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ID:38653955
大小:98.73 KB
页数:4页
时间:2019-06-17
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1、总分一二三四五……………○……………密……………○……………封……………○…………线………………………………学 院班 级学 号姓 名 课程名称:计算机网络(ComputerNetworks)()10.Withrespecttoprotocollayer,theARPprotocolinTCP/IPcorrespondsto:A.physicallayerB.datalinklayerC.networklayerD.transportlayer()11.ThelowerlayerofOSPFproto
2、coluses:A.UDPB.TCPC.ARPD.IP()12.WhichportonseverdoesthePOP3protocoluse?A.20B.23C.25D.110()13.Whatisthemaskforasmallestsubnetusableinpractice?A.255.255.255.0B.255.255.255.254C.255.255.255.252D.255.255.255.255()14.WhichofthefollowingIPaddressCANNOTbeassignedtoahos
3、t?A.141.107.255.80/16B.201.255.0.11/24C.116.1.0.255/16D.198.121.254.255/24()15.WheninstallingaMODEMtoaPC,theinterfacestandardwetakeis:A.X.25B.RJ11C.RS232D.RJ45()16.WhichofthefollowingisNOTanadvantageofalayermodel?A.Dividingthecomplexnetworkoperationintoamoremana
4、geablelayerapproach.B.Allowingchangestooccurinonelayerwithouthavingtochangealllayers.C.Allowingchangestooccurinalllayerswithouthavingtochangeonelayer.D.Definingastandardinterfacefortheplug-and-playmultivendorintegration.()17.HowmanybitsarethereforanEthernetMACad
5、dress?A.32B.48C.64D.128()18.Theprotocolfortwocomputerstotransportfilesis:A.FTPB.WWWC.TelnetD.SMTP()19.TheInternetcanbetracedbacktoitsorigin:A.ARPANETB.ALOHAC.NEFNETD.Ethernet()20.WhichofthefollowingIPv6addressiscorrect?A.2001:::8::417AB.12.20.3.3:0:0:0:0:0:FFFFC
6、.::145.20.15.29D.145.20.15.29:: ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄ Ⅰ.MultipleChoice(20points,1pointforeach)Directions:Choosethecorrectanswerforeachquestionandfillitinthecorrespondingblank.ThereisONLYONEcorrectanswerforeachquest
7、ion.()1.Therearetwokindsofcoaxialcablesusuallyused.Oneisthebasebandcableandtheotheristhebroadbandcable.Theimpedanceofthebasebandcableis:A.50ΩB.70ΩC.75ΩD.90Ω()1.Therearetwokindsofcoaxialcablesusuallyused.Oneisthebasebandcableandtheotheristhebroadbandcable.Theimpe
8、danceofthebasebandcableis:A.50ΩB.70ΩC.75ΩD.90Ω()2.AccordingtotheISO/OSIreferencemodel,theEthernetswitchworkson:A.DatalinklayerB.NetworklayerC.TransportlayerD.Presenta
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