计算机专业英语(专升本)

1.(单选题)Inpacketswitchingthemessageisintoseveralpiecesofagivenmaximumlength,calledpackets.()(本题2.5分)A.brokenawayB.brokenoutC.brokenoffD.brokenup答案:D解析:无2.(单选题)TheGSMtechnicalspecificationsaredesignedtoworkotherstandards,e.g.ISDN.()(本题2.5分)A.inconcertwithB.inrelationtoC.offhandD.inadditionto答案:A解析:无3.(单选题)LSItechnologyandmassproductioncontributetoreducedcostinthenearfutureanaverage-incomefamilyshouldbeabletoaffordamobiletelephoneunit.()(本题2.5分)A.whichB.thatC.whenD.sothat答案:D解析:无4.(单选题)Theresearcherswhoproducedthefirstcladglassopticalfibreswerenotthinkingofthemforcommunications.()(本题2.5分)A.useB.usedC.usingD.touse答案:C解析:无5.(单选题)TheVC-4isallowedwithinthepayloadcapacityprovidedbytheSTM-1frames.()(本题2.5分)A.tofloatB.floatC.floatedD.floating答案:A解析:无6.(单选题)ForSDHtobecompatibleexistingtechnologyitmustbeabletocarryexistingcustomerservices.()(本题2.5分)A.toB.withC.onD.in答案:B解析:无7.(单选题)Urgentcommunicationswhichcouldnotbeestablishedbecauseofnoreplyoneendofthelinkcouldhavedramaticconsequences.()(本题2.5分)A.inB.atC.toD.with答案:B解析:无8.(单选题)Add-dropMultiplexerisaparticulartypeofterminalmultiplexerinathroughmodefashion.()(本题2.5分)A.designingoperateB.designoperatingC.designedoperateD.designedtooperate答案:D解析:无9.(单选题)Typically,themodulatoranddemodulatorsectionsoftheconverterarecombinedintoatwowaydatatransmitter-receiver,commonlycalledadatamodemordataset.()(本题2.5分)A.oneB.aC.bothD.two答案:C解析:无10.(单选题)Forexample,thesignalfromasatellite,locatedinfarouterspace,isveryweak.()(本题2.5分)A.receivedB.receiveC.receivingD.toreceive答案:A解析:无11.(单选题)ATMtransfersinformationinshortpacketcalled(本题2.5分)A.cellB.channelC.flowD.form答案:A解析:无12.(单选题)ElectronicPrivateAutomaticBranchExchangesystems,ontelephonetechnology,isthelocalareanetworktechnologyusingastartopologywheretheswitchconstitutesthecentralnode.()(本题2.5分)A.baseB.tobaseC.basingD.based答案:D解析:无13.(单选题)TheInternetisahugesystems,butitusesjustahandfulofmethodtomovedataaround.()(本题2.5分)A.interconnectedB.interconnectC.tointerconnectD.interconnecting答案:A解析:无14.(单选题)Inthetelephonesystem,theuseoffibreopticsforinterconnectingcentralofficeswithinametropolitanareaandforlowerlevelsintheswitchinghierarchyisstillrapidly.()(本题2.5分)A.increaseB.increasingC.toincreaseD.increased答案:B解析:无15.(单选题)Afterofthelastbyteintheframe,thewholesequencerepeatsstartingwiththe6framingbytesofthefollowingframe.()(本题2.5分)A.transmitB.transmittedC.transmissionD.totransmit答案:C解析:无16.(单选题)Whenthewavelengthbecomeslonger,theRayleighlimitoflossesbecomes.()(本题2.5分)A.biggerB.littleC.greaterD.smaller答案:D解析:无17.(单选题)Theshapeofcellinacellularsystemisalwaysdescribedasa.()(本题2.5分)A.octagonB.hexagonC.triangleD.quadrate答案:B解析:无18.(单选题)Theword“multimedia”isbeingusedtodescribeamixtureofhardware,softwareandapplications,withaconsequentconfusioninpeople’smindsasto.()(本题2.5分)A.whatisitB.whichisitC.whatitisD.whichitis答案:C解析:无19.(单选题)TheSDHsignaliscapableofallthecommontributarysignalsfoundintoday’stelecommunicationnetworks.()(本题2.5分)A.transportB.totransportC.transportedD.transporting答案:D解析:无20.(单选题)____isusedtocommunicatewithanothercomputerovertelephonelines.()(本题2.5分)A.keyboardB.modemC.mouseD.printer答案:B解析:无21.(单选题)Byadding_________toyourprograms,youcanmakecomputersmoreinterestingandmuchmorefunfortheuser.()(本题2.5分)A.multimediaB.textC.musicD.picture答案:A解析:无22.(单选题)Followingsaresomeimagedatafileformats,whichiswrong?_______()(本题2.5分)A.*.TIFB.*.DOCC.*.BMPD.*.GIF答案:B解析:无23.(单选题)Acharacteristicofoperatingsystemis_________().(本题2.5分)A.resourcemanagementB.memorymanagementC.errorrecoveryD.alltheabove答案:A解析:无24.(单选题)AnISPsuppliesa_________thatyoucandialfromyourcomputertologontheinternetserver.()(本题2.5分)A.publickeyB.privatekeyC.servicenumberD.helpfile答案:C解析:无25.(单选题)PleasefindtheitemthatisnotbelongtotheDBA_________.()(本题2.5分)A.storagestructureandaccessmethoddefinitionB.schemadefinitionC.integrityconstrainspecificationD.DDL答案:D解析:无26.(单选题)_________isdesignedtomanagelargebodiesofinformation.()(本题2.5分)A.afilesystemB.atransactionC.adatabasesystemD.adatabaselanguage答案:C解析:无27.(单选题)Today,_________cangiveyouamusicsynthesizer,afaxmachine,aCD-ROMdrive,ect.()(本题2.5分)A.inputdevicesB.expansioncardsC.outputdeviceD.joystick答案:D解析:无28.(单选题)____isawordprocessingtoolthathelpsyoutocreatequalitydocuments.()(本题2.5分)A.Word2000B.Outlook2000C.Access2000D.Excel2000答案:A解析:无29.(单选题)Atthereceivingterminaltheinterfaceassemblyacceptsthereceiveddata,storesit,thenfeedsittothedataprocessortheappropriaterate