最新CCNA认证考试真题.docx
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最新CCNA认证考试真题
最新CCNA认证考试真题
小编为大家收集整理了《最新CCNA认证考试真题》供大家参考，希望对大家有所帮助！
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（1）TCP/IPAddressingandProtocol
1:
YourjuniornetworkadministratorwantstoknowwhatthedefaultsubnetmaskisforaClassCIPaddress.Whatdoyoutellhim?
A.255.0.0.0
B.255.255.0.0
C.255.245.255.0
D.255.255.255.0
E.255.255.255.2552:
Anapplicationneedstohavereliable,end-to-endconnect-ivity.Whichofthefollowingprotocolswillgiveyoureliableconnectivity?
A.TCP
B.UDP
C.IP
D.ICMP3:
Youaredesigninganetwork,whichneedstosupport55users.Youdon'tplantoextendthesegmentbeyondthecurrentnumberofusers.Whichsubnetmaskwouldbestmeetyourneeds?
A.255.255.0.0
B.255.255.255.0
C.255.255.255.192
D.255.255.255.1604:
Youhaveaddedanewswitchtoyournetwork.Youwanttomanageitremotely,soyouneedtoassignitanIPaddress.YourrouterthatconnectstotheswitchhasanIPaddressof172.16.12.33/27.Whichofthefollowingaddressescanyouassigntothisswitch?
A.172.16.12.33/28
B.172.16.12.32/27
C.172.16.12.33/27
D.172.16.12.34/27
E.172.16.12.35/28
F.172.16.12.38/28
G.172.16.12.63/275:
Theaddress172.16.208.16/20isahostaddressinwhichofthefollowingsubnets?
A.172.16.176.0–255.255.240.0
B.172.16.192.0–255.255.240.0
C.172.16.208.0–255.255.240.0
D.172.16.224.0–255.255.240.06:
YouaredesigninganIPaddressschemeforyourbrandnewremoteoffice.ThevicepresidentofITcallstotellyouthatyouwillbeinchargeofthe192.168.1.64/26subnetwork.Thissuppliesyouwithasinglesubnetworkwith62hosts.Youneedtohaveatleasttwosubnetswith14hostsineachsubnet.Whatcustomsubnetmaskshouldyouuse?
A.255.255.255.128
B.255.255.255.192
C.255.255.255.224
D.255.255.255.240
E.255.255.255.2487:
Youhavesubnettedthe210.106.14.0networkwitha/24mask.YourbossatAcme,Inc.wantstoknowhowmanyusablesubnetworksandusablehostaddressespersubnetthiswouldprovide.Whatshouldyoutellher?
A.Onenetworkwith254hosts
B.Twonetworkswith128hosts
C.Fournetworkswith64hosts
D.Sixnetworkswith30hosts8:
Identifythreevalidhostaddressesinanysubnetofthe201.168.27.0network,assumingafixedsubnetmaskof255.255.255.240.（Choosethree.）
A.201.168.27.33
B.201.168.27.112
C.201.168.27.119
D.201.168.27.126
E.201.168.27.175
F.201.168.27.2089:
WhatisthesubnetworkaddressforahostwiththeIPaddress201.100.5.68/28?
A.201.100.5.0
B.201.100.5.32
C.201.100.5.64
D.201.100.5.65
E.201.100.5.31
F.201.100.5.110:
Whichofthefollowingprotocolsusesathree-wayhandshakemechanismtoestablishsessions?
A.TCP
B.IP
C.UDP
D.IPX
E.Framerelay11:
Whichofthefollowingprotocolsisconnection-oriented?
A.TCP
B.IP
C.IPX
D.Framerelay12:
YouareusinganapplicationonyourWindows2000clientmachinesthatprovideserrorcorrection.Youneedaprotocoltoprovidefasttransport.Whichprotocolshouldyourapplicationuse?
A.TCP
B.IP
C.UDP
D.SPX
E.AppleTalk13:
WhenusingTCP,afterasessionisopen,theapplicationscanadjustthenumberofsegmentstheyreceivebeforesendinganacknowledgment.Thisbehaviorisknownas______________.
A.MTUadjustment
B.Windowing
C.FlexibleSendPath
D.FCS14:
Ifthedestinationdidnotreceiveasegment,howwilltheTCPhostknowtoresendtheinformation?
A.TheACKreceivedwillnotincludethesegmentnumberthatwasnotreceived.
B.TheACKreceivedwillincludethesegmentnumberthatwasnotreceived.
C.ThesendinghostwillsendaPACKtoverifysegmentreceipt.
D.ThedestinationhostwillsendaYACKmessagebacktothesendinghost.15:
Youareplanningonusingasinglenetworkthatsupports208users.WhichIPaddressclasswouldyouchoosetobethemostefficient?
A.ClassA
B.ClassB
C.ClassC
D.ClassD
E.ClassE16:
RFC1918definestheprivateIPaddressranges.WhichofthefollowingIPaddressesareconsideredpartoftheseranges?
（Choosethree.）
A.10.23.45.67
B.126.21.34.56
C.172.16.32.1
D.172.31.234.55
E.192.169.4.517:
Anewnetworkisbeingdesignedforyourcompany,Acme,Inc.IfyouuseaClassCIPnetwork,whichsubnetmaskwillprovideoneusablesubnetperdepartmentwhileallowingenoughusablehostaddressesforeachdepartmentspecifiedinthetable?
DepartmentNumberofUsersCorporate7CustomerSupport15Financial13HR7Engineering16A.255.255.255.0
B.255.255.255.192
C.255.255.255.224
D.255.255.255.240
E.255.255.255.24818:
Whichoftheseprotocolsprovidesdatatransport,relyingontheerrorcorrectioncapabilitiesoftheapplicationitself?
A.UDP
B.TCP
C.SNMP
D.ICMP19:
WhichofthefollowingareusedbyTCPtoensurereliabledeliveryofdata?
（Choosetwo.）
A.MACaddressresolution
B.Sequencenumbers
C.Acknowledgments
D.Ping
E.Routingupdates20:
YoudiscoverthatyouareabletoadjustthewindowsizeoftheTCPsegment.Youincreasethewindowsizetotesttheresults.Whatwillyouobservehappeningonyournetwork?
A.Increasedthroughput
B.Decreasedthroughput
C.Increasedlatency
D.Decreasedreliability
21:
Yourorganizationisusingthe192.168.1.0/24addressspace.Youneed28subnets.Whatsubnetmaskwouldyouusetocreatethesesubnets?
A.255.255.255.0
B.255.255.255.128
C.255.255.255.192
D.255.255.255.224
E.255.255.255.240
F.255.255.255.24822:
WhichofthefollowingprotocolsmapsIPaddressestoMACaddressesforconnectivitytooccurbetweentwohosts?
A.ARP
B.RARP
C.SLARP
D.DHCP23:
Yourjuniornetworkadministratorcannotseemtopingahostinanothernetworkandasksyouwhyitisn'tworking.Whichofthefollowingisnotananswerthatyouwouldgivehim?
A.Thehost'sdefaultgatewayisdown.
B.Thedestinationhostisnotpoweredon.
C.TheIPaddressoftherouterinterfaceisincorrect.
D.TheIPaddressoftheswitchtowhichthedestinationhostconnectsisincorrect.
E.Thehostisinadifferentsubnet.24:
WhichofthefollowingclassesofIPaddressesisutilizedformulticasting?
A.ClassA
B.ClassB
C.ClassC
D.ClassD25:
YougiveyourITdepartmentaspreadsheetofIPaddressesandtheirsubnets.Youreceiveacallfromoneofthejuniortechsaskingwhatthe/26meansnexttotheIPaddresses.Youtellher:
A.Itrepresentsthenumberofhostspossibleonthatsubnetwork.
B.Itrepresentsthenumberofsubnetworksthatarebeingused.
C.ItrepresentstheclassofIPaddressbeingused.
D.Itrepresentsthenumberofbitsinthesubnetmaskthatare1.26:
YouaregivenanIPnetworkof192.168.5.0andtoldthatyouneedtoseparatethisnetworkintosubnetworksthatcansupportamaximumof16hostspersubnet.Thiswillhelpalleviatecongestiononthenetwork.Whatsubnetmaskcanyouusetocreatethesubnetsnecessarytomeetthegivencriteria?
A.255.0.0.0
B.255.255.0.0
C.255.255.255.0
D.255.255.255.224
E.255.255.255.24027:
WhichofthefollowingwouldaClassAnetworkbeassignedto?
A.Governmentagency
B.Small-to-mediumsizedcorporation
C.SOHO
D.Anindividual28:
AclienthastheIPaddress192.168.5.98/27.Whichofthefollowingaddressesareonthesamesubnetasthishost?
（Choosetwo.）
A.192.168.5.95
B.192.168.5.100
C.192.168.5.128
D.192.168.5.11029:
WhichofthefollowingIPaddressesisnotapublicIPaddressthatcanberoutedovertheInternet?
A.2.3.4.5
B.11.12.13.14
C.165.23.224.2
D.172.31.45.34
E.203.33.45.2230:
YouaregivenaClassBnetwork.WhatisthedefaultsubnetmaskassignedtotheClassBnetwork?
A.255.255.255.255
B.255.255.0.0
C.255.224.0.0
D.0.0.0.031:
Youaretroubleshootingyourrouter'sinterfaces.Forsomereason,theEthernetinterfacewillnotaccepttheIPaddressof192.168.5.95/27thatyou'veassigned.Whichofthefollowingexplainstherouter'srefusaltotaketheIPaddress?
A.ClassCaddressescannotbeassignedtoEthernetinterfaces.
B.The/27isaninvalidmask.
C.Itisabroadcastaddress.
D.ItisapublicIPaddress.
E.ItisaprivateIPaddress.32:
YouareanetworktechnicianatAcme,Inc.Youarerequiredtodividethe172.12.0.0networkintosubnets.Eachsubnetmusthavethecapacityof458IPaddresses.Also,accordingtotherequirements,youmustprovidethemaximumnumberofsubnets.Whichsubnetmaskshouldyouuse?
A.255.255.255.254
B.255.255.254.0
C.255.255.240.254
D.255.255.0.033:
WhatisthesubnetworkandbroadcastIPaddressof192.168.2.37withthesubnetmaskof255.255.255.248?
A.192.168.2.24/192.168.2.31
B.192.168.2.32/192.168.2.39
C.192.168.2.40/192.168.2.47
D.192.168.2.48/192.168.2.55
E.192.168.2.56/192.168.2.6334:
Oneofyourco-workersatAcme,Inc.,needstoconvertthebinarynumber11011010intoadecimal.Whatisthedecimalequivalent?
A.218
B.219
C.220
D.221
E.22235:
Oneofyourco-workersatAcme,Inc.,needstoconvertthebinarynumber01011010intoadecimal.Whatisthedecimalequivalent?
A.75
B.83
C.90
D.9736:
Oneofyourco-workersatAcme,Inc.,needstoconvertthebinarynumber11010110intoadecimal.Whatisthedecimalequivalent?
A.198
B.214
C.252
D.25537:
Oneofyourco-workersatAcme,Inc.,needstoconvertthebinarynumber10110110intoadecimal.Whatisthedecimalequivalent?
A.182
B.192
C.202
D.21238:
YouareconfiguringasubnetfortheAcme,Inc.,branchofficeinBeijing.YouneedtoassignIPaddressestohostsinthissubnet.Youhavebeengiventhesubnetmaskof255.255.255.224.WhichoftheseIPaddresseswouldbevalid?
（Choosethree.）
A.15.234.118.63
B.92.11.178.93
C.134.178.18.56
D.192.168.16.87
E.201.45.116.159
F.217.63.12.19239:
YouareanetworktechnicianatAcme,Inc.Youhavesubnettedthe208.98.112.0networkwitha/28mask.Yourbossasksyouhowmanyusablesubnetworksandusable
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