CCNA考试题题库(含答案).docx
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CCNA考试题题库(含答案).docx
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1Whenyouareloggedintoaswitch,whichpromptindicatesthatyouareinprivilegedmode?
A.% B.@ C.> D.$ E.#
2Whichcommandshowssystemhardwareandsoftwareversioninformation?
A.showconfigurationB.showenvironmentC.showinventoryD.showplatform E.showversion
3CiscoCatalystswitchesCAT1andCAT2haveaconnectionbetweenthemusingportsFA0/13.An802.1Qtrunkisconfiguredbetweenthetwoswitches.OnCAT1,VLAN10ischosenasnative,butonCAT2thenativeVLANisnotspecified.Whatwillhappeninthisscenario?
A.802.1Qgiantsframescouldsaturatethelink.
B.VLAN10onCAT1andVLAN1onCAT2willsenduntaggedframes.
C.AnativeVLANmismatcherrormessagewillappear.
D.VLAN10onCAT1andVLAN1onCAT2willsendtaggedframes.
4Whichcommandwouldcorrectlyconfigureaserialportonarouterwiththelastusablehostaddressinthe192.216.32.32/29subnet?
A.Router(config-if)#ipaddress192.216.32.38255.255.255.240
B.Router(config-if)#ipaddress192.216.32.39255.255.255.224
C.Router(config-if)#ipaddress192.216.32.63255.255.255.248
D.Router(config-if)#ipaddress192.216.32.39255.255.255.248
E.Router(config-if)#ipaddress192.216.32.63255.255.255.248
F.Router(config-if)#ipaddress192.216.32.38255.255.255.248
5ThenetworkdefaultgatewayapplyingtoahostbyDHCPis192.168.5.33/28.WhichoptionisthevalidIPaddressofthishost?
A.192.168.5.55 B.192.168.5.47 C.192.168.5.40 D.192.168.5.32 E.192.168.5.14
6Whichtwoaddressescanbeassignedtoahostwithasubnetmaskof255.255.254.0?
(Choosetwo.)
A.113.10.4.0 B.186.54.3.0 C.175.33.3.255 D.26.35.2.255 E.17.35.36.0
7Thenetworkadministratorhasaskedyoutocheckthestatusoftheworkstation'sIPstackbypingingtheloopbackaddress.Whichaddresswouldyoupingtoperformthistask?
A.10.1.1.1 B.127.0.0.1 C.192.168.0.1 D.239.1.1.1
8WorkstationAhasbeenassignedanIPaddressof192.0.2.24/28.WorkstationBhasbeenassignedanIPaddressof192.0.2.100/28.Thetwoworkstationsareconnectedwithastraight-throughcable.Attemptstopingbetweenthehostsareunsuccessful.Whattwothingscanbedonetoallowcommunicationsbetweenthehosts?
(Choosetwo.)
A.Replacethestraight-throughcablewithacrossovercable.
B.Changethesubnetmaskofthehoststo/25.
C.Changethesubnetmaskofthehoststo/26.
D.ChangetheaddressofWorkstationAto192.0.2.15.
E.ChangetheaddressofWorkstationBto192.0.2.111.
9YourISPhasgivenyoutheaddress223.5.14.6/29toassigntoyourrouter'sinterface.Theyhavealsogivenyouthedefaultgatewayaddressof223.5.14.7.Afteryouhaveconfiguredtheaddress,therouterisunabletopinganyremotedevices.Whatispreventingtherouterfrompingingremotedevices?
A.Thedefaultgatewayisnotanaddressonthissubnet.
B.Thedefaultgatewayisthebroadcastaddressforthissubnet.
C.TheIPaddressisthebroadcastaddressforthissubnet.
D.TheIPaddressisaninvalidclassDmulticastaddress.
10WhichcommandisusedtocopytheconfigurationfromRAMintoNVRAM?
A.copyrunning-configstartup-config B.copystartup-config:
running-config:
C.copyrunningconfigstartupconfig D.copystartupconfigrunningconfigE.writeterminal
11WhichcommandisusedtoloadaconfigurationfromaTFTPserverandmergetheconfigurationintoRAM?
A.copyrunning-config:
TFTP:
B.copyTFTP:
running-configC.copyTFTP:
startup-config D.copystartup-config:
TFTP:
12Asystemadministratortypesthecommandtochangethehostnameofarouter.WhereontheCiscoIFSisthatchangestored?
A.NVRAM B.RAM C.FLASH D.ROM E.PCMCIA
13Whichcommandisusedtoconfigureadefaultroute?
A.iproute172.16.1.0255.255.255.00.0.0.0 B.iproute172.16.1.0255.255.255.0172.16.2.1
C.iproute0.0.0.0255.255.255.0172.16.2.1 D.iproute0.0.0.00.0.0.0172.16.2.1
14IfIProutingisenabled,whichtwocommandssetthegatewayoflastresorttothedefaultgateway?
(Choosetwo.)
A.ipdefault-gateway0.0.0.0 B.iproute172.16.2.10.0.0.00.0.0.0
C.ipdefault-network0.0.0.0 D.ipdefault-route0.0.0.00.0.0.0172.16.2.1
E.iproute0.0.0.00.0.0.0172.16.2.1
15WhichcommandwouldyouconfiguregloballyonaCiscorouterthatwouldallowyoutoviewdirectlyconnectedCiscodevices?
A.enablecdp B.cdpenable C.cdprun D.runcdp
16WhichcommandisusedtoseethepathtakenbypacketsacrossanIPnetwork?
A.showiproute B.showroute C.traceroute D.traceiproute
17Whichcommandisusedtodebugapingcommand?
A.debugicmp B.debugipicmp C.debugtcp D.debugpacket
18WhichcommanddisplaysCPUutilization?
A.showprotocols B.showprocess C.showsystem D.showversion
19Whenconfiguringaserialinterfaceonarouter,whatisthedefaultencapsulation?
A.atm-dxi B.frame-relay C.hdlc D.lapb E.ppp
20Whatmustbesetcorrectlywhenconfiguringaserialinterfacesothathigher-levelprotocolscalculat
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