ccna考试题库101125.docx
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ccna考试题库101125.docx
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ccna考试题库101125
QUESTION101
Refertotheexhibit.TheswitchinthegraphichasadefaultconfigurationandtheMACtableisfullypopulated.Inaddition,thisnetworkisoperatingproperly.ThegraphicrepresentsselectedheaderinformationinaframeleavinghostA.Whatcanbeconcludedfromthisinformation
A.TheMACaddressofhostAis
B.TherouterwillforwardthepacketinthisframetotheInternet.
C.Theswitchwillonlyforwardthisframetotheattachedrouterinterface.
D.AlldevicesinthisLANexcepthostAwillpassthepackettoLayer3.
QUESTION102
Whatisanappropriateuseofadefaultroute
A.toprovideroutingtoalocalwebserver
B.toprovideroutingfromanISPtoastubnetwork
C.toprovideroutingthatwilloverridetheconfigureddynamicroutingprotocol
D.toprovideroutingtoadestinationthatisnotspecifiedintheroutingtableandwhichisoutsidethelocalnetwork
QUESTION103
Refertotheexhibit.Ajuniornetworkengineerhaspreparedtheexhibitedconfigurationfile.Whattwostatementsaretrueoftheplannedconfigurationforinterfacefa0/1(Choosetwo.)
A.ThetwoFastEthernetinterfaceswillrequireNATconfiguredontwooutsideserialinterfaces.
B.Addresstranslationonfa0/1isnotrequiredforDMZDevicestoaccesstheInternet.
C.Thefa0/1IPaddressoverlapswiththespaceusedbys0/0.
D.Thefa0/1IPaddressisinvalidfortheIPsubnetonwhichitresides.
E.InternethostsmaynotinitiateconnectionstoDMZDevicesthroughtheconfigurationthatisshown.
QUESTION104
Refertotheexhibit.Tworoutershavejustbeenconfiguredbyanewtechnician.Allinterfacesareup.However,theroutersarenotsharingtheirroutingtables.Whatistheproblem
A.SplithorizonispreventingRouter2fromreceivingroutinginformationfromRouter1.
B.Router1isconfiguredforRIPversion2,andRouter2isconfiguredforRIPversion1.
C.Router1hasanACLthatisblockingRIPversion2.
D.ThereisaphysicalconnectivityproblembetweenRouter1andRouter2.
E.Router1isusingauthenticationandRouter2isnot.
QUESTION105
Amedium-sizedcompanyhasaClassCIPaddress.IthastwoCiscoroutersandonenon-Ciscorouter.AllthreeroutersareusingRIPversion1.Thecompanynetworkisusingtheblockof/24.ThecompanyhasdecideditwouldbeagoodideatosplitthenetworkintothreesmallersubnetsandcreatetheoptionofconservingaddresseswithVLSM.Whatisthebestcourseofactionifthecompanywantstohave
40hostsineachofthethreesubnets
A.ConvertalltherouterstoEIGRPanduse/27,/27,and
/27asthenewsubnetworks.
B.MaintaintheuseofRIPversion1anduse/27,/27,andasthenewsubnetworks.
C.ConvertalltherouterstoEIGRPanduse/26,/26,andasthenewsubnetworks.
D.ConvertalltherouterstoRIPversion2anduse/26,/26,andasthenewsubnetworks.
E.ConvertalltherouterstoOSPFanduse/28,/28,and
/28asthenewsubnetworks.
F.Convertalltherouterstostaticroutesanduse/28,/28,and
QUESTION106
Refertotheexhibit.WhyhasthisswitchnotbeenelectedtherootbridgeforVLAN1
A.Ithasmorethanoneinterfacethatisconnectedtotherootnetworksegment.
B.ItisrunningRSTPwhiletheelectedrootbridgeisrunningspanningtree.
C.IthasahigherMACaddressthantheelectedrootbridge.
D.IthasahigherbridgeIDthantheelectedrootbridge.
QUESTION107
Refertotheexhibit.AttheendofanRSTPelectionprocess,whichaccesslayerswitchportwillassumethediscardingrole
A.Switch3,portfa0/1
B.Switch3,portfa0/12
C.Switch4,portfa0/11
D.Switch4,portfa0/2
E.Switch3,portGi0/1
F.Switch3,portGi0/2
QUESTION108
Refertotheexhibit.HowmanypathscantheEIGRProutingprocessusetoforwardpacketsfromHQ_Routertoaneighborrouter
A.twoequal-costpaths
B.twounequal-costpaths
C.threeequal-costpaths
D.threeunequal-costpaths
E.fourequal-costpaths
F.fourunequal-costpaths
QUESTION109
Selecttheactionthatresultsfromexecutingthesecommands.
Switch(config-if)#switchportport-security
Switch(config-if)#switchportport-securitymac-addresssticky
A.AdynamicallylearnedMACaddressissavedinthestartup-configurationfile.
B.AdynamicallylearnedMACaddressissavedintherunning-configurationfile.
C.AdynamicallylearnedMACaddressissavedintheVLANdatabase.
D.StaticallyconfiguredMACaddressesaresavedinthestartup-configurationfileifframesfromthataddressarereceived.
E.StaticallyconfiguredMACaddressesaresavedintherunning-configurationfileifframesfromthataddressarereceived.
QUESTION110
Refertotheexhibit.Thefollowingcommandsareexecutedoninterfacefa0/1of2950Switch.
2950Switch(config-if)#switchportport-security
2950Switch(config-if)#switchportport-securitymac-addresssticky
2950Switch(config-if)#switchportport-securitymaximum1
TheEthernetframethatisshownarrivesoninterfacefa0/1.Whattwofunctionswilloccurwhenthisframeisreceivedby2950Switch(Choosetwo.)
A.TheMACaddresstablewillnowhaveanadditionalentryoffa0/1
B.OnlyhostAwillbeallowedtotransmitframesonfa0/1.
C.Thisframewillbediscardedwhenitisreceivedby2950Switch.
D.Allframesarrivingon2950Switchwithadestinationofwillbeforwardedoutfa0/1.
E.HostsBandCmayforwardframesoutfa0/1butframesarrivingfromotherswitcheswillnotbeforwardedoutfa0/1.
F.OnlyframesfromsourcethefirstlearnedMACaddressof2950Switch,willbeforwardedoutfa0/1.
QUESTION111
Refertotheexhibit.Some2950seriesswitchesareconnectedtotheconferenceareaofthecorporateheadquartersnetwork.Theswitchesprovidetwotothreejacksperconferenceroomtohostlaptopconnectionsforemployeeswhovisittheheadquartersoffice.Whenlargegroupsofemployeescomefromotherlocations,thenetworkadministratoroftenfindsthathubshavebeenconnectedtowalljacksintheconferenceareaalthoughtheportsontheaccesslayerswitcheswerenotintendedtosupportmultipleworkstations.
Whatactioncouldthenetworkadministratortaketopreventaccessbymultiplelaptopsthroughasingleswitchportandstillleavetheswitchfunctionalforitsintendeduse
A.ConfigurestaticentriesintheswitchMACaddresstabletoincludetherangeofaddressesusedbyvisitingemployees.
B.ConfigureanACLtoallowonlyasingleMACaddresstoconnecttotheswitchatonetime.
C.Usethemac-address-table1globalconfigurationcommandtolimiteachporttoonesourceMACaddress.
D.ImplementPortSecurityonallinterfacesandusetheport-securitymaximum1commandtolimitportaccesstoasingleMACaddress.
E.ImplementPortSecurityonallinterfacesandusetheport-securitymac-addressstickycommandtolimitaccesstoasingleMACaddress.
F.ImplementPortSecurityatglobalconfigurationmodeandusetheport-securitymaximum1commandtoalloweachswitchonlyoneattachedhub.
QUESTION112
RunningbothIPv4andIPv6onaroutersimultaneouslyisknownaswhat
A.4to6routing
B.6to4routing
C.binaryrouting
D.dual-stackrouting
E.NextGenrouting
QUESTION113
WhatarethreeIPv6transitionmechanisms(Choosethree.)
A.6to4tunneling
B.VPNtunneling
C.GREtunneling
D.ISATAPtunneling
E.PPPtunneling
F.Teredotunneling
QUESTION114
IdentifythefourvalidIPv6addresses.(Choosefour.)
A.:
:
B.:
:
192:
168:
0:
1
C.2000:
:
D.2001:
3452:
4952:
2837:
:
E.2002:
c0a8:
101:
:
42
F.2003:
dead:
beef:
4dad:
23:
46:
bb:
101
QUESTION115
WhichprotocolshouldbeusedtoestablishasecureterminalconnectiontoaremotenetworkdeviceSelectthebestresponse.
A.ARP
B.SSH
C.Telnet
D.WEP
E.SNMPv1
F.SNMPv2
QUESTION116
Refertotheexhibit.AnetworkadministratorwantsSwitch3tobetherootbridge.WhatcouldbedonetoensureSwitch3willbetheroot
A.ConfiguretheIPaddressonSwitch3tobehigherthantheIPaddressesofSwitch1andSwitch2.
B.ConfigurethepriorityvalueonSwitch3tobehigherthanthepriorityvaluesofSwitch1andSwitch2.
C.ConfiguretheBIDonSwitch3tobelowerthantheBIDsofSwitch1andSwitch2.
D.ConfiguretheMACaddressonSwitch3tobehigherthantheSwitch1andSwitch2MACaddresses.
E.ConfigurealoopbackinterfaceonSwitch3withanIPaddresslowerthananyIPaddressonSwitch1andSwitch2.
QUESTION117
WhatisthemaximumdataratespecifiedforIEEEWLANs
A.10Mbps
B.11Mbps
C.54Mbps
D.100Mbps
QUESTION118
Howdoesusingtheservicepasswordencryptioncommandonarouterprovideadditionalsecurity
A.byencryptingallpasswordspassingthroughtherouter
B.byencryptingpasswordsintheplaintextconfigurationfile
C.byrequiringentryofencryptedpasswordsforaccesstothedevice
D.byconfiguringanMD5encryptedkeytobeusedbyroutingprotocolstovalidateroutingexchanges
E.byautomaticallysuggestingencryptedpasswordsforuseinconfiguringtherouter
QUESTION119
Refertotheexhibit.WhenrunningOSPF,WhatwouldcauserouterAnottoformanadjacencywithrouterB
A.Theloopbackaddressesareondifferentsubnets.
B.Thevalueofthedeadtimersontherouteraredifferent.
C.Routesummarizationisenabledonbothrouters.
D.TheprocessindentifieronrouterAisdifferentthantheprocessidentifieronrouterB.
QUESTION120
Refertotheexhibit.Whatstatementistrueoftheconfigurationforthisnetwork
A.Theconfigurationthatisshownprovidesinadequateoutsideaddressspacefortranslationofthenumberofinsideaddressesthataresupported.
B.BecauseoftheaddressingoninterfaceFast
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