计算机网络教程自顶向下方法选择题及答案 Chapt 2 Application LayerQUIZWord格式.docx

计算机网络教程自顶向下方法选择题及答案 Chapt 2 Application LayerQUIZWord格式.docx

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D）theclientmustberunningallthetimebuttheserverneedstoberunningonlywhenitisneeded

3.

ThefirstsectionofaURLidentifieristhe__________.

A）protocol

B）path

C）host

D）port

4.

A_______documentisafixed-contentdocumentthatiscreatedandstoredinaserver.Theclientcangetacopyofthedocumentonly.

A）static

B）dynamic

C）active

D）Noneofthechoicesarecorrect

5.

_____________isalanguageforcreatingastaticdocument.

A）ExtensibleStyleLanguage（XSL）

B）HypertextMarkupLanguage（HTML）

C）ExtensibleMarkupLanguage（XML）

D）Allchoicesarecorrect

6.

A_______documentiscreatedbyaWebserverwheneverabrowserrequeststhedocument.

7.

Formanyapplications,weneedaprogramorascripttoberunattheclientsite.Thesearecalled_______________documents.

8.

HTTPusestheservicesof_________.

A）UDP

B）IP

C）TCP

D）DNS

9.

InHTTP,thefirstlineinarequestmessageiscalleda_______line;

thefirstlineintheresponsemessageiscalledthe________line.

A）request;

response

B）status;

C）status;

status

10.

Ina___________connection,oneTCPconnectionismadeforeachrequest/response.

A）persistent

B）nonpersistent

C）persistentoranonpersistent

11.

Ina___________connection,theserverleavestheconnectionopenformorerequestsaftersendingaresponse.

C）persistentornonpersistent

12.

InHTTP,_______serverisacomputerthatkeepscopiesofresponsestorecentrequests.

A）aregular

B）aproxy

C）anauxiliary

D）aremote

13.

AnHTTPrequestmessagealwayscontains_______.

A）aheaderlineandabody

B）arequestlineandaheaderline

C）arequestline,aheaderline,andabody

D）arequestline,aheaderline,ablankline,andabody

14.

WhichofthefollowingispresentinbothanHTTPrequestlineandastatusline?

A）versionnumber

B）URL

C）statuscode

D）method

15.

FTPusestheservicesof________.

D）noneofthechoicesarecorrect

16.

InFTP,_________well-knownport（s）is（are）used.

A）one

B）two

C）three

D）four

17.

DuringanFTPsessionthecontrolconnectionisopened_______.

A）once

B）twice

C）manytimes

18.

DuringanFTPsessionthedataconnectionmaybeopened_______.

A）onlyonce

B）onlytwotimes

C）asmanytimesasneeded

19.

InFTP,afilecanbeorganizedintorecords,pages,orastreamofbytes.Thesearetypesofanattributecalled_______.

A）filetypes

B）datastructures

C）transmissionmodes

20.

InFTP,therearethreetypesof_______:

stream,block,andcompressed.

B）datatypes

21.

InFTP,ASCII,EBCDIC,andimagedefineanattributecalled_______.

A）filetype

B）datastructure

C）transmissionmode

22.

InFTP,whenwe_______,itiscopiedfromtheclienttotheserver.

A）retrieveafile

B）storeafile

C）openafile

23.

Inthecommonscenario,theelectronicmailsystemneeds_________________________.

A）twoUAs,twoMTAsandoneMAA

B）twoUAs,twoMTAsandtwoMAAs

C）twoUAs,twopairsofMTAsandapairofMAAs

D）twoUAs,twopairsofMTAsandatwopairsofMAAs

24.

________providesservicetotheusertomaketheprocessofsendingorreceivingamessageeasier.

A）AnMTA

B）AnMAA

C）AUA

25.

Ane-mailmessagecontainsthe________andthe__________.

A）header;

envelop

B）header;

body

C）envelop;

26.

IntheInternet,ane-mailaddressconsistsoftwoparts:

a_______anda_______.

A）localpart;

domainname

B）globalpart;

C）label;

D）localpart;

label

27.

_________isasupplementaryprotocolthatallowsnon-ASCIIdatatobesentthroughe-mail.

A）SMPT

B）MPEG

C）MIME

D）POP

28.

TheformalprotocolthatdefinestheMTAclientandserveri