新CCNA题库word版1100题.docx
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新CCNA题库word版1100题
QUESTION1
Whenyouareloggedintoaswitch,whichpromptindicatesthatyouareinprivilegedmode?
A.%
B.@
C.>
D.$
E.#
QUESTION2
Whichcommandshowssystemhardwareandsoftwareversioninformation?
A.showconfiguration
B.showenvironment
C.showinventory
D.showplatform
E.showversion
QUESTION3
CiscoCatalystswitchesCAT1andCAT2haveaconnectionbetweenthemusingportsFA0/13.An802.1Q
trunkisconfiguredbetweenthetwoswitches.OnCAT1,VLAN10ischosenasnative,butonCAT2the
nativeVLANisnotspecified.Whatwillhappeninthisscenario?
A.802.1Qgiantsframescouldsaturatethelink.
B.VLAN10onCAT1andVLAN1onCAT2willsenduntaggedframes.
C.AnativeVLANmismatcherrormessagewillappear.
D.VLAN10onCAT1andVLAN1onCAT2willsendtaggedframes.
QUESTION4
Whichcommandwouldcorrectlyconfigureaserialportonarouterwiththelastusablehostaddressinthe
192.216.32.32/29subnet?
A.Router（config-if）#ipaddress192.216.32.38255.255.255.240
B.Router（config-if）#ipaddress192.216.32.39255.255.255.224C.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
QUESTION5
ThenetworkdefaultgatewayapplyingtoahostbyDHCPis192.168.5.33/28.WhichoptionisthevalidIP
addressofthishost?
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
QUESTION6
Whichtwoaddressescanbeassignedtoahostwithasubnetmaskof255.255.254.0?
（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
QUESTION7
Thenetworkadministratorhasaskedyoutocheckthestatusoftheworkstation'sIPstackbypingingthe
loopbackaddress.Whichaddresswouldyoupingtoperformthistask?
A.10.1.1.1
B.127.0.0.1
C.192.168.0.1
D.239.1.1.1
QUESTION8
WorkstationAhasbeenassignedanIPaddressof192.0.2.24/28.WorkstationBhasbeenassignedanIP
addressof192.0.2.100/28.Thetwoworkstationsareconnectedwithastraight-throughcable.Attemptsto
pingbetweenthehostsareunsuccessful.Whattwothingscanbedonetoallowcommunicationsbetween
thehosts?
（Choosetwo.）
A.Replacethestraight-throughcablewithacrossovercable.
B.Changethesubnetmaskofthehoststo/25.
C.Changethesubnetmaskofthehoststo/26.
D.ChangetheaddressofWorkstationAto192.0.2.15.
E.ChangetheaddressofWorkstationBto192.0.2.111.
QUESTION9
YourISPhasgivenyoutheaddress223.5.14.6/29toassigntoyourrouter'sinterface.Theyhavealso
givenyouthedefaultgatewayaddressof223.5.14.7.Afteryouhaveconfiguredtheaddress,therouteris
unabletopinganyremotedevices.Whatispreventingtherouterfrompingingremotedevices?
A.Thedefaultgatewayisnotanaddressonthissubnet.
B.Thedefaultgatewayisthebroadcastaddressforthissubnet.
C.TheIPaddressisthebroadcastaddressforthissubnet.
D.TheIPaddressisaninvalidclassDmulticastaddress.
QUESTION10
WhichcommandisusedtocopytheconfigurationfromRAMintoNVRAM?
A.copyrunning-configstartup-config
B.copystartup-config:
running-config:
C.copyrunningconfigstartupconfig
D.copystartupconfigrunningconfig
E.writeterminal
QUESTION11
WhichcommandisusedtoloadaconfigurationfromaTFTPserverandmergetheconfigurationinto
RAM?
A.copyrunning-config:
TFTP:
B.copyTFTP:
running-config
C.copyTFTP:
startup-config
D.copystartup-config:
TFTP:
QUESTION12
Asystemadministratortypesthecommandtochangethehostnameofarouter.WhereontheCiscoIFSis
thatchangestored?
A.NVRAM
B.RAM
C.FLASH
D.ROM
E.PCMCIA
QUESTION13
Whichcommandisusedtoconfigureadefaultroute?
A.iproute172.16.1.0255.255.255.00.0.0.0
B.iproute172.16.1.0255.255.255.0172.16.2.1
C.iproute0.0.0.0255.255.255.0172.16.2.1D.iproute0.0.0.00.0.0.0172.16.2.1
QUESTION14
IfIProutingisenabled,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
QUESTION15
WhichcommandwouldyouconfiguregloballyonaCiscorouterthatwouldallowyoutoviewdirectly
connectedCiscodevices?
A.enablecdp
B.cdpenable
C.cdprun
D.runcdp
QUESTION16
WhichcommandisusedtoseethepathtakenbypacketsacrossanIPnetwork?
A.showiproute
B.showroute
C.traceroute
D.traceiproute
QUESTION17
Whichcommandisusedtodebugapingcommand?
A.debugicmp
B.debugipicmp
C.debugtcp
D.debugpacket
QUESTION18
WhichcommanddisplaysCPUutilization?
A.showprotocols
B.showprocess
C.showsystem
D.showversion
QUESTION19
Whenconfiguringaserialinterfaceonarouter,whatisthedefaultencapsulation?
A.atm-dxi
B.frame-relay
C.hdlc
D.lapb
E.ppp
QUESTION20
Whatmustbesetcorrectlywhenconfiguringaserialinterfacesothathigher-levelprotocolscalculatethe
bestroute?
A.bandwidth
B.delay
C.load
D.reliability
QUESTION21
AcompanyimplementsvideoconferencingoverIPontheirEthernetLAN.Theusersnoticethatthe
networkslowsdown,andthevideoeitherstuttersorfailscompletely.Whatisthemostlikelyreasonfor
this?
A.minimumcellrate（MCR）
B.qualityofservice（QoS）
C.modulation
D.packetswitchingexchange（PSE）
E.reliabletransportprotocol（RTP）
QUESTION22
WhichlayerintheOSIreferencemodelisresponsiblefordeterminingtheavailabilityofthereceiving
programandcheckingtoseeifenoughresourcesexistforthatcommunication?
A.transport
B.network
C.presentation
D.session
E.application
QUESTION23
Datatransferisslowbetweenthesourceanddestination.Thequalityofservicerequestedbythetransport
layerintheOSIreferencemodelisnotbeingmaintained.Tofixthisissue,atwhichlayershouldthe
troubleshootingprocessbegin?
A.presentation
B.session
C.transport
D.network
E.physical
QUESTION24
WhichprotocolsarefoundinthenetworklayeroftheOSIreferencemodelandareresponsibleforpath
determinationandtrafficswitching?
A.LAN
B.routing
C.WAN
D.network
QUESTION25
Whichcommandrevealsthelastmethodusedtopowercyclearouter?
A.showreload
B.showboot
C.showrunning-config
D.showversion
QUESTION26
WhichthreeoptionsarevalidWANconnectivitymethods?
（Choosethree.）
A.PPP
B.WAP
C.HDLC
D.MPLS
E.L2TPv3
CCNA考试报名1700元
7F.ATM
QUESTION27
Refertotheexhibit.WhichWANprotocolisbeingused?
A.ATM
B.HDLC
C.FrameRelay
D.PPP
QUESTION28
WhatisthedifferencebetweenaCSU/DSUandamodem?
A.ACSU/DSUconvertsanalogsignalsfromaroutertoaleasedline;amodemconvertsanalogsignals
fromaroutertoaleasedline.
B.ACSU/DSUconvertsanalogsignalsfromaroutertoaphoneline;amodemconvertsdigitalsignals
fromaroutertoaleasedline.
C.ACSU/DSUconvertsdigitalsignalsfromaroutertoaphoneline;amodemconvertsanalogsignals
fromaroutertoaphoneline.
D.ACSU/DSUconvertsdigitalsignalsfromaroutertoaleasedline;amodemconvertsdigitalsignals
fromaroutertoaphoneline.
QUESTION29
Anetworkadministratormustconfigure200switchportstoaccepttrafficfromonlythecurrentlyattached
CCNA考试报名1700元
8hostdevices.WhatwouldbethemostefficientwaytoconfigureMAC-levelsecurityonalltheseports?
A.VisuallyverifytheMACaddressesandthentelnettotheswitchestoentertheswitchport-portsecurity
mac-addresscommand.
B.Haveenduserse-mailtheirMACaddresses.Telnettotheswitchtoentertheswitchport-portsecurity
mac-addresscommand.
C.Usetheswitchportport-securityMACaddressstickycommandonalltheswitchportsthathaveend
devicesconnectedtothem.
D.Useshowmac-address-tabletodeterminetheaddressesthatareassociatedwitheachportandthen
enterthecommandsoneachswitchforMACaddressport-security.
QUESTION30
WhentroubleshootingaFrameRelayconnection,whatisthefirststepwhenperformingaloopbacktest?
A.SettheencapsulationoftheinterfacetoHDLC.
B.PlacetheCSU/DSUinlocal-loopmode.
C.Enablelocal-loopmodeontheDCEFrameRelayrouter.
D.VerifythattheencapsulationissettoFrameRelay.
WhatoccursonaFrameRelaynetworkwhentheCIRisexceeded?
A.AllTCPtrafficismarkeddiscardeligible.
B.AllUDPtrafficismarkeddiscardeligibleandaBECNissent.
C.AllTCPtrafficismarkeddiscardeligibleandaBECNissent.
D.AlltrafficexceedingtheCIRismarkeddiscardeligible.
QUESTION32
WhataretwocharacteristicsofFrameRelaypoint-to-pointsubinterfaces?
（Choosetwo.）
A.Theycreatesplit-horizonissues.
B.Theyrequireauniquesubnetwithinaroutingdomain.
C.Theyemulateleasedlines.
D.Theyareidealforfull-meshtopologies.
E.TheyrequiretheuseofNBMAoptionswhenusingOSPF.
QUESTION33
Refertotheexhibit.Addresseswithintherange10.10.10.0/24arenotbeingtranslatedtothe1.128.0/16
range.Whichcommandshowsif10.10.10.0/24areallowedinsideaddresses?
A.debugipnat
B.showaccess-list
C.showipnattranslation
D.showipnatstatistics
QUESTION34
Awirelessclientcannotconnecttoan802.11b/gBSSwithab/gwirelesscard.Theclientsectionofthe
accesspointdoesnotlistanyactiveWLANclients.Whatisapossiblereasonforthis?
A.Theincorrectchannelisconfiguredontheclient.
B.Theclient'sIPaddressisonthewrongsubnet.
C.Theclienthasanincorrectpre-sharedkey.
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