计算机网络英文题库附答案chapter定稿版Word格式文档下载.docx
- 文档编号:17787293
- 上传时间:2022-12-10
- 格式:DOCX
- 页数:10
- 大小:18.34KB
计算机网络英文题库附答案chapter定稿版Word格式文档下载.docx
《计算机网络英文题库附答案chapter定稿版Word格式文档下载.docx》由会员分享,可在线阅读,更多相关《计算机网络英文题库附答案chapter定稿版Word格式文档下载.docx(10页珍藏版)》请在冰豆网上搜索。
CDatagrams
Dbitstreams
5.Whichofthefollowingoptionbelongstothecircuit-switchednetworks()
AFDM
BTDM
CVCnetworks
DbothAandB
6.()makessurethatneithersideofaconnectionoverwhelmstheothersidebysendingtoomanypacketstoofast.
AReliabledatatransfer
BFlowcontrol
CCongestioncontrol
DHandshakingprocedure
7.()meansthattheswitchmustreceivetheentirepacketbeforeitcanbegintotransmitthefirstbitofthepacketontotheoutboundlink.
AStore-and-forwardtransmission
BFDM
CEnd-to-endconnection
DTDM
8.Datagramnetworksandvirtual-circuitnetworksdifferinthat().
Adatagramnetworksarecircuit-switchednetworks,andvirtual-circuitnetworksarepacket-switchednetworks.
Bdatagramnetworksarepacket-switchednetworks,andvirtual-circuitnetworksarecircuit-switchednetworks.
Cdatagramnetworksusedestinationaddressesandvirtual-circuitnetworksuseVC.numberstoforwardpacketstowardtheirdestination.
DdatagramnetworksuseVC.numbersandvirtual-circuitnetworksusedestinationaddressestoforwardpacketstowardtheirdestination.
9.Inthefollowingoptions,whichoneisnotaguidedmedia()
Atwisted-pairwire
Bfiberoptics
Ccoaxialcable
Dsatellite
10.Processingdelaydoesnotincludethetimeto().
Aexaminethepacket’sheader
Bwaittotransmitthepacketontothelink
Cdeterminewheretodirectthepacket
Dcheckbit-errorinthepacket
11.Inthefollowingfourdescriptions,whichoneiscorrect()
AThetrafficintensitymustbegreaterthan1.
BThefractionoflostpacketsincreasesasthetrafficintensitydecreases.
CIfthetrafficintensityisclosetozero,theaveragequeuingdelaywillbeclosetozero.
DIfthetrafficintensityisclosetoone,theaveragequeuingdelaywillbeclosetoone.
12.TheInternet’snetworklayerisresponsibleformovingnetwork-layerpacketsknownas()fromonehosttoanother.
Aframe
Bdatagram
Csegment
Dmessage
13.Theprotocolsofvariouslayersarecalled().
Atheprotocolstack
BTCP/IP
CISP
Dnetworkprotocol
14.Therearetwoclassesofpacket-switchednetworks:
()networksandvirtual-circuitnetworks.
Adatagram
Bcircuit-switched
Ctelevision
Dtelephone
15.Accessnetworkscanbelooselyclassifiedintothreecategories:
residentialaccess,companyaccessand()access.
Acabled
Bwireless
Ccampus
Dcityarea
Question16~17
Suppose,aistheaveragerateatwhichpacketsarriveatthequeue,Risthetransmissionrate,andallpacketsconsistofLbits,thenthetrafficintensityis(16),anditshouldnogreaterthan(17).
16.ALR/a
BLa/R
CRa/L
DLR/a
17.A2
B1
C0
D-1
18.IntheInternet,theequivalentconcepttoendsystemsis().
Ahosts
Bservers
Cclients
Drouters
19.IntheInternet,endsystemsareconnectedtogetherby().
Acopperwire
Bcoaxialcable
Ccommunicationlinks
Dfiberoptics
20.EndsystemsaccesstotheInternetthroughits().
Amodems
Bprotocols
Dsockets
21.Endsystems,packetswitches,andotherpiecesoftheInternet,run()thatcontrolthesendingandreceivingofinformationwithintheInternet.
Aprograms
Bprocesses
Capplications
Dprotocols
22.Therearemanyprivatenetworks,suchasmanycorporateandgovernmentnetworks,whosehostscannotexchangemessageswithhostsoutsideoftheprivatenetwork.Theseprivatenetworksareoftenreferredtoas().
Ainternets
BLAN
Cintranets
DWAN
23.Theinternetallows()runningonitsendsystemstoexchangedatawitheachother.
Aclientsapplications
Bserverapplications
CP2Papplications
Ddistributedapplications
24.TheInternetprovidestwoservicestoitsdistributedapplications:
aconnectionlessunreliableserviceand()service.
Aflowcontrol
Bconnection-orientedreliable
Ccongestioncontrol
DTCP
25.Itdefinestheformatandtheorderofmessagesexchangedbetweentwoormorecommunicatingentities,aswellastheactionstakenonthetransmissionand/orreceiptofamessageorotherevent.Thesentencedescribes().
AInternet
Bprotocol
Cintranet
Dnetwork
26.Inthefollowingoptions,whichdoesnotdefineinprotocol()
Atheformatofmessagesexchangedbetweentwoormorecommunicatingentities
Btheorderofmessagesexchangedbetweentwoormorecommunicatingentities
Ctheactionstakenonthetransmissionofamessageorotherevent
Dthetransmissionsignalsaredigitalsignalsoranalogsignals
27.Inthefollowingoptions,whichisdefinedinprotocol()
Atheactionstakenonthetransmissionand/orreceiptofamessageorotherevent
Btheobjectsexchangedbetweencommunicatingentities
Cthecontentintheexchangedmessages
Dthelocationofthehosts
28.Inthefollowingoptions,whichdoesnotbelongtothenetworkedge()
Aendsystems
Brouters
Cclients
Dservers
29.Inthefollowingoptions,whichbelongstothenetworkcore()
Aendsystems
30.Inthefollowingoptions,whichisnotthebundledwiththeInternet’sconnection-orientedservice
()
Areliabledatatransfer
Bguaranteeofthetransmissiontime
Cflowcontrol
Dcongestion-control
31.Anapplicationcanrelyontheconnectiontodeliverallofitsdatawithouterrorandintheproperorder.Thesentencedescribes().
Bcongestion-control
Creliabledatatransfer
Dconnection-orientedservice
32.Itmakessurethatneithersideofaconnectionoverwhelmstheothersidebysendingtoomanypacketstoofast.Thesentencedescribes().
Cconnection-orientedservice
Dreliabledatatransfer
33.IthelpspreventtheInternetfromenteringastateofgridlock.Whenapacketswitchbecomescongested,itsbufferscanoverflowandpacketlosscanoccur.Thesentencedescribes().
34.TheInternet’sconnection-orientedservicehasaname,itis().
ATCP
BUDP
CTCP/IP
DIP
35.Inthefollowingoptions,whichservicedoesnotbeprovidedtoanapplicationbyTCP()
Areliabletransport
Bflowcontrol
Cvideoconferencing
Dcongestioncontrol
36.TheInternet’sconnectionlessserviceiscalled().
37.Inthefollowingoptions,whichdoesnotuseTCP(
)
ASMTP
Binternettelephone
CFTP
DHTTP
38.Inthefollowingoptions,whichdoesnotuseUDP()
AInternetphone
Bvideoconferencing
Cstreamingmultimedia
Dtelnet
39.Therearetwofundamentalapproachestobuildinganetworkcore,()andpacketswitching.
Aelectricalcurrentswitching
Bcircuitswitching
Cdataswitching
Dmessageswitching
40.In()networks,theresourcesneededalongapathtoprovideforcommunicationbetweentheendsystemarereservedforthedurationofthecommunicationsession.
Apacket-switched
Bdata-switched
Ccircuit-switched
Dmessage-switched
41.In()networks,theresourcesarenotreserved;
asession’smessagesusetheresourcesondemand,andasaconsequence,mayhavetowaitforaccesstocommunicationlink.
Apacket-switched
42.Inacircuit-switchednetwork,ifeachlinkhasncircuits,foreachlinkusedbytheend-to-endconnection,theconnectiongets()ofthelink’sbandwidthforthedurationoftheconnection.
Aafraction1/n
Ball
C1/2
Dntimes
43.For(),thetransmissionrateofacircuitisequaltotheframeratemultipliedbythenumberofbitsinaslot.
ACDMA
Bpacket-switchednetwork
CTDM
DFDM
44.()meansthattheswitchmustreceivetheentirepacketbeforeitcanbegintotransmitthefirstbitofthepacketontotheoutboundlink.
AQueuingdelay
BStore-and-forwardtransmission
CPacketloss
DPropagation
45.Thenetworkthatforwardspacketsaccordingtohostdestinationaddressesiscalled()network.
Acircuit-switched
Bpacket-switched
Cvirtual-circuit
Ddatagram
46.Thenetworkthatforwardspacketsaccordingtovirtual-circuitnumbersiscalled()network.
Acircuit-switched
47.Inthefollowingentries,whichisnotakindofaccessnetwork(
Aresidentialaccess
Bcompanyaccess
Cwirelessaccess
Dlocalaccess
48.Supposethereisexactlyonepacketswitchbetweenasendinghostandareceivinghost.ThetransmissionratesbetweenthesendinghostandtheswitchandbetweentheswitchandthereceivinghostareR1andR2,respectively.Assumingthattheswitchusesstore-and-forwardpacketswitching,whatisthetotalend-to-enddelaytosendapacketoflengthL(Ignorequeuingdelay,propagationdelay,andprocessingdelay.)()
AL/R1+L/R2
BL/R1
CL/R2
Dnoneoftheabove
49.Thetimerequiredtoexaminethepacket’sheaderanddeterminewheretodirectthepacketispartofthe().
Aqueuingdelay
Bprocessingdelay
Cpropagationdelay
Dtransmissi
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 计算机网络 英文 题库 答案 chapter 定稿