LOOSEC)STRICTD)RECORD答案:B解析:[單選題]77.WhichoptiondescribestheeffectofthecommandiproutevrfDMZglobal?A)Itcreatesastaticrouteintheglobalroutingtablefor,andthenexthopisintheVRFDMZ.B)Itcreatesastaticrouteintheglobalroutingtableforandthenexthopisintheglobalroutingtable.C)ItcreatesastaticdefaultrouteintheVRFDMZ;andthenexthopisintheglobalroutingtable.D)ItcreatesastaticrouteintheVRPDMZfor,andthenexthopisintheVRFDMZ.E)ItcreatesastaticrouteintheYRFDMZfor,andthenexthopisintheglobalroutingtable.答案:E解析:[單選題]78.configurationlineinDMVPNdeployment?A)ITALLOWSTHESPOKEROUTERSTOCHANGETHENEXTHOPVALUEWHENSENDINGEIGRPUPDATESTOTHEHUBROUTER.B)ITENABLESEIGRPTODYNAMICALLYASSIGNTHENEXTHOPVALUEBASEDONTHEEIGRPDATABASE.C)ITPRESERVESTHEORIGINALNEXTHOPVALUEASLEARNEDBYTHESPOKEROUTERS.D)ITPRESERVESTHEORIGINALNEXTHOPVALUEASLEARNEDBYTHEHUBROUTERS.E)ITALLOWSTHESPOKEROUTERSTOCHANGETHENEXTHOPVALUEWHENSENDINGEIGRPUPDATESTOTHESPOKEROUTER.答案:C解析:[單選題]79.whichauthenticationtypesdoesOSPFsupport?A)MD5ANDCLEARTEXTB)CLEARTEXTONLYC)MILL(ORNOAUTHENTICATION),CLEARTEXT,ANDMD5D)MD5ONLYE)NULL(ORNOAUTHENTICATION)ANDCLEARTEXT.答案:C解析:[單選題]80.WhichtrunkingconfigurationbetweentwoCiscoswitchescancauseasecurityrisk?A)CONFIGURINGDIFFERENTNATIVEVLANSONTHESWITCHESB)CONFIGURINGDIFFERENTTRUNKMODESONTHESWITCHESC)CONFIGURINGMISMATCHEDVLANSONTHETRUNKD)DISABLINGDTPONTHETRUNKPORTSE)CONFIGURINGINCORRECTCHANNEL-GROUPSONTHESWITCHES答案:A解析:[單選題]81.WhichcommandcanyouentertodisableloggingforVTYlines?A)nologgingmonitorB)nologgingcountC)nologgingbufferD)nologgingconsoleE)nologgingtrap答案:A解析:[單選題]82.WhichtunnelingmechanismembedsanIPv4addresswithinanIPv6address?A)TeredoB)6to4C)4to6D)GREE)ISATAP答案:B解析:哪種隧道機(jī)制將IPv4地址嵌入到IPv6地址中?B6to4第2部分：多項(xiàng)選擇題，共18題，每題至少兩個(gè)正確答案,多選或少選均不得分。[多選題]83.WhichtwoimprovementsdoSIA-QueryandSIA-ReplymessagesaddtoEIGRP?(Choosetwo.)A)STUCK-IN-ACTIVECONDITIONSARESOLVEDFASTER.B)THEYPREVENTAROUTEFROMGOINGINTOTHESTUCK-IN-ACTIVESTATE,C)THEYHELPINTHELOCALIZATIONOFTHEREALFAILUREINTHENETWORK.D)THEEIGRPADJACENCYBETWEENTWONEIGHBORSNEVERGOESDOWN.答案:AC解析:[多選題]84.Refertoexhibit.WhataretworeasonsforIPSLAtrackingfailure?(Choosetwo)A)Thesource-interfaceisconfiguredincorrectlyB)Thedestinationmustbeforicmp-echoC)AroutebacktotheR1LANnetworkismissinginR2D)ThedefaultroutehaswrongnexthopIPaddressE)Thethresholdvalueiswrong答案:AC解析:[多選題]85.WhenimplementingarouterasaDHCPserver,whichtwofeaturesmustbeconfigured'?(Choosetwo)A)relayagentinformationB)databaseagentC)addresspoolD)smart-relayE)manualbindings答案:CE解析:[多選題]86.AnetworkengineerisconfiguringOSPFonarouter.TheengineerwantstopreventhavingaRouteto/16learnedviaOSPF.IntheroutingtableandconfiguresaprefixlistUsingthecommandipprefix-listOFFICEseq5deny/16.WhichtwoidenticalConfigurationcommandsmustbeappliedtoaccomplishthegoal?(Choosetwo)A)distribute-listprefixOFFICEinundertheOSPFprocessB)ipprefix-listOFFICEseq10permit/0le32C)ipprefix-listOFFICEseq10permit/0ge32D)distribute-listOFFICEoutundertheOSPFprocessE)distribute-listOFFICEinundertheOSPFprocess答案:AB解析:[多選題]87.refertotheexhibit.Whichtwooptionsaretwobenefitsofthisconfiguration?(choosetwo)A)INCREASEDSECURITYB)REDUNDANCYC)REDUCEDJITTERD)REDUCEDLATENCYE)LOADSHARING答案:BE解析:[多選題]88.WhataretwodevicerolesinCiscoSD-Accessfabric?(Choosetwo)A)coreswitchB)vBondcontrollerC)edgenodeD)accessswitchE)bordernode答案:CE解析:[多選題]89.AframethatentersaswitchfailstheFrameCheckSequence.Whichtwointerfacecountersareincremented?(Choosetwo)A)runtsB)giantsC)frameD)CRCE)inputerrors答案:DE解析:[多選題]90.Whichtwostatementsaboutstaticroutingaretrue?(Choosetwo)A)ITISHIGHLYSCALABLEASNETWORKSGROW.B)ITREQUIRESLESSBANDWIDTHANDFEWERCPUCYCLESTHANDYNAMICROUTINGPROTOCOLS.