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1.WhatisthenameofeachlayerofOSIreferen__modelListfromlayer1to7____physical_______datalink____________network___________transport__________________session__________presentation_______________application___________.
2.Whatarethestepsofthedataencapsulationpro__ss______data_______segment___________packct_____________frame___________bits_______.
3.WhichlayeroftheOSImodelprovidesconnectivityandpathselectionbetweentwoendsystemswhereroutingoccurs_______layer3network____________
4.WhichlayeroftheOSImodelisresponsiblefortheforminwhichdataiscommunicatedtothenextlayeroftheOSImodel___presentation__________
5.WhichlayeroftheOSImodelcontainsaprotocolthatprovidesareliabledeliveryofdatabetweenhostsondifferentnetworks________transport__________
6.Wheredothefollowingitemsoftherouters__eRAMNVRAMFlashROMpower-ondiagnostics_________ROM_______operatingsystemi__ge__________Flash______routingtables______________RAM__startupconfigurationfile_____________NVRAM___runningconfigurationfile_______________RAM_
7.How__nybitsareinthenetworkandsubnetportionofaclassBnetworkwithasubnet__skof
255.
255.
255.192___16_____10_____________
8.How__nyusablehostaddressesare__ailableonthenetworkwithasubnet__skof
255.
255.
224.0________2^13=8190_________
9.How__nyusablesubnetsarecreatedif4bitsareborrowedfromthehostfield__2^4-2=14____
10.ArethesetwoIPaddresses
150.
150.
159.23and
150.
150.
130.23withsubnet__sk
255.
255.
224.0onthesamesubnetworkyesorno_______YES____
11.Whattypeofaddressis
168.
192.
3.
63255.
255.
255.192hostnetworkbroadcastorsubnetA______subnet__________address.
12.Whatistheminimumand__ximumnumberofbitsthatcanbeborrowedtocreateasubnetwiththeIPaddress
212.
43.
11.72ClassCMinimum=_____1__________ximum=___6__________.Multiplechoi__s:57%
1.Whatisexchangedtoprovidecommunicationbetweentwohostssour__anddestinationOSIpeerlayersA.PacketdatagramsB.PacketdataunitsC.ProtocoldatagramsD.Protocoldataunits
2.Whichisacharacteristicofacollisiondo__inA.allcomputersonasinglesharedac__ssmediaB.allcomputerssharingasingleIPaddressC.allcomputerssharingasingle__CaddressD.allcomputerswithinaWAN
3.WhichofthefollowingisabenefitofnetworksegmentationA.redu__dcongestionB.redu__dequipmentrequirementsC.creationofmoreIPaddressesD.creationofmore__Caddresses
4.WhatisthefunctionofARPA.Itisusedto__paknown__CaddresstoanunknownIPaddress.B.ItisusedtodevelopacachedLayer4addressresour__table.C.Itisusedto__paknownIPaddresstoanunknown__Caddress.D.ItsendsabroadcastmessagelookingfortherouterIPaddress.
5.WhathappensifadatapacketreachesarouterthatisdestinedforanetworkwithwhichthatrouterisnotdirectlyconnectedA.Therouterforwardsthepackettoallotherrouters.B.Therouterreturnsthepackettothesour__devi__withnoexplanation.C.Therouterforwardsthepackettoanotherrouterthatmostlikelycontainsinfor__tionaboutthedestination.D.Therouterreturnsthepackettothesour__devi__withtheexplanationthatthedestinationwasunreachable.
6.WhichofthefollowingdescribestheeffectofsubnettingontheamountofbroadcasttrafficA.decreasesitbecausebroadcastsarenotforwardedoutsideasubnetB.decreasesitbecauseitwilltakelesstimeforahosttogetbroadcastsfromtherouters.C.increasesitbecausethepacketsmustbeforwardedtoallsubnetsD.increasesitbecauseroutersduplicatebroadcasts
7.Whatprotocolisusedtoallowredundantpathsinaswitched/bridgednetworkA.RIPB.SpanningTreeC.IGRPD.OSPF
8.WhatdoesabridgeusetobuilditsaddresstableA.DestinationIPaddressB.Destination__CaddressC.Sour__IPaddressD.Sour____Caddress
9.WhathappenstotheLayer2andLayer3addressingofdataasitisroutedfromLANtoWANA.TheLayer2andLayer3addressingre__inconstantthroughoutthepro__ss.B.TheLayer2addressingwillre__inconstantwhiletheLayer3addressingwillchange.C.TheLayer2addressingwillchangewhiletheLayer3addressingwillre__inconstant.D.TheLayer2andLayer3addressingwillbothchangeateachrouterencountered.
10.Whenahostre__ivesadatasegmentwhatallowsthehosttodeterminewhichapplicationshouldre__ivethesegmentA.IPsour__addressB.IPdestinationaddressC.PARD.slidingwindowE.portnumberF.SYNpacket
11.WhichofthefollowingprotocolsusesUDPfortransportlayerservi__sA.__TPB.HTTPC.DNSD.FTP
12.Howareoriginatingsour__portnumbersassignedduringthedataencapsulationpro__ssA.assigned__nuallybytheuserwhenstartingtheapplicationB.assigneddynamicallybythesour__hostC.assignedbytheroutingprotocolduringthelookuppro__ssD.assignedbythedestinationhostduringsessionnegotiation
13.WhatisthepurposeofPositiveAcknowledgmentandRetran__issionPARA.PARallowsthepresentationlayertorequestthatdataberesentinafor__tthedestinationhostcanpro__ss.B.PARprovidesamechani__forthere__ivingdevi__torequestthatallsegmentsberetran__ittedifonesegmentiscorrupt.C.PARhelpsensurethatanumberofdatasegmentssentbyonehostarere__ivedbyanotherhostbeforeadditionaldatasegmentsaresent.D.PARisusedtorenegotiatethewindowsizeduringthesynchronizationpro__ss.
14.WhichofthefollowingdeterminestheamountofdatathatcanbesentwithoutanacknowledgmentwhensendingaTCPsegmentA.segmentnumberB.prioritynumberC.windowsizeD.valueinthelengthfieldE.valueintheportfieldF.acknowledgmentnumber
15.Connection-orientedservi__sinvolvewhichthreephasesA.ConnectionestablishmentDatatransferConnectionterminationB.ConnectionestablishmentDatatransferFlowcontrolC.ConnectionestablishmentFlowcontrolConnectionterminationD.DatatransferFlowcontrolConnectiontermination
16.Whichcom__ndsequen__willpermitac__sstoallfiveroutervirtualterminallineswithapasswordofciscoA.Routerconfig-line#configtelnetRouterconfig-line#linevty05Routerconfig-line#passwordciscoB.Routerconfig#linevty04Routerconfig#passwordciscoC.Routerconfig#linevty04Routerconfig-line#passwordciscoRouterconfig-line#loginD.Routerconfig-line#configtelnetRouterconfig-line#passwordciscoRouterconfig-line#sessions
0417.Whatisthecorrectsequen__ofinitializationforarouterthathasaconfigurationfileA.LoadsbootstraploadsconfigurationfileloadsoperatingsystemB.LoadsbootstraploadsoperatingsystemloadsconfigurationfileC.LoadsbootstraploadsRAMloadsoperatingsystemD.LoadsoperatingsystemloadsconfigurationfileloadsRAM
18.Ifaroutercannotfindavalidconfigurationfileduringthestartupsequen__whatwilloccurA.Thestartupsequen__willreset.B.Therouterwillentersetupmode.C.Thestartupsequen__willhaltuntilavalidconfigurationfileisacquired.D.Therouterwillgenerateadefaultconfigurationfilebasedonthelastvalidconfiguration.E.Therouterwillmonitorlocaltraffictodetermineroutingprotocolconfigurationrequirements.
19.Whatcanbelearnedbyissuingtheshowversioncom__ndChoosethree.A.therouterhostnameB.thecurrentconfig-registersettingC.thelocationfromwhichtheIOSwasloadedD.thebootsystemcom__ndsconfiguredinNVRAME.theamountofRAMNVRAMandFlashmemoryintherouter
20.WheredoesarouterlookforbootsystemstatementsA.ROMB.RAMC.NVRAMD.Flash
21.Whatdoesaconfigurationregistersettingof0x2102indicateonarouterA.It____stheroutertolocateandloadtheIOSfromNVRAM.B.It____stheroutertolocateandloadtheIOSfromFLASH.C.It____stheroutertobypasstheconfigurationinNVRAM.D.It____stheroutertolookinthestartupconfigurationforbootsystemcom__nds.
22.WhatdoroutersusetoselectthebestpathforoutgoingdatapacketsA.ARPtablesB.bridgingtablesC.routingtablesD.switchingtables
23.WhydoweneedtospecifyalistofnetworkswhenconfiguringaninteriorroutingprotocolA.To____therouterhowtoreachthosenetworks.B.To____therouterwhichattachednetworkstolistentoforroutingupdates.C.To____therouterwhichsetofmetricstouseforthosenetworks.D.To____therouterwhichroutingprotocoltouse.
24.Whichofthefollowingmethodsdoessplithorizonusetoredu__incorrectroutinginfor__tionA.Routingupdatesaresplitinhalftoredu__theupdatetime.B.Infor__tionlearnedfromonesour__isnotdistributedbacktothatsour__.C.Newrouteinfor__tionmustbelearnedfrommultiplesour__stobeac__pted.D.Thetimebetweenupdatesissplitinhalftospeedconvergen__.E.Newrouteinfor__tionissuppresseduntilthesystemhasconverged.
25.WhatdoesarouterdoifitisunabletodeliverapackettoitsdestinationChoosetwo.A.Theroutersendstheoriginalpacketbacktothesour__.B.Therouterkeepsthepacketinitsbufferuntilthenextroutingtableupdate.C.TheroutersendsanICMPDestinationUnreachablemessagebacktothesour__.D.Theroutersendsoutabroadcastmessageinsearchofthedestination.E.Therouterdiscardstheoriginalpacket.
26.Whentroubleshootinganetworkitisimportanttointerprettheoutputofvariousroutercom__nds.Usingthegraphicidentifywhichofthefollowingstatementsaretrue.Choosethree.A.Themissinginfor__tionforBlank1isthecom__ndshowiproute.B.Themissinginfor__tionforBlank1isthecom__nddebugiproute.C.Themissinginfor__tionforBlank2isthenumber
100.D.Themissinginfor__tionforBlank3istheletterR.E.Themissinginfor__tionforBlank3istheletterI.F.Themissinginfor__tionforBlank4istheletterC.
27.Accordingtotherouteroutputfromtheshowiproutecom__ndshownabovewhichofthefollowingstatementsaretrueChoosetwo.A.Themetrictonetwork
192.
168.
8.0is
24.B.Thehopcounttoadevi__onnetwork
192.
168.
8.0is
2.C.Thetotalpathcosttonetwork
192.
168.
4.0isthedefaultvalueof
16.D.Thelogicaladdressofthenextrouterfornetwork
192.
168.
1.0is
192.
168.
3.
1.E.Thedevi__sonnetwork
192.
168.
5.0cannotbereachedasindicatedbytheClabel.
28.WhichofthefollowingarevalidstaticIProutesChoosethree.A.RouterBconfig#iproute
192.
168.
5.
0255.
255.
255.0S1B.RouterCconfig#iproute
192.
168.
1.
0255.
255.
255.0S1C.RouterAconfig#iproute
192.
168.
3.
0255.
255.
255.
0192.
168.
2.2D.RouterBconfig#iproute
192.
168.
1.
0255.
255.
255.
0192.
168.
2.2E.RouterCconfig#iproute
192.
168.
2.
0255.
255.
255.
0192.
168.
4.1F.RouterAconfig#iproute
192.
168.
4.
0255.
255.
255.
0192.
168.
2.
129.ConsidertheRIPnetworkshowninthediagram.WhichentrieswouldbelistedintheroutingtableofRouterAA.R
192.
168.
5.2[120/1]via
192.
168.
15.000:00:09Serial0B.R
192.
168.
15.0[120/1]via
192.
168.
5.200:00:13Serial1C.R
192.
168.
15.0[120/1]via
192.
168.
5.100:00:13Serial0D.R
192.
158.
5.1[120/1]via
192.
168.
5.200:00:29Serial1R
192.
168.
15.0[120/1]via
192.
168.
5.200:00:29Serial1E.R
192.
158.
5.1[120/1]via
192.
168.
5.200:00:18Serial0R
192.
168.
15.2[120/1]via
192.
168.
5.200:00:18Serial
030.Arouterhaslearnedaboutanetworkthroughstaticanddynamicroutingpro__sses.Whichofthefollowingrouteswillbeusedtoreachnetwork
192.
168.
168.0A.I
192.
168.
168.0/24[100/__47]via
192.
168.
200.100:00:09Ethernet0B.O
192.
168.
168.0/24[110/1012]via
192.
168.
200.100:00:22Ethernet0C.R
192.
168.
168.0/24[120/1]via
192.
168.
200.100:00:17Ethernet0D.S
192.
168.
168.0/24[1/0]via
192.
168.
200.100:00:10Ethernet
031.Refertothenetworkandroutingtableentriesshowninthegraphic.Whatwillhappenwhenapacketdestinedfornetwork
192.
66.
7.0isre__ivedbyRouterAA.Itwillbeforwardedthroughinte_____S
1.B.Itwillbeforwardedtothedefaultroute.C.ItwillbedirectedtowardtheInternet.D.Itwillbediscarded.
32.Whichofthefollowingcom__ndscanbeusedtostaticallyconfiguredefaultroutesChoosetwo.A.ipstatic-routeB.iprouteC.ipnetwork-routeD.ipdefault-networkE.ipdefault-static
33.Whichtypeofmessageisgeneratedbyahostwhenthepingcom__ndisenteredA.ICMPechorequestB.ICMPechoreplyC.UDPechorequestD.UDPerrormessage
34.WhathappenswhenanICMPpacketisnotdeliverableChoosetwo.A.Thepacketisdropped.B.AnICMPerrormessageisreturnedtotheoriginalsender.C.AnICMPerrormessageisreturnedtotheoriginaldestination.D.AnICMPpacketisreturnedtothenearestrouterinthepath.E.NofurtherICMPpacketsaregeneratedasaresultofthetransaction.
35.ACLstatementsoperateinsequentiallogicalorder.Ifacondition__tchistruetherestoftheACLstatementsarenotchecked.IfalloftheACLstatementsareun__tchedwhathappenstothepacketA.Thepacketswillbepla__dinabufferandforwardedwhentheACLisremoved.B.Thepacketswillbesenttothesour__withanerrornotificationmessage.C.Theimplicitpermitanystatementpla__dattheendofthelistwillallowthepacketstoflowthroughuninhibited.D.Theimplicitdenyanystatementpla__dattheendofthelistwillcausethepacketstobedropped.
36.Whichwildcard__skwould__tchthehostrangeforthesubnet
192.
168.
1.32/26A.
0.
0.
0.32B.
0.
0.
0.63C.
0.
0.
63.255D.
0.
0.
0.
3137.AssumingtheACLinthegraphiciscorrectlyappliedtoaninte_____whateffectwillthisACLh__eonnetworktrafficA.Host
192.
168.
15.4willbedeniedftpac__sstoanydestinationbutwillbepermittedallotherac__ss.B.Allftptraffictohost
192.
168.
15.4willbedenied.C.Alltrafficfromthatinte_____willbedenied.D.NotrafficwillbedeniedbecauseapermitstatementdoesnotexistinthisACL.
38.ArouterthathastwoEthernetinte_____sandoneserialinte_____isconfiguredtoroutebothIPandIPX.Whatisthe__ximumnumberofIPACLsthatcanbeconfiguredtofilterpacketsonthisrouterA.1B.2C.3D.6E.
1239.Whichitemswouldbedisplayedwhentheshowipprotocolcom__ndisexecutedChoosethree.A.sour__sofroutingupdatesB.networksbeingadvertisedC.routingprotocolupordownD.configuredroutedprotocolsE.Layer2statusoftheinte_____F.updatetimervalues
40.Theshowcdpnei___orscom__ndisaveryusefulnetworktroubleshootingtool.Usingtheoutputinthegraphicselectthestatementsthataretrue.Choosetwo.A.CDPoperatesatthenetworklayeroftheOSImodel.B.Theoutputofthiscom__nddisplaysinfor__tionaboutdirectlyconnectedCiscodevi__sonly.C.TheswitchisattachedtotheSanJose1FastEthernet0/21inte_____.D.SanJose1isrunningCDPversion
12.
0.E.SanJose1hastwofullyoperationalcdp-enabledCiscoswitchesdirectlyconnectedtoit.F.SanJose2isa2600seriesrouterrunningseveralroutedprotocols.
41.Theoutputoftheshowipinte_____briefcom__nddisplaysSerial0isuplineprotocolisdown.WhichofthefollowingarepossiblecausesforthelineprotocolbeinginthedownstateChoosetwo.A.TheclockrateisnotsetontheDTE.B.Anincorrectdefaultgatewayissetontherouter.C.Anetworkismissingfromtheroutingprotocolconfiguration.D.TheencapsulationontheSerial0inte_____isincorrect.E.Keepalivesarenotbeingsent.
42.Thenetworkadministratorshowninthegraphicisunabletoac__sstheTFTPserverattachedtotheMiamirouter.ConsideronlytheIPaddressingschemetoidentifythecausesofthisproblem.Choosetwo.A.Thedefaultgatewayconfiguredonthenetworkadministratorsworkstationisnotavalidhostaddress.B.TheIPaddressconfiguredoninte_____E1oftheMiamirouterisnotavalidhostaddress.C.TheIPaddressoftheTFTPserverisasubnetworkaddress.DTheIPaddressoftheS0inte_____oftheDetroitrouterisabroadcastaddress.E.TheIPaddressesfortheMiamiS1inte_____andtheDetroitS0arenotinthesamesubnet.QuestionandAnswer:16%
1.
1.Describethedifferen__sbetweenroutedandroutingprotocols.Andgivesomeexamplesofthem.Routedprotocol:anynetworkprotocolthatprovidesenoughinfor__tioninitsnetworklayeraddresstoallapackettobeforwardedfromonehosttoanotherhostbasedontheaddressingscheme.Routedprotocoldefinethefieldfor__tswithinapacket.Packetsaregenerallyconveyedfromendsystemtoendsystem.Routingprotocolsupportsaroutedprotocolbyprovidingmechani__sforsharingroutinginfor__tion.Routingprotocolmessagesmovebetweentherouters.Aroutingprotocolallowstherouterstocommunicatewithotherrouterstoupdateand__intaintables.Routedprotocolstransportdataacrossanetworkandroutingprotocolsallowrouterstoproperlydirectthedatafromonelocationtoanother.Routedprotocolexamples:IPIPXAppleTalkRoutingprotocolexamples:RIPIGRPEIGRPOSPF
2.whatarethethreetypesofroutingprotocolAndgivesomeexamplesofthesethreetypesofroutingprotocols.Distan__vector:RIPIGRPEIGRPlink-state:
2.
1.Whatarethedifferen__sbetweenstandardACLandextendedACLStandardACLchacksthesourseaddressofroutedIPpacketsandcomparesitagainstthestatementsdefiningtheACL.Eitherpermitordenyac__ssforanentireprotocolsuite.ExtendedACLchecksthesour__anddestinationIPaddressandalsocancheckforprotocolsandTCPorUDPportnumber.Ac__sscanbepermittedordeniedbasedonwhereapacketoriginateditsdestinationtheprotocoltypetheportaddressandapplication.Whenpacketsarediscardedsomeprotocolssendanechopackettothesenderwhichstatesthatthedestinationwasunreachable.
2.ConfigureandenableanIPac__sslistthatstopspacketsfromsubnet
10.
3.
4.0/24fromgettingoutserialinte_____S0andthatstopspacketsfrom
134.
141.
5.4fromenteringS
0.Permitallothertraffic.ac__ss-list2deny
10.
3.
4.
00.
0.
0.255ac__ss-list3denyhost
134.
141.
5.4ipac__ss-group2outipac__ss-group3inPage12of12。