计算机网络英文题库（附答案）chapter.pdf

计算机网络英文题库（附答案）chapter

Chapter1ComputerNetworksandtheInternet

1．The()isaworldwidecomputernetwork,thatis,a

networkthatinterconnectsmillionsofcomputingdevices

throughouttheworld.ppt3

ApublicInternet

BIntranet

Cswitchnet

Dtelevisionnet

2．Whichkindofmediaisnotaguidedmedia?()

Atwisted-paircopperwire

Bacoaxialcable

Cfiberoptics

Ddigitalsatellitechannel

3．Whichkindofmediaisaguidedmedia?()

Ageostationarysatellite

Blow-altitudesatellite

Cfiberoptics

DwirelessLAN

4．Theunitsofdataexchangedbyalink-layerprotocolare

called().

AFrames

BSegments

CDatagrams

Dbitstreams

5．Whichofthefollowingoptionbelongstothecircuit-

switchednetworks?()

AFDM

BTDM

CVCnetworks

DbothAandB

6．()makessurethatneithersideofaconnection

overwhelmstheothersidebysendingtoomanypacketstoofast.

AReliabledatatransfer

BFlowcontrol

CCongestioncontrol

DHandshakingprocedure

7．()meansthattheswitchmustreceivetheentirepacket

beforeitcanbegintotransmitthefirstbitofthepacketontothe

outboundlink.

AStore-and-forwardtransmission

BFDM

CEnd-to-endconnection

DTDM

8．Datagramnetworksandvirtual-circuitnetworksdifferin

that().

Adatagramnetworksarecircuit-switched

networks,andvirtual-circuitnetworksare

packet-switchednetworks.

Bdatagramnetworksarepacket-switched

networks,andvirtual-circuitnetworksare

circuit-switchednetworks.

Cdatagramnetworksusedestination

addressesandvirtual-circuitnetworksuse

VC.num