计算机网络知识题Knowledge of computer networksquestions.docx
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计算机网络知识题Knowledge of computer networksquestions.docx
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计算机网络知识题Knowledgeofcomputernetworksquestions
计算机网络知识(75题)(Knowledgeofcomputernetworks(75questions))
Comprehensivebase(computernetworkknowledge)questionbank
(atotalof75questions)
Comprehensivebasic(computernetworkknowledge)questionbank(title)2
1.1individualchoice(1pointsperquestion,36questions)2
Morethan1.2choices(2pointspersubject,7questions)10
1.3,judgetherightandwrong(1pointsperquestion,10questions)12
1.4fillintheblanks(1pointsperspace,22questions)13
1.5simpleanswer(0questions)15
Explain:
Includingthetestforms:
singleormultiple,judgment,fillintheblank,andbrieflydiscussaproblem,foreachfractionandanswerswillbegiven.
Scorestandard:
Radioandjudgeeachof1points;choose2pointsforeachquestion;fillineachblankwith1points;the5-10points,discusseseachquestion10~15.
Comprehensivebase(computernetworkknowledge)questionbank
1.1individualchoice(1pointspergame,36questions)
1.thenetworkusingtheTCP/IPprotocolisobtainedthroughthelogicandoperationoftheIPaddressandnetworkscreeningcode.Communicationbetweendifferentsubnetsmustberouted.Thesignificanceofdividingasubnetis().
A,suppressesbroadcaststormwhichpossiblyproducesinthenetwork;
B,preventhackerintrusion;
Cisgoodforrouters,sothatthenetworkisfaster;
D,facilitatecommunicationbetweennetworkusers;
Thecorrectanswer:
A
2.usuallywecalltheSWITCHHUBworkingintheOSImodel
A,physicallayer
B,datalinklayer
C,sessionlayer
D,transportlayer
Thecorrectanswer:
B
3.intheWindows95/98environment,thepingcommandistypicallyusedtocheckwhetherthetwohostscancommunicateattheIPlayer.IfthePingBIPaddressfailsontheAmachineandtherearemultipleroutersbetweentheAandtheB,thentherouterbetweentheAmachineandtheBmachinehasaproblemonwhichrouter.Usethefollowingcommand.
A,tracert
B,winipcfg
C,netstat,-r
D,route
Thecorrectanswer:
A
4.,throughthestandardnetworkinterface,thenetworkcardandnetworkcardorhubandhubdirectlyconnected,mustusethecrossnetwork,thenetworkendsoftheRJ45connector,thecentrallineisnotthesame,thedifferenceisthat.
A,1,3and2,6,twopairsoflinesareinterchanged
B,1,2and3,6,twopairsoflinesareinterchanged
C,4,5and7,8,twopairsoflinesareinterchanged
D,4,7and5,8,twopairsoflinesareinterchanged
Thecorrectanswer:
B
5.______protocolenableshostsandroutersconnectedthroughtheserialline.
A,PPP
B,RIP
C,ICMP
D,RPV
Thecorrectanswer:
A
Eachrouteronthe6.Internetmaintainsanetworkthatdescribesthereachabilityofthenetwork
Aandclasstable
Bandrelationaltables
Candroutingtable
Dandstatistics
Thecorrectanswer:
C
The7.()protocolresolvestheIPaddresstotheMACaddress
A,DNS
B,DHCP
C,Arp
D,TCP/IP
Thecorrectanswer:
C
8.,firewalls,ontheonehand,preventunauthorizedorunverifiedaccessfromprotectednetworks;ontheotherhand,allowusersoftheinternalnetworktoaccessWeborsendandreceiveE-mailovertheinternet.()
A,educationnetwork
B,enterprisenetworks
C,Internet
D,campusnetwork
Thecorrectanswer:
C
9.unicastroutingprotocolscanbedividedintointradomainroutingprotocolIGPandextraterritorialroutingprotocolEGP.WhichofthefollowingprotocolsdoesnotbelongtoIGP?
()
A,RIP
B,IGRP
C,ISIS
D,GP
Thecorrectanswer:
D
10.ifaportbelongstomultipleVLAN,thentheconnectiontothisportiscalledTrunk.ThefollowingTrunksupportsare:
()
Aand10MEthernetports
B,Catalyst1900
C,IOS,nonEnterpriseEdition
D,atalyst,2900/3500
Thecorrectanswer:
D
11.whichofthefollowingiswrongaboutthedescriptionofOSI?
.
AismadebytheorganizationofISO(InternationalStandardsOrganization).
ThebottomtwolayersofBarephysicallayeranddatalinklayer.
C,thedatapackage(packet),isthenetworklayer.
TheEandPHYareresponsiblefordatatransfer.
Thecorrectanswer:
C
12.,usingthesevenlayerOSImodel,theupperandlowerrelationsrepresentthelayerstructureofWANandLAN,andWANislocatedinthemodellower,
AndLANislocatedinthelower.
A,twolayers(data)
B,threelayer(Network)
C,fourlayers
D,fivelayers
Thecorrectanswer:
B,A
13.transferrateunit"BPS"standsfor().
A,Bytes,Per,Second
B,Bits,Per,Second
C,Baud,Per,Second
D,Billion,Per,Second
Thecorrectanswer:
B
14.Ethernetisbasedonthenetworkprototype,EthernetisIEEEasstandard.
A,timedivisionmultipleaccesscontrol(TDMA)
B,CMSA/CDmediaaccesscontrol
C,tokenpassingcontrol
D,IEEE802.1
E,IEEE802.2
F,EEE802.3
Thecorrectanswer:
B,F
The15.addressresolutionprotocol(ARP)isresponsibleforobtainingTCP/IPhostsonabroadcastnetwork.
AandIPaddresses
B,hardwareaddress
C,mask
Dgateway
Thecorrectanswer:
B
16.determinetheappropriatesubnetscreenforthegivenIPaddressrange(172.88.32.1to172.88.63.254).___
A,255.255.128.0
B,255.255.0.0
C,255.255.224.0
D,255.255.255.128
Thecorrectanswer:
C
17.inthe10BASETnetworkusingthecommontype5twistedpairandRJ45plugs,themaximumlengthofanetworksegmentis:
()
A,80meters
B,100meters
C,185meters
D,500meters
Thecorrectanswer:
B
18.intheseven-tierstructureofOSI,theprotocollayerisresponsiblefordetectingwhethertheframesareinerrorornot
A,physicallayer
B,networklayer
C,datalinklayer
D,transportlayer
Thecorrectanswer:
C
19.ofthefollowingnetworkdevicesworkonthephysicallayeroftheOSImodel
A,router
B,switch
C,repeaters
D,bridge
Thecorrectanswer:
C
20.thenetworkusingtheTCP/IPprotocolisobtainedthroughthelogicandoperationoftheIPaddressandsubnetmask.Communicationbetweendifferentsubnetsmustberouted,andthesignificanceofthesubnetis.
A,preventhackerintrusion;
B,suppressesbroadcaststormwhichpossiblyproducesinthenetwork;
C,whichfacilitatestheuseofrouters,makesthenetworkfaster;
D,facilitatecommunicationbetweennetworkusers.
Thecorrectanswer:
B
21.whichofthefollowingcommandscanbeusedtotesttheentireTCP/IPstack?
()
A,trace
B,telnet
C,Ping
E,ARP
F,stack-test
Thecorrectanswer:
B
The22.OSPFroutingupdatetakestheformof.()
A,Flooding
B,Step-by-Step
C,allroutersreceiveroutingupdatesatthesametime
D,Flash,updates
Thecorrectanswer:
A
Whatprotocolsandportsdoes23.BGPuse?
()
A,TCPport169
B,TCPport179
C,UDPport169
D,UDPport79
Thecorrectanswer:
B
Between24.BGProutersconnectedby______.()
A,TCPconnections
B,autonomoussystemnumber
C,zonenumber
DandgroupID
Thecorrectanswer:
A
Whatisthebasicrateof25.narrowbandISDN?
A,64Kbit/s
B,14Kbit/s
C,128Kbit/s
D,384Kbit/s
Thecorrectanswer:
A
26.IPaddressinpublicnetworkis129.9.100.160,whichbelongsto()address.
A,classaaddress
ClassBaddress
ClassCaddress
ClassDaddress
Thecorrectanswer:
B
The27.addressresolutionprotocol(ARP)isresponsibleforobtainingtheTCP/IPhostonthebroadcastnetwork.
AandIPaddresses
B,hardwareaddress
C,mask
Dgateway
Thecorrectanswer:
B
28.theroutingofdatagramsisin()responsibility.
A,IP
B,TCP
C,UDP
D,PPP
Thecorrectanswer:
A
29.whatarethetwobasicclassesoffirewalls:
().
Aphysicallayerandlinklayer.
Blinklayerandnetworklayer
Cnetworklayerandapplicationlayer
Dother
Thecorrectanswer:
C
30.,ausercannotaccessanydomainnameaddressafterdialingtheInternet,butPingcanaccesstheirIPaddress.Atthispoint,youshouldchecktheconfigurationofthePCmachine.
Agateway
B,Modemsettings
C,DHCPsettings
DandDNSconfiguration
Thecorrectanswer:
D
31.,allusersinaLANcandialthrougharouterandconnecttoInternet.WhenarouterdialstheInternetthroughaMODEM,severalIPaddressesarerequestedfromtheaccessserver.
A,1
B,2
C,dependingonthenumberofhouseholds
D,relatingtorouterconfiguration
Thecorrectanswer:
A
32.ifyouwanttoconnectthetwocomputerdirectlythroughatwistedpair,thecorrectlinesequenceis().
A,1--1,2--2,3--3,4--4,5--5,6--6,7--7,8--8
B,1--2,2--1,3--6,4--4,5--5,6--3,7--7,8--8
C,1--3,2--6,3--1,4--4,5--5,6--2,7--7,8--8
TheDandtwocomputerscannotbeconnecteddirectlythroughtwistedwires
Thecorrectanswer:
C
33.theapplicationPingsends()messages.
A,TCPrequest
B,TCPresponse
C,ICMPrequest
D,ICMPresponse
Thecorrectanswer:
C
The34.______protocolallowshostsandrouterstobeconnectedviaseriallines.
A,PPP
B,RIP
C,ICMP
D,ARPV
Thecorrectanswer:
A
Eachrouteronthe35.internetmaintainsone()todescribenetworkreachability.
Aandclasstable
Bandrelationaltables
Candroutingtable
Dandstatistics
Thecorrectanswer:
C
36.Whichofthefollowingvalidaddressrangesisavailablefornetworkaddress10.6.165.0andmask255.255.224.0?
()
A.10.6.165.1to10.6.165.254
B.10.6.165.0to10.6.165.255
C.10.6.160.1to10.6.191.255
D.10.6.160.1to10.6.191.254
Thecorrectanswer:
D
Morethan1.2choices(2pointspersubject,7questions)
1.whataretheadvantagesofusingasecondlayerswitchtosegmentLANsegments?
A,reducingthesizeoftheroutingtable
B,fewerconflicts
C,largerpacketsize
D,eachusergetsmorebandwidth
Thecorrectanswer:
BD
2.therearethreekindsofEthernet.Theyare.()
A,standardEthernet
B,basicEthernet
C,fast(100M)Ethernet
D,Gigabit(1000M)Ethernet
Thecorrectanswer:
ACD
3.therearemanytypesofLANs,including:
.()
A,Ethernet
Bpacketswitchingnetwork
Ctokenring
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