宁波大学计算机网络习题集.docx
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宁波大学计算机网络习题集
1.Incommunicationlinks,transmissionratemeans:
A、Bandwidth
B、propagationspeed
C、processspeed
D、routerdelays
正确答案:
A
2.AllcommunicationactivitiesinInternetaregovernedby:
A、Protocols
B、WebMaster
C、Client
D、ChinaTelecom
正确答案:
A
3.Thecenterofinternetstructureis:
A、Tier-1ISPs
B、LocalISPs
C、RootDNS
D、NAP
正确答案:
A
4.Whencongestoccurinnetwork,whichdelaybecomelarge?
A、propagationdelay
B、queuingdelay
C、transmissiondelay
D、processingdelay
正确答案:
B
5.Theinternetprotocolsnotdefine:
A、orderofmessages
B、actionstaken
C、format
D、price
正确答案:
D
6.Theinternetprotocolsnotdefine:
A、actionstaken
B、orderofmessages
C、hacker
D、format
正确答案:
C
7.WhichisnotthetypesofprotocoldataunitinTCP/IP?
A、frame
B、datetime
C、segment
D、message
正确答案:
B
8.Whichisnotaconnectedendsystemdeviceintheinternet?
A、MobilePhone
B、PCserver
C、PCworkstation
D、Router
正确答案:
D
9.Allcommunicationactivitiesinnetworkaregovernedby:
A、Protocols
B、Servers
C、Government
D、Clients
正确答案:
A
10.ForQueueingdelay,inwhichstate,averagequeuingdelaysmall:
A、La/R=0.1
B、La/R=0.9
C、La/R>1
D、La/R>10
正确答案:
A
1应用层中的数据块常被称为:
A、比特流
B、帧
C、分组
D、消息
正确答案:
D
2在TCP/IP层次协议中,传输层向应用层提供的接口是哪一个?
A、Put
B、Port
C、Socks
D、Socket
正确答案:
D
3下列哪一组协议属于应用层协议?
A、ICMP,RARP,ARP
B、FTP,SMIP,TELNET
C、ARP,IP,UDP
D、IP,TCP,UDP
正确答案:
B
4在互联网WEB应用中以下哪一项扮演了控制角色?
A、HTML语言
B、Web客户端
C、HTTP协议
D、Web服务器
正确答案:
C
5下面哪一个特征是HTTP协议所不具备的:
A、面向对象
B、客服机/服务器
C、无连接
D、无状态
正确答案:
C
6IE8.0浏览器默认使用的超文本传输协议是哪一个版本?
A、WEB2.0
B、HTTP1.0
C、HTTP1.1
D、HTTP2.0
正确答案:
C
7在HTTP协议中,每一个对象的地址都可以标识为:
A、UDP
B、UML
C、UTP
D、URL
正确答案:
D
8HTTP需要浏览器在每一个请求中递交认证信息,这是因为HTTP协议的哪一个特性?
A、面向连接
B、无连接
C、分布式
D、无状态
正确答案:
D
9在互联网WEB应用中连接由以下哪一方发起?
A、HTML语言
B、Web客户端
C、HTTP协议
D、Web服务器
正确答案:
B
10Processesrunningindifferenthostscommunicatewithan:
A、slottedALOHAprotocol
B、Internetroutingprotocol
C、application-layerprotocol
D、interprocesscommunication
正确答案:
C
1WhatisthedefaultpersistentmodelinHTTP/1.1:
A、Nonpersistentwithpipelining
B、Persistentwithpipelining
C、Persistentwithoutpipelining
D、NonpersistentHTTP
正确答案:
B
2Whichversionofhypertexttransferprotocolareusedindefaultmodenow?
A、WEB2.0
B、HTTP1.0
C、HTTP1.1
D、HTTP0.9
正确答案:
C
3TheHttpserverworksonwhichport:
A、TCPportabove65535
B、UDP80
C、TCPportabove1024
D、TCP80
正确答案:
D
4HTTPmessages(application-layerprotocolmessages)exchangedbetweenbrowser(HTTPclient)andWebserver(HTTPserver)with:
A、IGMP
B、ICMP
C、UDP
D、TCP
正确答案:
D
5TheHttpclientworksonwhichport:
A、TCPportabove65535
B、UDP80
C、TCPportabove1024
D、TCP80
正确答案:
C
6ToindicatesendofmessageinHttp,wecanuse:
A、/body
B、/html
C、\ln\lf.\ln\lf
D、\ln\lf
正确答案:
D
7WhichconnectionscanbeusedbyHTTP/1.1indefaultmode?
A、p2pconnections
B、udpconnections
C、non-persistentconnections
D、persistentconnections
正确答案:
D
8WWWserversorganizeinformationinto:
A、WEBpages
B、RelationalDatabase
C、Distributedhypertexthypermedia
D、Yellowpages
正确答案:
A
9Httpservermaintainsnoinformationaboutpastclientrequests,Protocolsthatmaintain“state”are:
A、Simple
B、Complex
C、Security
D、Easy
正确答案:
B
10Ifyouaredownloadingawebpagewithmultipleobjectsinit,whichofthefollowingisthemostefficientway?
A、NonepersistentHTTP
B、PersistentHTTPwithpipeline
C、PersistentHTTPwithoutpipeline
D、Noneoftheabove
正确答案:
B
1Whatisnotcommunicationservicesprovidedtoappsinnetwork:
A、connectionless
B、connection-oriented
C、object-oriented
D、TransmissionControlProtocol
正确答案:
C
2Howisdatatransferredthroughnet,whatiswrong?
A、statisticalmultiplexing
B、disktodiskcopy
C、packet-switching
D、circuitswitching
正确答案:
B
3Inwhichnetwork,propagationdelaymaybegreaterthenqueuingdelay:
A、FiberNetwork
B、WireLAN
C、SatelliteNetwork
D、WIFINetwork
正确答案:
C
4Whichisnotanetworkcommunicationlinks?
A、Fiber
B、Copper
C、Subway
D、Radio
正确答案:
C
5Packet-switchednetwork'sgoalismovingpacketsthroughroutersfromsourcetodestinationvia:
A、forward
B、store
C、drop
D、replay
正确答案:
A
6WhichPhysicalMediahaslowerrorrate?
A、TwistedPair
B、Coaxialcable
C、Fiberopticcable
D、radio
正确答案:
C
7Today’sInternetnotuse
A、TCP/IP
B、statisticalmultiplexing
C、Circuitswitching
D、Packet-switchi
正确答案:
C
8whichisnotCerfandKahn'sinternetworkingprinciples?
A、minimalism,autonomy
B、besteffortservicemodel
C、statelessrouters
D、centralizedcontrol
正确答案:
D
9包交换中丢失的包去哪了?
A、缓存在路由器
B、在传输媒体上飞
C、在上一个路由器
D、彻底消失了
正确答案:
D
10包交换中丢失的包会阻塞网络吗?
A、会
B、不会
C、不确定
D、真不知道
正确答案:
B
1TheStatuscodeforrequestsucceededandrequestedobjectlaterinthismessageis:
A、301MovedPermanently
B、200OK
C、400BadRequest
D、404NotFound
正确答案:
B
2WhichiswronginthefollowingstatementaboutClient-serverarchicture:
A、clientscommunicatewithserver
B、clientsmayhavedynamicIPaddresses
C、clientsisalways-onhost
D、clientsdonotcommunicatedirectlywitheachother
正确答案:
C
3HTTPresponsestatuscodesofrequesteddocumentnotfoundonserver,is:
A、404
B、500
C、400
D、304
正确答案:
A
4WhichmothedtypeisnotprovidedinHTTP/1.0:
A、HEAD
B、PUT
C、POST
D、GET
正确答案:
B
5IntheWebClient/Serverworkenvironment,whoplayacontrolrole?
A、HTMLLanguage
B、WebClient
C、HTTPProtocol
D、WebServer
正确答案:
C
6IfeverypageofthesiteneedUser-serverauthorization,wecanuse:
A、NonpersistentHTTP
B、PersistentHTTP
C、ConditionalGET:
client-sidecaching
D、Cookies:
keeping“state”
正确答案:
D
7Webpageconsistsof()whichincludesseveralreferencedobjects:
A、baseHTML-file
B、homeHTML-file
C、hostHTML-file
D、referencedHTML-file
正确答案:
A
8Webservermaintainsnoinformationaboutpastclientrequests,soHTTPis:
A、unsatisfied
B、satisfied
C、stateless
D、stateful
正确答案:
C
9WhichisnotbasedonwebCaching?
A、OfflineBrowse
B、NAT
C、CDNS
D、PROXY
正确答案:
B
10InClient-serverparadigm,processsends/receivesmessagesto/fromits:
A、Firewall
B、Door
C、Socket
D、Slot
正确答案:
C
1HTTP协议的服务器端口号一般为:
A、80
B、110
C、>1024
D、>4096
正确答案:
A
2HTTP协议的客户端端口号一般为:
A、80
B、110
C、>1024
D、>4096
正确答案:
C
3Http1.1中持续/流水线模式时,可以同时传多个对象吗?
A、不可以
B、可以
C、不知道
D、不确定
正确答案:
4Http1.1中持续/流水线模式时,可以同时在一个socket中传输多个对象吗?
A、不可以
B、可以
C、不知道
D、不确定
正确答案:
A
5安全性更好的HTTP协议标准是什么?
A、HTTP2.0
B、HTTPS
C、HTML5
D、FLASH
正确答案:
B
6互联网上哪个应用不属于WEB2.0?
A、SMS
B、SNS
C、BLOG
D、FACEBOOK
正确答案:
A
7Proxy服务器在实现上主要是利用了什么方法?
A、条件更新
B、条件请求
C、动态DNS
D、动态IP
正确答案:
B
8一个HTTP报文的大小可能是多大?
A、小于1480字节
B、小于64K字节
C、大于64K字节
D、理论上无限制
正确答案:
D
9IE8浏览器下允许并发的连接数可能是多少?
A、1
B、2
C、4
D、8
正确答案:
C
10下述哪个方法不能向服务器递交信息?
A、head
B、get
C、put
D、post
正确答案:
A
1IfyouwanttofindtheserverofWWW.NBU.EDU.CN,selecttheDNSsearchtype?
A、Type=CName
B、Type=NS
C、Type=MX
D、Type=A
正确答案:
D
2WhichtypeofDNSquerycanreturnnamevalueofmailserverassociatedwithdomainname?
A、type=NS
B、type=CNAME
C、type=MX
D、type=A
正确答案:
C
3IfyouwanttobuildaContentDistributionNetworks,YoucantheDNSsearchtypeforalias:
A、Type=CName
B、Type=MX
C、Type=NS
D、Type=A
正确答案:
A
4IfyouwanttofindtheauhoritativenameserverofdomainNBU.EDU.CN,selecttheDNSsearchtype?
A、Type=CName
B、Type=NS
C、Type=MX
D、Type=A
正确答案:
B
5Inclienthost,weneedtoconfigIPwith:
A、Rootdomainservers
B、Top-leveldomainservers
C、AuthoritativeDNSservers
D、LocalNameServer
正确答案:
D
6Whichdomainnameiswrong?
A、cs.un.nl
B、cs.keio.ac.jp
C、
D、/com/sun/eng
正确答案:
D
7InDNS,“Idon’tknowthisname,butaskthisserver”means:
A、authoritativenameserver
B、recursivequery
C、Localnameserver
D、iteratedquery
正确答案:
D
8ThereisidentificationinDNSmessages,whichisa16bitnumberforqueryandreplytoqueryuses:
A、samenumber
B、number+1
C、number+8
D、number+16
正确答案:
A
9WhichisnotthereasonfordecentralizeDNS?
A、singlepointoffailure
B、trafficvolume
C、distantcentralizeddatabase
D、copyright
正确答案:
D
10WhichiswrongforDNS:
A、queryandreplymessages,bothwithsamemessageformat
B、distributeddbstoringresourcerecords(RR)
C、WhenahostmakesaDNSquery,queryissenttoitsRootDNSserver
D、distributeddatabaseimplementedinhierarchyofmanynameservers
正确答案:
C
1Whenftpserverreceivesfilecommand,whichopensthe2ndTCPconnectionforfiletranfer:
A、serverorclient
B、serverandclient
C、client
D、server
正确答案:
A
2FtpClientobtainsauthorizationovercontrolconnectiononport:
A、20
B、21
C、25
D、110
正确答案:
B
3WhichAPPprotocoluseseparatecontrolanddataconnectionsontoport:
A、Email110and25
B、Ftp21and20
C、Http80and808
D、Telnet25and1025
正确答案:
B
4FTPclientbrowsesremotedirectorybysendingcommandsover:
A、IPconnection
B、UDPconnection
C、dataconnection
D、controlconnection
正确答案:
D
5WhichapplicationisusuallybasedonUDPandTCPprotocol?
A、NetworkGames
B、FTPDownload
C、SendingE-mail
D、WebBrowsing
正确答案:
A
6在下面列出的TCP/IP命令中,哪一个可以被用来远程登录主机?
A、telnet
B、ftp
C、login
D、tftp
正确答案:
A
7Inwhich,FTPdataconnectcaninitiationfromport20onservertohightportonclient?
A、PassiveFTP
B、ActiveFTP
C、SFTP
D、TFTP
正确答案:
B
8Inwhich,FTPdataconnectcaninitiationfromhighportonclienttohighportonserver?
A、ActiveFTP
B、PassiveFTP
C、SFTP
D、TFTP
正确答案:
B
9WhichisnotasamplecommandsthatsentasASCIItextovercontrolchannelinFTP?
A、USER
B、PASS
C、LIST
D、HEAD
正确答案:
D
10WhichisnotaSamplereturncodesinFTP?
A、304
B、331
C、125
D、425
正确答案:
A
1IfyouwanttofindthemailserverofdomainNBU.EDU.CN,selecttheDNSsearchtype?
A、Type=MAIL
B、Type=NS
C、Typ