计算机网络原理知到智慧树章节测试课后答案2024年秋天津理工大学

计算机网络原理知到智慧树章节测试课后答案2024年秋天津理工大学绪论单元测试

本课程采用“自顶向下”的方式讲解计算机网络原理。

A:错B:对

答案:对

第一章单元测试

Thewebserverisnotanendsystem?

A:错B:对

答案:错TheupperlayersoftheOSImodelare()incorrectorder.

A:Application,presentation,sessionB:Session,presentation,applicationC:Session,application,presentationD:Session,application,presentation,physical

答案:Session,presentation,applicationThelowerlayersoftheOSImodelare()incorrectorder.

A:physical,transport,network,datalinkB:physical,logical,system,networkC:physical,system,network,logicalD:physical,datalink,network,transport

答案:physical,datalink,network,transportTheInternetProtocol(IP)generallycorrespondstowhichOSIlayer?

A:Network(layerthree)B:Session(layerfive)C:Datalink(layertwo)D:Transport(layerfour)

答案:Network(layerthree)WhichofthesenetworkdevicesprimarilyfunctionsattheOSINetworklayer(layer3)?

A:AlloftheaboveB:RouterC:GatewayD:Switch

答案:Router

第二章单元测试

TCPisanapplicationlayerprotocol.

A:对B:错

答案:错Whichisnotanapplicationlayerprotocol?()

A:DNSB:ARPC:FTPD:HTTP

答案:ARPTheonlyarchitectureofapplicationsispeer-to-peer.

A:对B:错

答案:错Intheclient-serverarchitecture,theclientsisnotalwayson.

A:对B:错

答案:对Mailserverportnumberis()

A:80B:403C:25D:81

答案:25

第三章单元测试

ThePOP3protocolrunsover____andusesport____.

A:UDP110B:TCP25C:UDP25D:TCP110

答案:TCP110____ismostusedforerrorreporting.

A:FTPB:ICMPC:UDPD:SMTP

答案:ICMPInthefollowingoptions,whichdoesnotuseUDP?

A:videoconferencingSB:InternetphoneC:streamingmultimediaD:telnet

答案:telnetInternettransport-layerprotocolsincludeTCP,IPandUDP.

A:错B:对

答案:错TCPsenderperceivecongestionthroughatimeouteventorareceivingduplicateACK-sevent.

A:错B:对

答案:对

第四章单元测试

RARPprotocoltranslatesIPaddressesintoMACaddresses.

A:错B:对

答案:错ThePINGcommandisimplementedbytheICMPechorequest/reply.

A:错B:对

答案:对AnIPaddressconsistsofanetworknumberfieldandahostnumberfield.

A:错B:对

答案:对ThemaintaskoftheInternet’sDomainNameSystem(DNS)isto:

A:Translatemnemonic（记忆的）namestoIPaddressesB:ProvideanauthorityforregisteringdomainnamesC:TranslateportnumberstoIPaddressesD:SpecifythestandardsforInternetdomainnames

答案:Translatemnemonic（记忆的）namestoIPaddressesTheInternet’snetworklayerisresponsibleformovingnetwork-layerpacketsknownas()fromonehosttoanother.

A:messageB:frameC:segmentD:datagram

答案:datagram

第五章单元测试

MACaddressisuniqueintheworld.

A:对B:错

答案:对A16-portswitch,eachportis10/100Mfull-duplexadaptive,thenbusbandwidthoftheswitchis()

A:3.2GB:10MC:1.6GD:100M

答案:100MTheswitchreceivesaframewhosetargeaddresscannotbefoundinitsMACaddresstable,thenswitchwilldo()

A:floodingB:sendbackC:discardD:forward

答案:floodingWhatistrueoftheARPtableinthefollowingdescriptionis?

A:routingselectionB:reducenetworktrafficC:errordetectionD:mappingofIPaddresstoMACaddress

答案:mappingofIPaddresstoMACaddressWhichlayerdoestheswitchworkon?

A:networklayerB:applicationlayerC:linklayerD:transportlayer

答案:linklayer

第六章单元测试

Therearetwoaddressfieldsin802.11frame.

A:对B:错

答案:错Whatarethetypeofwirelessnetworks?

A:Multi-hop,infrastructure-lessB:Multi-hop,infrastructure-basedC:Singlehop,infrastructure-lessD:Singlehop,infrastructure-based

答案:Multi-hop,infrastructure-less；Multi-hop,infrastructure-based；Singlehop,infrastructure-less；Singlehop,infrastructure-basedHostsinwirelessnetworkscanworkintwomodes()

A:adhocmodeB:offlinemodeC:infrastructuremodeD:onlinemode

答案:adhocmode；infrastructuremodeAPstransmitbeaconframes.AnAP’sbeaconframeswillbetransmittedoveroneofthe()channels.Thebeaconframespermitnearby