CCNACCNPCCIE模拟试题.docx

CCNACCNPCCIE模拟试题.docx

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CCNACCNPCCIE模拟试题

CCNA、CCNP、CCIE模拟试题

a.smtpb.stpc.ftpd.tele.f.pop3

2.oneofthetraineesassignedtoyouwanttoknowwhichservicesusetcp.whatcanyou___him?

（selectthreeoptions.）

a.dhcpb.smtpc.snmpd.ftpe.f.tftp

3.whichofthefollowingworkmaskswouldyouusetoreduceanywastageofipaddressesinpoint-to-pointwanlinksonaworkthatsupportsvlsm?

a./38b./30c./27d./23e./18

4.howwouldyouconfigurearoutertoavoidsituationssuchassplithorizonissueshamperingroutingupdatesonaframerelaywork?

a.configureaseparatesub-interfaceforeachpvcwithauniquedlciandsubassignedtothesubinterface.b.configureeachframerelaycircuitasapoint-to-pointlinetosupportmulticastandbroadcasttraffic.c.configureonesub-interfacetodisperseintomultiplepvcconnectionstomultipleremoterouterinterfaces.d.configureasmanyaspossiblesub-interfacesonthesamesub.

5.withregardtoisdn,whichofthefollowingaretrue?

（chooseallthatapply.）

a.legacyddrcanuseportinformationtodefineinterestingtraffic.b.legacyddrcanconfiguremultipledialerconfigurationsonthesameinterface.c.legacyddrcanuseaclstodefineinterestingtraffic.d.hdlcorpppcanbeusedtoencapsulateisdndchannelinformation.e.thebriinterfacesonisdnrouterswithdialerprofilesconfiguredcannotbelongtomultipledialerpools.f.dialerprofilescannotuseaclstodefineinterestingtraffic.

6.whichofthefollowingisacharacteristicoflink-stateprotocols?

a.aworktopologychangegeneratesanupdatethatisbroadcasttoeveryrouteronthework.b.theperiodicroutingupdateintervalisslightlydifferentineachrouteronasub.c.eachroutercreatesaroutingtablethatonlyincludesitsdirectlyconnectedneighbors.d.link-stateprotocolssendroutingupdatesonlywhenthereisachangeintheworktopology.

7.whatisthetermassociatedwithsynchronizingtheroutingtablesafteratopologychangeours?

a.floodingb.broadcastingc.convergenced.summarization

8.whichofthefollowingmustbedeterminedfirstbytherouterinordertoroutethedata?

a.thedistancemetricofthedatab.thesourceaddressofthedatac.whichroutingprotocolisusedbythedatad.whethertheprotocolsuiteofthedataisactive

9.youareatechnicianatabc.abchasthesub/maskof172.29.100.0/26setasideforsmallremotelocations.eachlocationwillhave5ipdevicesconnectedtothework.whichvlsmmaskwillprovidetheminimumnumberofhostsyourequire?

a./27b./28c./29d./30e./31

10.youareatraineetechnicianatabc.yourinstructorshowsyouthefollowingroutesummarizationentry:

192.168.134.0/22yourinstructorwantstoknowhowmanyclasscaddressesarecontainedinthissummarization.whatwouldyourreplybe?

a.1b.2c.4d.8e.16

11.whichmandenablesanetherchannelbundleonacatalyst2900xlswitch?

a.portgroupb.setportchannelonc.portetherchannelenabled.setetherchannelportenable

12.whichtwostatementsaboutdynamicvlansaretrue?

（choosetwo）

a.eachswitchportisassignedtoaspecificvlan.b.dynamicvlansrequireavlanmembershippolicyserver.c.devicesareinthesamevlanregardlessofwhichporttheyattachto.d.dynamicvlanassignmentaremadethroughthemandinterface.

13.whichstatementiscorrectabout802.1qtrunking?

（selectallthatapply）

a.bothswitchesmustbeinthesamevtpdomain.b.theencapsulationtypeofbothendsofthetrunkdoesnothavetomatch.c.thenativevlanonbothendsofthetrunkmustbevlan1.d.802.1qtrunkingcanonlybeconfiguredonalayer2port.e.in802.1qtrunking,allvlanpacketsaretaggedonthetrunklink,exceptthenativevlan.

14.youneedtotakeadvantageoffastetherports.whichtwoactionsavoidconfigurationproblemsthatcausetheporttobeautomaticallydisabled?

（choosetwo）

a.allowsomeportsinachanneltobedisabled.b.configuretheportsinachannelasdynamicvlanports.c.configureallportsinachanneltooperateatthesamespeedandduplexmode.d.assignallportsinachanneltothesamevlanorconfigurethemastrunkports.

15.whatisthecauseofjitter?

a.variablequeuedelaysb.packetdropsc.transmittingtoomanysmallpacketsd.pression

16.regardingdhcp,dhcprelayanddhcpserveraremutuallyexclusive.

a.noneofthechoices.b.truec.falseonlyforcertainiosversiond.falsee.falseonlyforiosversionbelowv10

17.alapdaddressfieldcanbe1or2byteslong.

a.trueb.falsec.trueonlyintheusd.trueonlyinasiae.trueonlyineurope

18.whichofthefollowingarevalidfunctionsofthelockdtemodemattribute（chooseallthatapply）?

a.disableuart.b.enableuart.c.locksthedataspeedbetweentheputermotherboardandthers232port.d.locksthedataspeedbetweenthemodemandthedtedevice.

19.whichofthefollowingarenotthevalidtypesofatmaddresses（chooseallthatapply）?

a.db.gctc.bspd.icde.nsapf.aed

20.whichofthefollowingarenotthevalidtypesofx.25plppacketfields（chooseallthatapply）?

a.userdatab.lcic.gfid.ptie.noneofthechoices.

21.youareatechnicianatabc..yournewlyappointedabctraineewantstoknowwhatthesimilaritiesbetweentopologydiagramsandworkconfigurationtablesare.whatwouldyourreplybe?

（chooseallthatapply.）

a.bothsharefewponents.b.bothsharemanyofthesameponents.c.bothdefinephysicalmemoryponents.d.bothareusedfortroubleshooting.e.bothuselinesandsymbolstorepresentworkponents.

22.youareatechnicianatabc..yournewlyappointedabctraineewantstoknowwhatthedefaultactionfortheoutputofdebugandsystemerrormessagesis.whatwouldyourreplybe?

a.outputgoestotheremoteconsoleifloggingisoff.b.outputissenttotheconsoleterminal.c.errorloggingautomaticallyinvokesdebugoutputtothedesignatedtftpserver.d.outputconfigurationrequiresatftpservertowritefilese.outputiswrittentoasyslogserver.

23.youaretheworkadministratoratabc..abchasaswitchedwork.youwanttocontrolthedesignationofthespanning-treerootbridgeintheabcwork.whatshouldyoudo?

a.byenablinguplink-fastontheportsofthedesiredswitch.b.byloweringthebridgepriorityonthedesiredswitch.c.bysettingalowermacaddressonthedesignatedswitch.d.byraisingthebridgeidononeswitch.

24.youareatechnicianatabc.youreceiveareportfromseveralabcuserswhoplainthattheygetslowresponseswhensendingandreceivingemail,especiallywhenbrowsingtheinter.youinvestigatetheplaintbycheckingtheoutputofapingmandissuedfromherputerandfindthatitindicatesintermittedsuessandfailuresmessages,whenattemptingtocontacttheemailserver.atracerttothecorporateintergatewayroutershowshighlatencyandoasionaltimeoutmessages.whatwouldbethemosteffectivetroubleshootingapproachifyouaretodeterminethecauseoftheslowresponsetime?

a.bottom-upapproachb.randomaessapproachc.divideandconquerapproachd.top-downapproache.top-downrule-outapproach

25.youareatechnicianatabc..yournewlyappointedabctraineewantstoknowwhatfeaturesmakeospfmoresuitablethanrpinlargeworkinstallations.whatwouldyourreplybe?

（chooseallthatapply.）

a.diffusingupdatealgorithmb.nohopcountlimitationc.higherroutingupdateoverheadd.fasterconvergencee.lowerroutingupdateoverhead

26.youaretheworkadministratoratabc.youaretroubleshootingaworkproblem.youwanttotracetheroutetoaunixworkstationthatyouwanttoreachthroughtheinter.however,traceroutedoesnotwork.currently,thereisaninboundaess-listappliedtotheserialinterfaceonrouter1.anentryintheaess-liststates"aess-list101permittcpanyany".whataess-listentrymayyouneedtobeaddedtotheaess-listinordertogettraceroutetowork?

a.aess-list101permitudpanyanyb.aess-list101permiticmpanyanytime-exceededaess-list101permiticmpanyanyport-unreachablec.aess-list101permiticmpanyanytime-exceededaess-list101permiticmpanyany-unreachabled.aess-list101permiticmpanyanyechoaess-list101permiticmpanyany-unreachablee.aess-list101permitudpanyanyaess-list101permiticmpanyanyprotocol-unreachable

27.whatdoesthebgpbackdoormanddo?

a.itchangesthedistanceofanibgprouteto20.b.itchangesthedistanceofanebgprouteto200.c.itchangesthedistanceofanigprouteto20.d.itdoesnoteffectanychangesindistanceoftheroute.e.itchangesthedistanceofanigrprouteto200.

28.whichofthefollowingdnsresourcerecordsisnotvalid?

a.nsb.ptrc.mxd.fqdne.a

29.whichofthefollowingfeaturesisprovidedbyripv2thatwerepreviouslynotpossiblewithripv1?

（chooseallthatapply.）

a.classlessroutingandsplit-horizon.b.poisonreverseandupdatingtomulticastaddresses.c.poisonreverseandclasslessrouting.d.classlessroutingandupdatingtomulticastaddresses.e.routetagandclasslessrouting.

30.whichofthefollowingstatementsisvalidwhentakingcustomqueuingintoaount?

a.customqueuinghastheabilitytorestrictaparticulartypeoftraffictoagivenbandwidthnotmatterwhatisloadislikeonthatlink.b.customqueuinglooksatgroupsofpacketsfromthesimilarsource-destinationpairs.c.customqueuingwillnotproceedtoanextqueueunlessthecurrentqueueisempty.d.customqueuingcanpreventonetypeoftrafficfromdominatingabusylink.

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