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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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
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