CCNA考試自測題1新

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1)Matchthefollowingapplicationlayerservicestotheircorrespondingtransportlayerprotocolport.(匹配下列的應用層服務和它們對應的傳輸層協(xié)議端口)：

A.SMTP1.TCP/23

B.FTP2.TCP/25

C.TFTP3.TCP/80

D.Telnet4.TCP/21

E.HTTP5.UDP/69

F.DNS6.TCP/53

2)WhichOSIreferencemodellayerdoesTelnetfunctionat(Telnet在哪一個OSI參考模型層運作)？

A.Transport

B.Network

C.Session

D.Application

3)HowmanylayersdoestheTCP/IPprotocolsuitehave,comparedtotheOSIreferencemodel(和OSI參考模型相比，TCP/IP協(xié)議具有幾層)？

A.TCPmodelhas4,OSImodelhas6

B.TCPmodelhas7,OSImodelhas8

C.TCPmodelhas4,OSImodelhas7

D.TCPmodelhas7,OSImodelhas4

4)TheTCP/IPprotocolsuitehasaformalsessionlayerthatincludesNetBIOS、RPCsandTLIfunctions(TCP/IP協(xié)議套件具有包含NetBIOS、RPC和TLI功能的一個正式的會話層)。

A.True

B.False

5)WhatisthefunctionofRPCs(RPC的功能是什么)？

A.TomovefilesfromremotePCstoalocalPC

B.Tomakeremotefunctioncallstransparent,sotheyappeartobelocal

C.ToinitializeaprogramonaremotePC

D.Tosendaprocedurethatislocaltoaremotenodeforprocessingelsewhere

6)WhatdoesRPCstandfor(RPC代表什么)？

A.Remotepersonalcomputer

B.Reserved-programmingcall

C.Routed-procedurecall

D.Remote-procedurecall

7)WhatOSIreferencemodellayerdosocketsfunctionat(套接字在OSI參考模型的哪層運作)？

A.Application

B.Presentation

C.Session

D.Transport

E.Network

F.Datalink

G.Physical

8)Whatfunctiondosocketsperform(套接字的功能是什么)？

A.Theymakeremotefunctionsappearlocal,transparenttotheuser

B.Theytransferfilestoandfromremotenodes

C.Theymakethetransportlayerindependent

D.Theyallowmultipleapplicationstosharethesameconnectiontothenetwork

9)WhatisWinSock(什么是WinSock)？

A.AversionofsocketsfortheMicrosoftWindowsplatform

B.SocketsonBSDUNIX

C.AsessionlayerAPIcommonlyconsideredtobeitsownprotocol

D.AnetworklayerserviceforMicrosoftWindows

10)WhatdoesTLIdo(TLI的作用是什么)？

A.Itmakesremotefunctionsappearlocal,transparenttotheuser

B.Ittransfersfilestoandfromremotenodes

C.Itmakesthetransportlayerindependent

D.Itallowsmultipleapplicationstosharethesameconnectiontothenetwork

11)WhatOSIlayerdoesNetBIOSfunctionat(NetBIOS在OSI哪一層運作)？

A.Application

B.Presentation

C.Session

D.Transport

E.Network

F.DataLink

G.Physical

12)WhichprotocolscanNetBIOSbindto?(Selectallthatareapplicable.)(NETBIOS可以綁定在哪個協(xié)議上，選擇全部可能的協(xié)議)？

A.Appletalk

B.IPX

C.IP

D.NetBEUI

13)WhatlayersdonotexistintheTCP/IPmodelthatareintheOSImodel(哪層不在TCP/IP模型中，但它在OSI模型中)？

A.Application,presentation,andnetwork

B.Presentation,session,anddatalink

C.Session,network,andphysical

D.Presentation,datalink,andphysical

14)Whatisasocketinthetransportlayer(傳輸層中的套接字是什么)？

A.ThesocketisanIPaddressplusaport

B.AnAPIthatmakesthetransportlayerindependent

C.AnAPIthatallowsmultipleapplicationstoshareanetworkconnection

D.Afunctionthatmakesremoteproceduresappeartobelocal

15)Whatisaport(什么是端口)？

A.AnAPIthatmakesthetransportlayerindependent

B.AnAPIthatallowsmultipleapplicationstoshareanetworkconnection

C.Afunctionthatmakesremoteproceduresappeartobelocal

D.Thepointwhereupper-layerprocessesaccesstransportlayerservices

16)Whichofthefollowingservicesusesaprocesscalledwindowing(下面的哪一個服務使用了所謂的窗口機制)？

A.Reliabledatatransfer

B.Connection-orientedvirtualcircuit

C.Bufferedtransfer

D.Resequencing

E.Multiplexing

F.Efficient,full-duplextransmission

G.Flowcontrol

17)WhatisUDP(什么是UDP)？

A.AnAPIthatmakesthetransportlayerindependent

B.Aconnectionless,unreliabletransportprotocol

C.AnAPIthatallowsmultipleapplicationstoshareanetworkconnection

D.Afunctionthatmakesremoteproceduresappeartobelocal

18)WhatisIP(什么是IP)？

A.Itisthetransportmechanismforupperlayerservices

B.ItisthesessionlayerAPIformakingthetransportlayerindependent

C.Itisthenetworklayerprotocolthatmovesdatafromonenodetoanother

D.ItisthephysicallayerprotocolforInternetconnections

19)WhatisICMP(什么是ICMP)？

A.Itisanetworklayerprotocolthathandlescontrolmessages

B.Itisanetworklayerprotocolthatresolvesaddresses

C.ItisasessionlayerAPIthatmakesremoteprocedurestransparenttoauser

D.Itisatransportlayerfunctionforunreliabletransport

20)PingsendsanICMPechocommandtoanIPaddressinordertodeterminewhetheranetworkconnectionexiststothatnode(Ping向一個IP地址發(fā)送了一個ICMP回送命令，目的是確定是否存在到那個節(jié)點的網(wǎng)絡連接)？

A.True

B.False

21)WhichofthefollowingbestdescribesTCP/IP(下面的哪句話最精確地說明白TCP/IP)？

A.Astaticprotocol

B.Aproprietaryprotocol

C.Acollectionofinternetworkingprotocols

22)UDPandTCPrepresentmechanismsusedbywhichlayeroftheTCP/IP(UDP和TCP表示了TCP/IP的哪層使用的機制)？

A.Datalinklayer

B.Physicallayer

C.Presentationlayer

D.Transportlayer

23)RPCsprovidewhichofthefollowing(RPC供應了下面的哪個功能)？

A.Connection-orientedsession

B.Transparencytomakeremotecallslooklocal

C.Portabilityofapplicationsbet