宁波大学计算机网络习题集文档格式.docx
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宁波大学计算机网络习题集文档格式.docx
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B、datetime
C、segment
D、message
8.Whichisnotaconnectedendsystemdeviceintheinternet?
A、MobilePhone
B、PCserver
C、PCworkstation
D、Router
9.Allcommunicationactivitiesinnetworkaregovernedby:
B、Servers
C、Government
D、Clients
10.ForQueueingdelay,inwhichstate,averagequeuingdelaysmall:
A、La/R=0.1
B、La/R=0.9
C、La/R>
1
D、La/R>
10
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
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
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
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
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
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
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
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
9在互联网WEB应用中连接由以下哪一方发起?
B
10Processesrunningindifferenthostscommunicatewithan:
A、slottedALOHAprotocol
B、Internetroutingprotocol
C、application-layerprotocol
D、interprocesscommunication
C
1WhatisthedefaultpersistentmodelinHTTP/1.1:
A、Nonpersistentwithpipelining
B、Persistentwithpipelining
C、Persistentwithoutpipelining
D、NonpersistentHTTP
2Whichversionofhypertexttransferprotocolareusedindefaultmodenow?
D、HTTP0.9
3TheHttpserverworksonwhichport:
A、TCPportabove65535
B、UDP80
C、TCPportabove1024
D、TCP80
4HTTPmessages(application-layerprotocolmessages)exchangedbetweenbrowser(HTTPclient)andWebserver(HTTPserver)with:
A、IGMP
B、ICMP
C、UDP
D、TCP
5TheHttpclientworksonwhichport:
6ToindicatesendofmessageinHttp,wecanuse:
A、/body
B、/html
C、\ln\lf.\ln\lf
D、\ln\lf
7WhichconnectionscanbeusedbyHTTP/1.1indefaultmode?
A、p2pconnections
B、udpconnections
C、non-persistentconnections
D、persistentconnections
D
8WWWserversorganizeinformationinto:
A、WEBpages
B、RelationalDatabase
C、Distributedhypertexthypermedia
D、Yellowpages
9Httpservermaintainsnoinformationaboutpastclientrequests,Protocolsthatmaintain“state”are:
A、Simple
B、Complex
C、Security
D、Easy
10Ifyouaredownloadingawebpagewithmultipleobjectsinit,whichofthefollowingisthemostefficientway?
A、NonepersistentHTTP
B、PersistentHTTPwithpipeline
C、PersistentHTTPwithoutpipeline
D、Noneoftheabove
1Whatisnotcommunicationservicesprovidedtoappsinnetwork:
A、connectionless
B、connection-oriented
C、object-oriented
D、TransmissionControlProtocol
2Howisdatatransferredthroughnet,whatiswrong?
A、statisticalmultiplexing
B、disktodiskcopy
C、packet-switching
D、circuitswitching
3Inwhichnetwork,propagationdelaymaybegreaterthenqueuingdelay:
A、FiberNetwork
B、WireLAN
C、SatelliteNetwork
D、WIFINetwork
4Whichisnotanetworkcommunicationlinks?
A、Fiber
B、Copper
C、Subway
D、Radio
5Packet-switchednetwork'
sgoalismovingpacketsthroughroutersfromsourcetodestinationvia:
A、forward
B、store
C、drop
D、replay
6WhichPhysicalMediahaslowerrorrate?
A、TwistedPair
B、Coaxialcable
C、Fiberopticcable
D、radio
7Today’sInternetnotuse
A、TCP/IP
B、statisticalmultiplexing
C、Circuitswitching
D、Packet-switchi
8whichisnotCerfandKahn'
sinternetworkingprinciples?
A、minimalism,autonomy
B、besteffortservicemodel
C、statelessrouters
D、centralizedcontrol
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
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
1TheStatuscodeforrequestsucceededandrequestedobjectlaterinthismessageis:
A、301MovedPermanently
B、200OK
C、400BadRequest
D、404NotFound
2WhichiswronginthefollowingstatementaboutClient-serverarchicture:
A、clientscommunicatewithserver
B、clientsmayhavedynamicIPaddresses
C、clientsisalways-onhost
D、clientsdonotcommunicatedirectlywitheachother
3HTTPresponsestatuscodesofrequesteddocumentnotfoundonserver,is:
A、404
B、500
C、400
D、304
4WhichmothedtypeisnotprovidedinHTTP/1.0:
A、HEAD
B、PUT
C、POST
D、GET
5IntheWebClient/Serverworkenvironment,whoplayacontrolrole?
A、HTMLLanguage
B、WebClient
C、HTTPProtocol
D、WebServer
6IfeverypageofthesiteneedUser-serverauthorization,wecanuse:
A、NonpersistentHTTP
B、PersistentHTTP
C、ConditionalGET:
client-sidecaching
D、Cookies:
keeping“state”
7Webpageconsistsof()whichincludesseveralreferencedobjects:
A、baseHTML-file
B、homeHTML-file
C、hostHTML-file
D、referencedHTML-file
8Webservermaintainsnoinformationaboutpastclientrequests,soHTTPis:
A、unsatisfied
B、satisfied
C、stateless
D、stateful
9WhichisnotbasedonwebCaching?
A、OfflineBrowse
B、NAT
C、CDNS
D、PROXY
10InClient-serverparadigm,processsends/receivesmessagesto/fromits:
A、Firewall
B、Door
C、Socket
D、Slot
1HTTP协议的服务器端口号一般为:
A、80
B、110
C、>
1024
D、>
4096
2HTTP协议的客户端端口号一般为:
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
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?
5安全性更好的HTTP协议标准是什么?
A、HTTP2.0
B、HTTPS
C、HTML5
D、FLASH
6互联网上哪个应用不属于WEB2.0?
A、SMS
B、SNS
C、BLOG
D、FACEBOOK
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
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
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
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
1IfyouwanttofindtheserverofWWW.NBU.EDU.CN,selecttheDNSsearchtype?
A、Type=CName
B、Type=NS
C、Type=MX
D、Type=A
2WhichtypeofDNSquerycanreturnnamevalueofmailserverassociatedwithdomainname?
A、type=NS
B、type=CNAME
C、type=MX
D、type=A
3IfyouwanttobuildaContentDistributionNetworks,YoucantheDNSsearchtypeforalias:
B、Type=MX
C、Type=NS
4IfyouwanttofindtheauhoritativenameserverofdomainNBU.EDU.CN,selecttheDNSsearchtype?
5Inclienthost,weneedtoconfigIPwith:
A、Rootdomainservers
B、Top-leveldomainservers
C、AuthoritativeDNSservers
D、LocalNameServer
6Whichdomainnameiswrong?
A、cs.un.nl
B、cs.keio.ac.jp
C、eng.sun.
D、//sun/eng
7InDNS,“Idon’tknowthisname,butaskthisserver”means:
A、authoritativenameserver
B、recursivequery
C、Localnameserver
D、iteratedquery
8ThereisidentificationinDNSmessages,whichisa16bitnumberforqueryandreplytoqueryuses:
A、samenumber
B、number+1
C、number+8
D、number+16
9WhichisnotthereasonfordecentralizeDNS?
A、singlepointoffailure
B、trafficvolume
C、distantcentralizeddatabase
D、copyright
10WhichiswrongforDNS:
A、queryandreplymessages,bothwithsamemessageformat
B、distributeddbstoringresourcerecords(RR)
C、WhenahostmakesaDNSquery,queryissenttoitsRootDNSserver
D、distributeddatabaseimplementedinhierarchyofmanynameservers
1Whenftpserverreceivesfilecommand,whichopensthe2ndTCPconnectionforfiletranfer:
A、serverorclient
B、serverandclient
C、client
D、server
2FtpClientobtainsauthorizationovercontrolconnectiononport:
A、20
B、21
C、25
D、110
3WhichAPPprotocoluseseparatecontrolanddataconnectionsontoport:
A、Email110and25
B、Ftp21and20
C、Http80and808
D、Telnet25and1025
4FTPclientbrowsesremotedirectorybysendingcommandsover:
A、IPconnection
B、UDPconnection
C、dataconnection
D、controlconnection
5WhichapplicationisusuallybasedonUDPandTCPprotocol?
A、NetworkGames
B、FTPDownload
C、SendingE-mail
D、WebBrowsing
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
7Inwhich,FTPdataconnectcaninitiationfromport20onservertohightportonclient?
A、PassiveFTP
B、ActiveFTP
C、SFTP
D、TFTP
8Inwhich,FTPdataconnectcaninitiationfromhighportonclienttohighportonserver?
A、ActiveFTP
B、PassiveFTP
9WhichisnotasamplecommandsthatsentasASCIItextovercontrolchannelinFTP?
A、USER
B、PASS
C、LIST
D、HEAD
10WhichisnotaSamplereturncodesinFTP?
A、304
B、331
C、125
D、425
1IfyouwanttofindthemailserverofdomainNBU.EDU.CN,selecttheDNSsearchtype?
A、Type=MAIL
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