网络工程师英语复习练习题10套.docVIP

软件水平考试网络工程师英语复习练习题10套

第1套

ISDN,whichstandsforIntegratedServicesDigitalNetwork,isasystemofdigitalphoneconnections,whichhasbeenavailableforoveradecade.Thissystemallowsdatatobetransmittedsimultaneouslyacrosstheworldusing(1)digitalconnectivity.WithISDN,voiceanddataarecarriedbybearerchannelsoccupyingabandwithof(2)(bitspersecond).SomeswitcheslimitBchannelstocapacityof56Kbps.Adatachannel(3)handlessignalingat16Kbpsor64Kbps,dependingon(4).Notethat,inISDNterminology,”k”means(5),andnot1024(2^10)asinmanycomputerapplications.therefore,a64Kbpschannelcarriesdataatarateof64000bps.Anewsetofstandardprefixeshasrecentlybeencreatedtohandlethis.Underthisscheme,”K”(Kilo)means1000(10^3),”M”(Mega)means1000000(10^6),andsoon,and“Ki”(Kibi)means1024(2^10),”Mi”(Mebi)means1048576(2^20).andsoon。

(1).A.Multi-endsB.circleC.indirectD.end-to-end

(2).A.34KbpsB.84KbpsC.64KbpsD.54Kbps

(3).A.DchannelB.AchannelC.BchannelD.Cchannel

(4).A.themethodB.thenumberC.theservicetypeD.theusertype

(5).A.100000(10^5)B.1000(10^3)C.10000(10^4)D.100(10^2)

答案:

1:D,2:C,3:A,4:C,5:B

第2套

Bluetoothisauniversalradiointerfaceinthe(1)frequencybandthatenablesportablecelectronicdevices(2)connectandcommunicate(3)viashortrange,adhocnetworks.Eachunitcansimultaneouslycommunicatewithupto(4)otherunitsperpiconet.Moreover,eachunitcansimultaneously(5)toseveralpiconets,BluetoothtechnologywhichapartfromEricsson,hasgainedthesupportofNokia,IBM,Toshiba,Intelandmanyothermanufactures,eliminatestheneedforwires,cablesandconnectorsforandbetweencordlessormobilephones,modems,headsets,PDAs,Computes,printers,progjectors,localaresnetworks,andsoon,andpavesthewayfornewandcompletelydifferentdevicesandapplications.

(1).A.2.45GHzB.4.45GHzC.2.95GHzD.3.45GHz

(2).A.inB.onC.toD.with

(3).A.narro