思科考试CCNA.docx
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思科考试CCNA.docx
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思科考试CCNA
专业_________________班级_____________姓名___________________……………………………………密……………………………………封………………………………………………线………………………………………
正大教育计算机培训中心思科认证期末考试
CCNA
(1)
适用班级:
CCNA
注意事项:
1.在试卷的标封处填写姓名和班级
2.考试时间共120分钟
3.答案写在答题卡上
1.WhatisthemaximumnumberofIPaddressesthatcanbeassignedtohostsonalocalsubnet
thatusesthesubnetmask
A.14
B.15
C.16
D.30
E.31
F.62
2.Youhaveanetworkthatneeds29subnetswhilemaximizingthenumberofhostaddresses
availableoneachsubnet.Howmanybitsmustyouborrowfromthehostfieldtoprovidethe
correctsubnetmask
A.2
B.3
C.4
D.5
E.6
F.7
3.WhatisthesubnetworkaddressforahostwiththeIPaddressThenetworkaddressofprovideshowmanysubnetsandhosts
A.7subnets,30hostseach
B.7subnets,2,046hostseach
C.7subnets,8,190hostseach
D.8subnets,30hostseach
E.8subnets,2,046hostseach
F.8subnets,8,190hostseach
5.WhichtwostatementsdescribetheIPaddress10.16.3.65/23(Choosetwo.)
A.Thesubnetaddressis10.16.3.0Thelowesthostaddressinthesubnetis10.16.2.1Thelastvalidhostaddressinthesubnetis10.16.2.254Thebroadcastaddressofthesubnetis10.16.3.255Thenetworkisnotsubnetted.
6.Ifahostonanetworkhastheaddresswhatisthesubnetworkthishost
belongsto
A.OnaVLSMnetwork,whichmaskshouldyouuseonpoint-to-pointWANlinksinorderto
reducethewasteofIPaddresses
A./27
B./28
C./29
D./30
E./31
8.WhatisthesubnetworknumberofahostwithanIPaddressofYouhaveaninterfaceonarouterwiththeIPaddressofIncludingtherouter
interface,howmanyhostscanhaveIPaddressesontheLANattachedtotherouterinterface
A.6
B.8
C.30
D.62
E.126
10.YouneedtoconfigureaserverthatisonthesubnetTherouterhasthefirst
availablehostaddress.Whichofthefollowingshouldyouassigntotheserver
A.YouhaveaninterfaceonarouterwiththeIPaddressofWhatisthe
broadcastaddressthehostswilluseonthisLAN
A.Youneedtosubnetanetworkthathas5subnets,eachwithatleast16hosts.Whichclassful
subnetmaskwouldyouuse
A.AnetworkadministratorisconnectinghostsAandBdirectlythroughtheirEthernetinterfaces,
asshownintheillustration.Pingattemptsbetweenthehostsareunsuccessful.Whatcanbe
donetoprovideconnectivitybetweenthehosts(Choosetwo.)
A.Acrossovercableshouldbeusedinplaceofthestraight-throughcable.
B.Arollovercableshouldbeusedinplaceofthestraight-throughcable.
C.ThesubnetmasksshouldbesettoAdefaultgatewayneedstobesetoneachhost.
E.ThesubnetmasksshouldbesettoAddress:
Address:
Cable
164Chapter3Subnetting,VLSMs,andTroubleshootingTCP/IP
14.IfanEthernetportonarouterwereassignedanIPaddressofwhatwould
bethevalidsubnetaddressofthishost
A.Usingthefollowingillustration,whatwouldbetheIPaddressofE0ifyouwereusingthe
eighthsubnetThenetworkIDisandyouneedtousethelastavailableIP
addressintherange.Thezerosubnetshouldnotbeconsideredvalidforthisquestion.
A.Usingtheillustrationfromthepreviousquestion,whatwouldbetheIPaddressofS0ifyouwere
usingthefirstsubnetThenetworkIDisandyouneedtousethelastavailable
IPaddressintherange.Again,thezerosubnetshouldnotbeconsideredvalidforthisquestion.
A.Whichconfigurationcommandmustbeineffecttoallowtheuseof8subnetsiftheClassC
subnetmaskisRouter(config)#ipclassless
B.Router(config)#ipversion6
C.Router(config)#noipclassful
D.Router(config)#ipunnumbered
E.Router(config)#ipsubnet-zero
F.Router(config)#ipall-nets
18.YouhaveanetworkwithasubnetofWhichisthevalidhostaddress
A.YourrouterhasthefollowingIPaddressonEthernet0:
Whichofthefollowing
canbevalidhostIDsontheLANinterfaceattachedtotherouter(Choosetwo.)
A.TotesttheIPstackonyourlocalhost,whichIPaddresswouldyouping
A.1.0.0.127
C.Youtypeshowrunning-configandgetthisoutput:
[outputcut]
Lineconsole0
Exec-timeout144
Password7098C0BQR
Login
[outputcut]
Whatdothetwonumbersfollowingtheexec-timeoutcommandmean
A.Ifnocommandhasbeentypedin44seconds,theconsoleconnectionwillbeclosed.
B.Ifnorouteractivityhasbeendetectedin1hourand44minutes,theconsolewillbelockedout.
C.Ifnocommandshavebeentypedin1minuteand44seconds,theconsoleconnectionwill
beclosed.
D.Ifyou’reconnectedtotherouterbyaTelnetconnection,inputmustbedetectedwithin1
minuteand44secondsortheconnectionwillbeclosed.
22.YouneedtofindthebroadcastaddressusedonaLANonyourrouter.Whatcommandwill
youtypeintotherouterfromusermodetofindthebroadcastaddress
A.showrunning-config
B.showstartup-config
C.showinterfaces
D.showprotocols
23.Youwanttototallyreinitializetherouterandreplacethecurrentrunning-configwiththecurrent
startup-config.Whatcommandwillyouuse
A.replacerunstart
B.copyrunstart
C.copystartrun
D.reload
ReviewQuestions243
24.WhichcommandwillshowyouwhetheraDTEoraDCEcableispluggedintoserial0
A.shints0
B.shintserial0
C.showcontrollerss0
D.showserial0controllers
25.Whatkeystrokewillterminatesetupmode
A.Ctrl+Z
B.Ctrl+^
C.Ctrl+C
D.Ctrl+Shift+^
26.Yousettheconsolepassword,butwhenyoudisplaytheconfiguration,thepassworddoesn’t
showup;itlookslikethis:
[outputcut]
Lineconsole0
Exec-timeout144
Password7098C0BQR
Login
[outputcut]
Whatcausethepasswordtobestoredlikethis
A.encryptpassword
B.servicepassword-encryption
C.service-password-encryption
D.exec-timeout144
27.WhichofthefollowingcommandswillconfigureallthedefaultVTYportsonarouter
A.Router#linevty04
B.Router(config)#linevty04
C.Router(config-if)#lineconsole0
D.Router(config)#linevtyall
28.WhichofthefollowingcommandssetsthesecretpasswordtoCisco
A.enablesecretpasswordCisco
B.enablesecretcisco
C.enablesecretCisco
D.enablepasswordCisco
244Chapter4Cisco’sIOSandSecurityDeviceManager
29.Ifyouwantedadministratorstoseeamessagewhenloggingintotherouter,whichcommand
wouldyouuse
A.messagebannermotd
B.bannermessagemotd
C.bannermotd
D.messagemotd
30.HowmanysimultaneousTelnetsessionsdoesaCiscoroutersupportbydefault
A.1
B.2
C.3
D.4
E.5
F.6
31.WhatcommanddoyoutypetosavetheconfigurationstoredinRAMtoNVRAM
A.Router(config)#copycurrenttostarting
B.Router#copystartingtorunning
C.Router(config)#copyrunning-configstartup-config
D.Router#copyrunstartup
32.YoutrytotelnetintoSFRouterfromrouterCorpandreceivethismessage:
Corp#telnetSFRouter
TryingSFRouter(10.0.0.1)…Open
Passwordrequired,butnoneset
[ConnectiontoSFRouterclosedbyforeignhost]
Corp#
Whichofthefollowingsequenceswilladdressthisproblemcorrectly
A.Corp(config)#lineconsole0
B.SFRemote(config)#lineconsole0
C.Corp(config)#linevty04
D.SFRemote(config)#linevty04
33.WhichcommandwilldeletethecontentsofNVRAMonarouter
A.deleteNVRAM
B.deletestartup-config
C.eraseNVRAM
D.erasestart
ReviewQuestions245
34.Whatistheproblemwithaninterfaceifyoutypeshowinterfaceserial0andreceivethe
followingmessage
Serial0isadministrativelydown,lineprotocolisdown
A.Thekeepalivesaredifferenttimes.
B.Theadministratorhastheinterfaceshutdown.
C.Theadministratorispingingfromtheinterface.
D.Nocableisattached.
35.Whichofthefollowingcommandsdisplaystheconfigurableparametersandstatisticsofall
interfacesonarouter
A.showrunning-config
B.showstartup-config
C.showinterfaces
D.showversions
36.IfyoudeletethecontentsofNVRAMandreboottherouter,whatmodewillyoubein
A.Privilegedmode
B.Globalmode
C.Setupmode
D.NVRAMloadedmode
37.Youtypethefollowingcommandintotherouterandreceivethefollowingoutput:
Router#showserial0/0
^
%Invalidinputdetectedat‘^’marker.
Whywasthiserrormessagedisplayed
A.Youneedtobeinprivilegedmode.
B.Youcannothaveaspacebetweenserialand0/0.
C.Therouterdoesnothaveaserial0/0interface.
D.Partofthecommandismissing.
38.YoutypeRouter#shruandreceivean%ambiguouscommanderror.Whydidyoureceive
thismessage
A.Thecommandrequiresadditionaloptionsorparameters.
B.Thereismorethanoneshowcommandthatstartswiththelettersru.
C.Thereisnoshowcommandthatstartswithru.
D.Thecommandisbeingexecutedfromthewrongroutermode.
246Chapter4Cisco’sIOSandSecurityDeviceManager
39.WhichofthefollowingcommandswilldisplaythecurrentIPaddressingandthelayer1and
2statusofaninterface(Choosethree.)
A.showversion
B.showprotocols
C.showinterfaces
D.showcontrollers
E.showipinterface
F.showrunning-config
40.WhatlayeroftheOSImodelwouldyouassumetheproblemisinifyoutypeshowinterface
serial1andreceivethefollowingmessage
Serial1isdown,lineprotocolisdown
A.Physicallayer
B.DataLinklayer
C.Networklayer
D.None;itisarouterproblem.
41.Whatdoesthecommando/r0x2142provide
A.Itisusedtorestarttherouter.
B.ItisusedtobypasstheconfigurationinNVRAM.
C.ItisusedtoenterROMMonitormode.
D.Itisusedtoviewthelostpassword.
42.WhichcommandwillcopytheIOStoabackuphostonyournetwork
A.transferIOStocopyrunstart
C.copytftpflash
D.copystarttftp
E.copyflashtftp
43.Youaretroubleshootingaconnectivityprobleminyourcorporatenetworkandwanttoisolate
theproblem
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