计算机网络英文题库(附答案)chapter3

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Chapter3TransportLayer 1.Atransport-layerprotocolprovidesforlogicalcommunicationbetween____. AApplicationprocesses BHosts CRouters DEndsystems 2.Transport-layerprotocolsrunin____. AServers BClients CRouters DEndsystems 3.Intransportlayer,thesendsidebreaksapplicationmessagesinto____,passesto networklayer. AFrames BSegments CData-grams Dbitstreams 4.Servicesprovidedbytransportlayerinclude____. AHTTPandFTP BTCPandIP CTCPandUDP DSMTP 5.WhichofthefollowingservicesisnotprovidedbyTCP? ADelayguaranteesandbandwidthguarantees BReliabledatatransfersandflowcontrols CCongestioncontrols DIn-orderdatatransfers .Thesetwominimaltransport-layerservices----____and____----aretheonlytwo 6 servicesthatUDPprovides! Aprocess-to-processdatadelivery,errorchecking Bcongestioncontrol,reliabledatatransfer Cflowcontrol,congestioncontrol DIn-orderdatatransfer,errorchecking 7.Portnumber’sscopeis____to____. A0,1023 B0,65535 C0,127 D0,255 .Theportnumbersrangingfrom____to____arecalledwell-knownportnumber 8 andarerestricted. A0,1023 B0,65535 C0,127