计算机网络英文试题.docx

计算机网络英文试题.docx

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计算机网络英文试题

ComputerNetworkTestPaper

1.WhoinventedIPandsomerelatedInternetprotocols?

B

a）VintonCerfandBobMetcalfe

b）VintonCerfandRobertKahn

c）BobMetcalfeandIvanSutherland

d）BobMetcalfeandDavidClark

2.IntheOSIreferencemodel,

3.TheupperlayersoftheOSImodelare,incorrectorderB

a）Session,application,presentation

b）Session,presentation,application

c）Session,application,presentation,physical

d）Application,presentation,session

4.ThelowerlayersoftheOSImodelare,incorrectorderD

a）physical,system,network,logical

b）physical,logical,network,system

c）physical,transport,network,datalink

d）physical,datalink,network,transport

5.TheInternetProtocol（IP）generallycorrespondstowhichOSIlayer?

A

a）Network（layerthree）

b）Transport（layerfour）

c）Datalink（layertwo）

d）Session（layerfive）

6.MTUstandsforC

a）MinimumTransferUnit

b）MinimumTransmissionUnit

c）MaximumTransmissionUnit

d）MaximumTransferUnit

7.WhatlayeroftheOSImodelisdesignedtoperformerrordetectionfunctions?

B

a）Physical

b）Datalink

c）Network

d）transport

8.WhichofthesenetworkdevicesprimarilyfunctionsattheOSINetworklayer（layer3）?

C

a）Switch

b）Gateway

c）Router

d）Alloftheabove

9.Whatisthesizeoftoday’sstandard（IPv4）IPaddress?

A

a）4bytes（32bits）

b）12bytes（96bits）

c）15bytes（120bits）

d）16bytes（128bits）

10.Whatisthesizeofthenext-generation（IPv6）IPaddress?

a）4bytes（32bits）

b）12bytes（96bits）

c）15bytes（120bits）

d）16bytes（128bits）

11.Whichofthefollowinghigher-levelprotocolsrunsoverIP?

D

a）FTP

b）HTTP

c）SMTP

d）Alloftheabove

12.WhichofthefollowingIPv4addressesistheloopbackaddress?

C

a）0.0.0.0

b）10.0.0.1

c）127.0.0.1

d）255.255.255.255

13.WhichofthefollowingIPv6addressesistheloopbackaddress?

B

a）0:

:

0

b）0:

:

1

c）127:

:

0

d）127:

:

1

14.ThelengthofanIPdatagramheadercanvarydependingontheoptionsused.WhatisthesmallestpossibleIPheadersize?

B

a）16bytes

b）20bytes

c）24bytes

d）60bytes

15.ThesourceIPaddressforanIPv4datagramisstoredwhereintheheader?

C

a）2ndlongword（bytes5-8）

b）3rdlongword（bytes9-12）

c）4rdlongword（bytes13-16）

d）5rdlongword（bytes17-20）

16.ThedestinationIPaddressforanIPv4datagramisstoredwhereintheheader?

D

a）2ndlongword（bytes5-8）

b）3rdlongword（bytes9-12）

c）4rdlongword（bytes13-16）

d）5rdlongword（bytes17-20）

17.TheheaderlengthfieldinanIPv4datagramcontainsthesizeofanIPheadermeasuredinnumberofC

a）Bits

b）Bytes

c）Longwords（4bytes）

d）Noneoftheabove

18.CanIPrunoveranyotherphysicalnetworksbesidesEthernet?

D

a）No（andIPdoesnotrunoverEthernet）

b）No

c）Yes（butIPdoesnotrunoverEthernet）

d）Yes

19.WhatfunctiondoesAddressResolutionProtocol（ARP）perform?

A

a）ConvertsIPaddressestoEthernetaddresses

b）AutomaticallyassignsIPaddressestocomputers

c）PreventstwocomputersfromusingthesameIPaddress

d）Noneoftheabove

20.WhatmechanismdoesARPusetoresolveIPaddresses?

B

a）Mathematicalformula

b）Lookuptable

c）Centralwebsite

d）Randomnumbergenerator

21.WhichutilityprogramisdesignedtoreportwhetheranetworkedcomputerisrespondingatagivenIPaddress,andhowlongtheseresponsestake?

B

a）traceroute

b）ping

c）ttcp

d）netstate

22.whichoftheseshellcommandssuppliestheIPaddressofacomputerrunningtheLinuxoperatingsystem?

B

a）ipconfig

b）ifconfig

c）linuxconf

d）noneoftheabove

23.WhichofthefollowingtechnologiesmanagetheconversionbetweenIPaddressesandhostnames?

B

a）BGP

b）DNS

c）ARP

d）Alloftheabove

24.CIDRstandsforD

a）Class-basedInternetDomainRouting

b）CarefulInter-DomainRouting

c）ConstantInternetDomainRouting

d）ClasslessInter-DomainRouting

25.InCIDRnotation,whichofthefollowingnetworkscontainshost192.168.14.2?

B

a）192.168.10.0/22

b）192.168.11.0/21

c）192.168.12.0/23

d）192.168.13.0/24

26.WhichcentralauthorityisresponsibleforallocatingIPaddressesontheInternet?

B

a）IETF

b）IANA

c）IEEE

d）Noneoftheabove

27.TheIPdeliveryserviceisC

a）Reliable,connection-oriented

b）Non-routable

c）Unreliable,connectionless

d）Noneoftheabove

28.TCPstandsforA

a）TransmissionControlProtocol

b）TrivialConnectionProtocol

c）TrafficControlProtocol

d）TelephonyConnectionProtocol

29.UDPstandsforC

a）UniversalDataProtocol

b）UnreliableDatagramProtocol

c）UserDatagramProtocol

d）UltimateDataProtocol

30.BothTCPandUDPbelongtowhichlayeroftheOSImode?

B

a）Session

b）Transport

c）Network

d）DataLink

31.UDPofferswhichofthefollowingbenefitsrelativetoTCP?

A

a）UDPconsumesfewercomputerresourcesbynotmaintainingconnectionstate

b）UDPsupportsaself-regulating“throttle”featurethatpreventsnetworksaturation

c）UDPguaranteesthatIndividualpacketsofatransmissionwillarrive“inorder”

d）Noneoftheabove

32.Whatisthemaximumrecommendedlengthoftwisted-pairEthernetcablesusedinhomeorbusinessnetworks?

B

a）10meters

b）100meters

c）1000meters

d）Other

33.OnEthernetLANs,theEthernetaddressisalsoknownastheB

a）IPaddress

b）MACaddress

c）Virtualaddress

d）Other

34.HowlongisaMACaddress?

B

a）4bytes

b）6bytes

c）8bytes

d）10bytes

35.WhatisthebasicunitofEthernettraffic?

B

a）File

b）Frame

c）Packet

d）Stream

36.CSMA/CDstandsforA

a）CarrierSenseMultipleAccesswithCollisionDetection

b）CollisionSenseMultipleAccesswithCarrierDetection

c）CarrierSingle-MultipleAccesswithCollisionDetection

d）CollisionSingle-MultipleAccesswithCarrierDetection

37.Whichofthefollowingisaroutingprotocol?

a）ARP

b）DNS

c）BGP

d）SMTP

38.Whichofthefollowingalgorithmhasthesocalledcount-to-infinityproblem?

C

a）Floodingalgorithm

b）Link-statealgorithm

c）Distancevectoralgorithm

d）Noneoftheabove

39.WhichofthefollowingalgorithmdoesBGPuse?

C

a）Floodingalgorithm

b）Link-statealgorithm

c）Distancevectoralgorithm

d）Noneoftheabove

40.WhichofthefollowingprotocoldoesICMPrunover?

C

a）TCP

b）UDP

c）IP

d）Ethernet

41.WhichofthefollowingdescribestheTCPconnectionestablishingmechanism?

C

a）One-way-handshake

b）Two-way-handshake

c）Three-way-handshake

d）Four-way-handshake