第1題Whatarethreecommonproblemswithalargenetwork?(Choosethree.)AtoofewbroadcastsBperformancedegradationCsecurityissuesDlimitedmanagementresponsibilityEhostidentificationFprotocolcompatibility正確答案：BCE第2題Whataretwocharacteristicsofpeer-to-peernetworks?(Choosetwo.)AscalableBonewaydataflowCdecentralizedresourcesDcentralizeduseraccountsEresourcesharingwithoutadedicatedserver正確答案：CE第3題Asmallhomenetworkhasbeeninstalledtointerconnectthreecomputerstogetherforgamingandfilesharing.Whattwopropertiesrepresentthisnetworktype?(Choosetwo.)AUseraccountsarecentralized.BSecurityisdifficulttoenforce.CSpecializedoperatingsystemsoftwareisrequired.DFilepermissionsarecontrolledbyasinglecomputer.EAcomputerthatrespondstoafilesharingrequestisfunctioningasaserver.正確答案：BE第4題Whatarethreepropertiesofpeer-to-peerapplications?(Choosethree.AactsasbothaclientandserverwithinthesamecommunicationBrequirescentralizedaccountadministrationChybridmodeincludesacentralizeddirectoryoffilesDcanbeusedinclient-servernetworksErequiresadirectphysicalconnectionbetweendevicesFcentralizedauthenticationisrequired正確答案：ACD第5題WhichthreestatementsbestdescribeaLocalAreaNetwork(LAN)?(Choosethree.)AALANisusuallyinasinglegeographicalarea.BThenetworkisadministeredbyasingleorganization.CTheconnectionbetweensegmentsintheLANisusuallythroughaleasedconnection.DThesecurityandaccesscontrolofthenetworkarecontrolledbyaserviceprovider.EALANprovidesnetworkservicesandaccesstoapplicationsforuserswithinacommonorganization.FEachendofthenetworkisgenerallyconnectedtoaTelecommunicationServiceProvider(TSP).正確答案：ABE第6題Anetworkadministratorhasbeenaskedtoprovideagraphicrepresentationofexactlywherethecompanynetworkwiringandequipmentarelocatedinthebuilding.Whatisthistypeofdrawing?AlogicaltopologyBphysicaltopologyCcablepathDwiringgridEaccesstopology第7題Whatistrueconcerningphysicalandlogicaltopologies?AThelogicaltopologyisalwaysthesameasthephysicaltopology.BPhysicaltopologiesareconcernedwithhowanetworktransfersframes.CPhysicalsignalpathsaredefinedbyDataLinklayerprotocols.DLogicaltopologiesconsistofvirtualconnectionsbetweennodes第8題Whatdeviceisconsideredanintermediarydevice?AIPphoneBlaptopCprinterDswitch第9題Refertotheexhibit.Whichthreelabelscorrectlyidentifythenetworktypesforthenetworksegmentsthatareshown?(Choosethree.)ANetworkA--WANBNetworkB--WANCNetworkC--LANDNetworkB--MAN城域網ENetworkC--WANFNetworkA--LAN正確答案：BCF第10題Refertotheexhibit.Whichlogicaltopologydescribestheexhibitednetwork?

Astar

BringCpoint-to-pointDmulti-access第11題Refertotheexhibit.Whichlogicaltopologybestdescribestheexhibitednetwork?AstarBringCpoint-to-pointDbusEmesh第12題Refertotheexhibit.Whichsetofdevicescontainsonlyenddevices?AA,C,DBB,E,G,HCC,D,G,H,I,JDD,E,F,H,I,JEE,F,H,I,J正確答案：E第13題Refertotheexhibit.Whattypeofnetworkisshown?AWANBMANCLANDWLAN第14題Refertotheexhibit.WhichtermcorrectlyidentifiesthedevicetypethatisincludedintheareaB?AsourceBendCtransferDintermediary第15題Refertotheexhibit."CellA"atIPaddress4hasestablishedanIPsessionwith"IPPhone1"atIPaddress03.Baseduponthegraphic,whichdevicetypebestdescribesthefunctionofwirelessdevice"CellA?"AthedestinationdeviceBanenddeviceCanintermediatedeviceDamediadevice第16題Whichcharacteristiccorrectlyreferstoenddevicesinanetwork?AmanagedataflowsBoriginatedataflowCretimeandretransmitdatasignalsDdeterminepathwaysfordata第1題WhichthreeaddressesbelongtothecategoryofpublicIPaddresses?(Choosethree.)ABC9DE0F7正確答案：BCF第2題WhichthreeIPaddressesareprivate?(Choosethree.)AB0CD0E9F正確答案：BCD第3題Whichtwoprotocolsareusedtocontrolthetransferofwebresourcesfromawebservertoaclientbrowser?(Choosetwo.)AASPBFTPCHTMLDHTTPEHTTPSFIP正確答案：DE第4題WhatthreeprotocolsoperateattheApplicationlayeroftheOSImodel?(Choosethree.)AARPBDNSCPPPDSMTPEPOPFICMP正確答案：BDE第5題Anetworkadministratorisdesigninganetworkforanewbranchofficeoftwenty-fiveusers.Whataretheadvantagesofusingaclient-servermodel?(Choosetwo.)AcentralizedadministrationBdoesnotrequirespecializedsoftwareCsecurityiseasiertoenforceDlowercostimplementationEprovidesasinglepointoffailure正確答案：AC第6題Whataretwoformsofapplicationlayersoftware?(Choosetwo.)AapplicationsBdialogsCrequestsDservicesEsyntax正確答案：AD第7題WhichtwolayersoftheOSImodelhavethesamefunctionsastheTCP/IPmodelNetworkAccessLayer?(Choosetwo.)ANetworkBTransportCPhysicalDDataLinkESession正確答案：CD第8題Whataretwofunctionsofencapsulation?(Choosetwo.)tracksdelaybetweenenddevicesAenablesconsistentnetworkpathsforcommunicationBallowsmodificationoftheoriginaldatabeforetransmissionCidentifiespiecesofdataaspartofthesamecommunicationDensuresthatdatapiecescanbedirectedtothecorrectreceivingenddevice正確答案：CD第9題Selectthestatementsthatarecorrectconcerningnetworkprotocols.(Choosethree.)AdefinethestructureoflayerspecificPDU'sBdictatehowtoaccomplishlayerfunctionsCoutlinethefunctionsnecessaryforcommunicationsbetweenlayersDlimittheneedforhardwarecompatibilityErequirelayerdependentencapsulationsFeliminatestandardizationamongvendors正確答案：ACE第10題Whichstatementscorrectlyidentifytheroleofintermediarydevicesinthenetwork?(Choosethree.)AdeterminepathwaysfordataBinitiatedatacommunicationsCretimeandretransmitdatasignalsDoriginatetheflowofdataEmanagedataflowsFfinalterminationpointfordataflow正確答案：ACE第11題WhichOSIlayerusestheheaderinformationtoreassemblethedatasegmentsintostreams?AapplicationlayerBnetworklayerCpresentationlayerDsessionlayerEtransportlayer正確答案：E第12題WhichOSIlayermanagesdatasegments?AapplicationlayerBpresentationlayerCsessionlayerDtransportlayer第13題Duringtheencapsulationprocess,whatidentifiersareaddedatthetransportlayer?AsourceanddestinationIPaddressesBsourceanddestinationMACaddressesCsourceanddestinationportnumbersDsourceanddestinationchannelidentifiers第14題

WhenconnectionlessprotocolsareimplementedatthelowerlayersoftheOSImodel,whatisusuallyusedtoacknowledgethatthedatawasreceivedandtorequesttheretransmissionofmissingdata?AIPBUDPCEthernetDaconnectionlessacknowledgementEanupper-layer,connection-orientedprotocolorservice正確答案：E第15題WhichOSIlayersoffersreliable,connection-orienteddatacommunicationservices?AapplicationBpresentationCsessionDtransportEnetwork第16題Convertthebinarynumber10111010intoitshexadecimalequivalent.Selectthecorrectanswerfromthelistbelow.A85B90CBADA1EB3F1C第17題HowmanybitsmakeupanIPv4address?A128B64C48D32第18題GiventheIPaddressandsubnetmaskof424,whichofthefollowingwoulddescribethisaddress?AThisisauseablehostaddress.BThisisabroadcastaddress.CThisisanetworkaddress.DThisisnotavalidaddress.第19題Howdoestheapplicationlayeronaserverusuallyprocessmultipleclientrequestforservices?AceasesallconnectionstotheserviceBdeniesmultipleconnectionstoasingledaemonCsuspendsthecurrentconnectiontoallowthenewconnectionDusessupportfromlowerlayerfunctionstodistinguishbetweenconnectionstotheservice第20題WhatistheroleoftheOSIapplicationlayer?AprovidessegmentationofdataBprovidesencryptionandconversionofdataCprovidestheinterfacebetweentheapplicationsoneitherendofthenetworkDprovidescontrolofallthedataflowingbetweenthesourceanddestinationdevices第21題WhatapplicationlayerprotocoldescribestheservicesthatareusedforfilesharinginMicrosoftnetworks?ADHCPBDNSCSMBDSMTPETelnet第22題WhichlayeroftheOSImodelsuppliesservicesthatallowusertointerfacewiththenetwork?AphysicalBsessionCnetworkDpresentationEapplicationFtransport正確答案：E第23題AscomparedtoSSH,whatistheprimarydisadvantageoftelnet?AnotwidelyavailableBdoesnotsupportencryptionCconsumesmorenetworkbandwidthDdoesnotsupportauthentication第24題Whichapplicationlayerprotocolscorrectlymatchacorrespondingfunction?(Choosetwo.)ADNSdynamicallyallocatesIPaddressestohostsBHTTPtransfersdatafromawebservertoaclientCPOPdeliversemailfromtheclienttotheserveremailserverDSMTPsupportsfilesharingETelnetprovidesavirtualconnectionforremoteaccess第25題WhatistheautomatedservicethatmatchesresourcenameswiththerequiredIPaddress?AHTTPBSSHCFQDNDDNSETelnetFSMTP第26題WhatisthepurposeofresourcerecordsinDNS?AtemporarilyholdsresolvedentriesBusedbytheservertoresolvenamesCsentbytheclienttoduringaqueryDpassesauthenticationinformationbetweentheserverandclient第27題Whatapplicationlayerprotocoliscommonlyusedtosupportforfiletransfersbetweenaclientandaserver?AHTMLBHTTPCFTPDTelnet第28題WhatistheproperorderofthelayersoftheOSImodelfromthehighestlayertothelowestlayer?Aphysical,network,application,datalink,presentation,session,transportBapplication,physical,session,transport,network,datalink,presentationCapplication,presentation,physical,session,datalink,transport,networkDapplication,presentation,session,transport,network,datalink,physicalEpresentation,datalink,session,transport,network,physical,application第29題WhatisthepurposeoftheTCP/IPNetworkAccesslayer?ApathdeterminationandpacketswitchingBdatapresentationCreliability,flowcontrol,anderrordetectionDnetworkmediacontrolEthedivisionofsegmentsintopackets第30題Duringtheencapsulationprocess,whatoccursatthedatalinklayer?ANoaddressisadded.BThelogicaladdressisadded.CThephysicaladdressisadded.DTheprocessportnumberisadded.第31題Whatcanbeidentifiedbyexaminingthenetworklayerheader?AthedestinationdeviceonthelocalmediaBthedestinationhostaddressCthebitsthatwillbetransferredoverthemediaDthesourceapplicationorprocesscreatingthedata第32題Whichlayerencapsulatesthesegmentintopackets?AphysicalBdatalinkCnetworkDtransport第33題WhatistheprimarypurposeofLayer4portassignment?toidentifydevicesonthelocalmediaAtoidentifythehopsbetweensourceanddestinationBtoidentifytotheintermediarydevicesthebestpaththroughthenetworkCtoidentifythesourceanddestinationenddevicesthatarecommunicatingDtoidentifytheprocessesorservicesthatarecommunicatingwithintheenddevices第34題WhatisaPDU?AcorruptionofaframeduringtransmissionBdatareassembledatthedestinationCretransmittedpacketsduetolostcommunicationDalayerspecificencapsulation第35題Whatisaprimaryfunctionofthetrailerinformationaddedbythedatalinklayerencapsulation?AsupportserrordetectionBensuresorderedarrivalofdataCprovidesdeliverytocorrectdestinationDidentifiesthedevicesonthelocalnetworkEassistsintermediarydeviceswithprocessingandpathselection第36題Refertotheexhibit.Theheadersaddedateachlayerareshown.Whichlayeraddsthedestinationandsourceprocessnumberstoensurethatdataisdeliveredtothecorrectapplication?

Aphysicallayer

BdatalinklayerCnetworklayerDtransportlayer第37題Refertotheexhibit.ThecommandthatisshownwasissuedonaPC.WhatdoestheIPaddressrepresent?AIPaddressofthehostBdefaultgatewayofthehostCIPaddressofthehomepageforthehostDprimarydomainnameserverforthehostEIPaddressofthewebsiteresolver1.mooki.local第38題Refertotheexhibit.WhywouldtheresponseshownbedisplayedafterissuingthecommandpingonaPC?ATheIPsettingsarenotproperlyconfiguredonthehost.

BInternetProtocolisnotproperlyinstalledonthehost.

CThereisaproblematthephysicalordatalinklayer.

DThedefaultgatewaydeviceisnotoperating.

EArouteronthepathtothedestinationhosthasgonedown.

第39題Refertotheexhibit.Whichnetworkingtermdescribesthedatainterleavingprocessrepresentedinthegraphic?ApipingBPDUCstreamingDmultiplexingEencapsulation正確答案：ETEST3第1題WhichtypeofmediaisimmunetoEMIandRFI?(Choosetwo.)A10Base-TB10Base-2C10Base-5D100Base-FXE100BaseTXF1000BaseLX正確答案：DF第2題WhataretwocommonmethodsforsettingaUTPEthernetporttoMDIorMDIXoperation?(Choosetwo.)A10Base-TB10Base-2C10Base-5D100Base-FXE100BaseTXF1000BaseLX正確答案：DE第3題Whatmakesfiberpreferabletocoppercablingforinterconnectingbuildings?(Choosethree.)AgreaterdistancespercablerunBlowerinstallationcostClimitedsusceptibilitytoEMI/RFIDdurableconnectionsEgreaterbandwidthpotentialFeasilyterminated正確答案：ACE第4題Whatarethreemeasuresofdatatransfer?(Choosethree.)AgoodputBfrequencyCamplitudeDthroughputEcrosstalkFbandwidth正確答案：ADF第5題Whichcharacteristicsdescribefiberopticcable?AItisnotaffectedbyEMIorRFI.BEachpairofcablesiswrappedinmetallicfoil.CItcombinesthetechniqueofcancellation,shieldingandtwistingtoprotectdata.DIthasamaximumspeedof100Mbps.EItisthemostexpensivetypeofLANcabling.正確答案：AE第6題ToestablishaconsoleconnectionfromacomputertoaCiscorouter,whichcablewiringoptionwouldbeused?AcrossovercableBstraightthroughcableCrollovercableDV.35cable第7題Whatdoestheterm"attenuation"meanindatacommunication?AlossofsignalstrengthasdistanceincreasesBtimeforasignaltoreachitsdestinationCleakageofsignalsfromonecablepairtoanotherDstrengtheningofasignalbyanetworkingdevice第8題Anetworkadministratorisrequiredtousemediainthenetworkthatcanrunupto100metersincablelengthwithoutusingrepeaters.Thechosenmediamustbeinexpensiveandeasilyinstalled.Theinstallationwillbeinapre-existingbuildingwithlimitedcablingspace.Whichtypeofmediawouldbestmeettheserequirements?ASTPBUTPCcoaxialDsingle-modefiberEmultimodefiber第9題WhatcharacteristicofUTPcablehelpsreducetheeffectsofinterference?AthemetalbraidingintheshieldingBthereflectivecladdingaroundcoreCthetwistingofthewiresinthecableDtheinsulatingmaterialintheouterjacket第10題Whatisconsideredabenefitofwirelessasamediachoice?AmorehostmobilityBlowersecurityrisksCreducedsusceptibilitytointerferenceDlessimpactofthesurroundingsontheeffectivecoveragearea第11題Whatisapossibleeffectofimproperlyapplyingaconnectortoanetworkcable?ADatawillbeforwardedtothewrongnode.BDatatransmittedthroughthatcablemayexperiencesignalloss.CAnimpropersignalingmethodwillbeimplementedfordatatransmittedonthatcable.DTheencodingmethodfordatasentonthatcablewillchangetocompensatefortheimproperconnection.第12題InLANinstallationswherepotentialelectricalhazards（電力危險）orelectromagneticinterference（電磁干擾）maybepresent,whattypeofmediaisrecommendedforbackbonecabling（主干布線）?AcoaxBfiberCCat5eUTPDCat6UTPESTP第13題WhatisaprimaryroleofthePhysicallayerintransmittingdataonthenetwork?AcreatethesignalsthatrepresentthebitsineachframeontothemediaBprovidephysicaladdressingtothedevicesCdeterminethepathpacketstakethroughthenetworkDcontroldataaccesstothemedia第14題Withtheuseofunshieldedtwisted-paircopperwireinanetwork,whatcausescrosstalkwithinthecablepairs?AthemagneticfieldaroundtheadjacentpairsofwireBtheuseofbraidedwiretoshieldtheadjacentwirepairsCthereflectionoftheelectricalwavebackfromthefarendofthecableDthecollisioncausedbytwonodestryingtousethemediasimultaneously第15題Whichtypeofcablerunismostoftenassociatedwithfiber-opticcable?AbackbonecableBhorizontalcableCpatchcableDworkareacable第16題Whichofthefollowingisacharacteristicofsingle-modefiber-opticcable?AgenerallyusesLEDsasthelightsourceBrelativelylargercorewithmultiplelightpathsClessexpensivethanmultimodeDgenerallyuseslasersasthelightsource第17題InmostbusinessLANs,whichconnectorisusedwithtwisted-pairnetworkingcable?ABNCBRJ-11CRJ-45DTypeF第18題Whichmethodofsignaltransmissionusesradiowavestocarrysignals?AelectricalBopticalCwirelessDacoustic第19題Whenisastraight-throughcableusedinanetwork?AwhenconnectingarouterthroughtheconsoleportBwhenconnectingoneswitchtoanotherswitchCwhenconnectingahosttoaswitchDwhenconnectingaroutertoanotherrouter第20題Aninstalledfiberruncanbecheckedforfaults,integrity,andtheperformanceofthemediabyusingwhatdevice?AlightinjectorBOTDRCTDRDmultimeter第21題WhichOSIlayerisresponsibleforbinarytransmission,cablespecification,andphysicalaspectsofnetworkcommunication?APresentationBTransportCDataLinkDPhysical第22題Refertotheexhibit.Cable1andCable2arewiredforspecificphysicallayerrequirements.WhichthreesegmentsuseCable2?(Choosethree.)

ASegment1BSegment2CSegment3DSegment4ESegment5FSegment6正確答案：BEF第23題Refertotheexhibit.Whileconfiguringanetwork,atechnicianwiredeachendofaCategory5ecableasshown.Whichtwostatementsaretrueaboutthissetup?(Choosetwo.)AThecableissuitableforconnectingaswitchtoarouterEthernetport.BThecableissuitableforconnectingdissimilartypesofdevices.CThecableisunusableandmustberewired.DThecableisterminatedinawaythatthetransmitpiniswiredtothereceivepin.EThecablesimulatesapoint-to-pointWANlink.正確答案：AB第24題Refertotheexhibit.Whichthreestatementsidentifythetypeofcablingthatwouldbeusedinthesegmentsthatareshown?(Choosethree.)ASegment1usesbackbonecabling.

BSegment1usesapatchcable.

CSegment3usespatchcabling.

DSegment3usesverticalcabling.

ESegment3useshorizontalcabling.

FSegment4usesverticalcabling.

正確答案：BEF第25題Refertotheexhibit.Astudentworkinginthelabselectsacablethatiswiredasshown.Whichconnectiontypescansuccessfullybemadewiththiscable?(Choosetwo.)AconnectingaPCtoarouter'sconsoleport

Bconnectingtworouterstogetherviatheirfastethernetports

Cconnectingtwoswitchestogetheratgigabitspeeds

DconnectingaPCtoaswitchatGigabitEthernetspeeds

EconnectingtwodeviceswiththesameinterfacetypeatFastEthernetspeeds

正確答案：BE第26題Refertotheexhibit.Eachmedialinkislabeled.Whattypeofcableshouldbeusedtoconnectthedifferentdevices?AConnection1-straight-throughcableConnection2-straight-throughcableConnection3-crossovercableBConnection1-straight-throughcableConnection2-crossovercableConnection3-rollovercableCConnection1-crossovercableConnection2-rollovercableConnection3-straight-throughcableDConnection1-crossovercableConnection2-straight-throughcableConnection3-crossovercableEConnection1-straight-throughcableConnection2-rollovercableConnection3-crossovercable第27題Refertotheexhibit.AnetworkadministratorhasdecidedtousepacketcapturesoftwaretoevaluatealltrafficfromthestudentsubnetonthewaytotheInternet.Toensurethatallpacketsarecaptured,whatnetworkdeviceshouldbeusedtoconnectthemonitoringstationtothenetworkbetweenR1andR2?AhubBrouterCfirewallappliance

Dwirelessaccesspoint

第28題Refertotheexhibit.Theswitchandworkstationareadministrativelyconfiguredforfull-duplexoperation.Whichstatementaccuratelyreflectstheoperationofthislink?ANocollisionswilloccuronthislink.BOnlyoneofthedevicescantransmitatatime.

CTheswitchwillhavepriorityfortransmittingdata.

DThedeviceswilldefaultbacktohalfduplexifexcessivecollisionsoccur.

第29題Refertotheexhibit.WhichtypeofCategory5cableisusedtomakeanEthernetconnectionbetweenHostAandHostB?Acoaxcable

BrollovercableCcrossovercableDstraight-throughcableTEST4第1題Whichtwotypesofmediacanprovidebandwidthupto1Gb/s?(Choosetwo.)A10BASE-TB100BASE-TC100BASE-FXD1000BASE-TXE1000BASE-SX正確答案：DE第2題Whataretwocharacteristicsofthedatalinklayer?(Choosetwo.)AItsegmentsandreordersthedata.BItexchangestheframesbetweennodes.CItdefinesthemethodbywhichnetworkdevicesplacedataontothemedia.DItmanagesthetransferofdatabetweentheprocessesthatrunoneachhost.EItretrievessignalsfromthemediaandrestoresthemtotheirbitrepresentations.正確答案：BC第3題Whataretwofunctionsofthedatalinklayer?(Choosetwo.)AItsegmentsandreordersthedata.BItexchangesdatabetweenprogramsthatarerunningonthesourceanddestinationhosts.CItcontrolshowdataisplacedontothemedia.DItgeneratessignalstorepresentthebitsineachframe.EItencapsulateseachpacketwithaheaderandatrailertotransferitacrossthelocalmedia.正確答案：CE第4題WhatarethreecharacteristicsofCSMA/CD?(Choosethree.)ADeviceslistentothemediaandtransmitdataonlywhentheycannotdetectanothersignalonthemedia.BAlldevicesonthemediacanhearallcommunications.CDevicescommunicatebasedonaconfiguredpriority.DAfteracollisionoccurs,thedevicesthatcausedthecollisionhavefirstprioritywhenattemptingtoretransmit.EWhenacollisionoccurs,alldevicesstoptransmittingforarandomlygeneratedperiodoftime.FCSMA/CDusesatokensystemtoavoidcollisions.正確答案：ABE第5題WhatarethetwomostcommonlyusedmediatypesinEthernetnetworkstoday?(Choosetwo.)AcoaxialthicknetBcopperUTPCcoaxialthinnetDopticalfiberEshieldedtwistedpair正確答案：BD第6題Whatthreeprimaryfunctionsdoesdatalinklayerencapsulationprovide?(Choosethree.)AaddressingBerrordetectionCframedelimitingDportidentificationEpathdeterminationFIPaddressresolution正確答案：ABC第7題WhatarethreefunctionsoftheupperdatalinksublayerintheOSImodel?(Choosethree.)ArecognizesstreamsofbitsBidentifiesthenetworklayerprotocolCmakestheconnectionwiththeupperlayersDidentifiesthesourceanddestinationapplicationsEinsulatesnetworklayerprotocolsfromchangesinphysicalequipmentFdeterminesthesourceofatransmissionwhenmultipledevicesaretransmitting正確答案：BCE第8題WhichtwofeaturesmakeswitchespreferabletohubsinEthernet-basednetworks?(Choosetwo.)Areductionincross-talkBminimizingofcollisionsCsupportforUTPcablingDdivisionintobroadcastdomainsEincreaseinthethroughputofcommunications正確答案：BE第9題WhichstatementscorrectlydescribeMACaddresses?(Choosethree.)AdynamicallyassignedBcopiedintoRAMduringsystemstartupClayer3addressDcontainsa3byteOUIE6byteslongF32bitslong正確答案：BDE第10題EthernetoperatesatwhichlayersoftheOSImodel?(Choosetwo.)ANetworklayerBTransportlayerCPhysicallayerDApplicationlayerESessionlayerFData-linklayer正確答案：CF第11題Whichofthefollowingdescribeinterframespacing?Atheminimuminterval,measuredinbit-times,thatanystationmustwaitbeforesendinganotherframeBthemaximuminterval,measuredinbit-times,thatanystationmustwaitbeforesendinganotherframeCthe96-bitpayloadpaddinginsertedintoaframetoachievealegalframesizeDthe96-bitframepaddingtransmittedbetweenframestoachievepropersynchronizationEthetimeallowedforslowstationstoprocessaframeandprepareforthenextframeFthemaximumintervalwithinwhichastationmustsendanotherframetoavoidbeingconsideredunreachable正確答案：AE第12題WhatarethreecharacteristicsofvalidEthernetLayer2addresses?(Choosethree.)ATheyare48binarybitsinlength.BTheyareconsideredphysicaladdresses.CTheyaregenerallyrepresentedinhexadecimalformat.DTheyconsistoffoureight-bitoctetsofbinarynumbers.ETheyareusedtodeterminethedatapaththroughthenetwork.FTheymustbechangedwhenanEthernetdeviceisaddedormovedwithinthenetwork.正確答案：ABC第13題Whattwofactsaretruewhenadeviceismovedfromonenetworkorsubnettoanother?(Choosetwo.)ATheLayer2addressmustbereassigned.BThedefaultgatewayaddressshouldnotbechanged.CThedevicewillstilloperateatthesameLayer2address.Applicationsandserviceswillneedadditionalportnumbersassigned.DTheLayer3addressmustbereassignedtoallowcommunicationstothenewnetwork.正確答案：CD第14題Whichstatementsdescribethelogicaltoken-passingtopology?(Choosetwo.)ANetworkusageisonafirstcome,firstservebasis.BComputersareallowedtotransmitdataonlywhentheypossessatoken.CDatafromahostisreceivedbyallotherhosts.DElectronictokensarepassedsequentiallytoeachotherETokenpassingnetworkshaveproblemswithhighcollisionrates.正確答案：BD第15題Whatistrueregardingmediaaccesscontrol?(Choosethree.)AEthernetutilizesCSMA/CDBdefinedasplacementofdataframesonthemediaCcontention-basedaccessisalsoknownasdeterministicD802.11utilizesCSMA/CDEDataLinklayerprotocolsdefinetherulesforaccesstodifferentmediaFcontrolledaccesscontainsdatacollisions正確答案：ABE第16題Whatdeterminesthemethodofmediaaccesscontrol?(Choosetwo.)AnetworklayeraddressingBmediasharingCapplicationprocessesDlogicaltopologyEintermediarydevicefunction正確答案：BD第17題WhichthreefactorsshouldbeconsideredwhenimplementingaLayer2protocolinanetwork?(Choosethree.)AtheLayer3protocolselectedBthegeographicscopeofthenetworkCthePDUdefinedbythetransportlayerDthephysicallayerimplementationEthenumberofhoststobeinterconnected正確答案：BDE第18題AtechnicianisaskedtosecuretheprivilegedEXECmodeofaswitchbyrequiringapassword.Whichtypeofpasswordwouldrequirethisloginandbeconsideredthemostsecure?AconsoleBenableCenablesecretDVTY第19題HostAsendsaframewiththedestinationMACaddressasFFFF.FFFF.FFFF.Whatactionwilltheswitchtakeforthisframe?AItwilldroptheframe.BItwillsendtheframebacktohostA