计算机专业英语 大连理工大学 第三学期专科期末复习资料答案Word文件下载.docx
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1、（）standsforCentralProcessingUnit.Itperformsthesystem'
scalculatingandprocessing.
A．computer
B．CPU
C．inputdevice
D．outputdevice
2、A（）isanelectronicdevicethatoperatesunderthecontrolofinstructionsstoredinitsownmemory,whichcanaccordingtospecifiedrules,produceresults,andstoretheresultsforfutureuse.
A．computer
B．CPU
C．inputdevice
D．outputdevice
3、Thefirstgenerationofcomputeris（）.
A．vacuumtubes
B．transistors
C．integratedcircuits
D．microprocessors
4、（）referstothephysicalequipmentthatcanperformthebasicfunctionscontainedwithinthedataprocessingcycle.
A．Software
B．Hardware
C．Memory
D．CPU
5、（）aretheperipheralsthatallowuserstoenterdata,programs,commands,anduserresponsesintoacomputerandtransformthemintoasuitableformforprocessing.
A．RAM
B．ROM
C．Inputdevices
D．Memory
6、A（）istheprimaryinputdevice.Itisusedforenteringletters,numbersandcommandsintothesystem.
B．keyboard
C．outputdevices
D．memory
7、A（）isacablewhichiscapableofcarryingsignalsrepresentingdatafromoneplacetoanother.
A．bus
B．USB
C．port
D．keyboard
8、Thefourthgenerationofcomputeris（）.
9、（）standsforRandomAccessMemory.ItisthemainlocationforholdingprogramsanddatathattheCPUispresentlyprocessing.
B．ROM
C．inputdevices
10、（）standsforReadOnlyMemory,itisthecomputermemoryonwhichdatahasbeenprerecorded.
C．CPU
11、（）performsarithmetic,comparison,andlogicoperations.ItisonepartoftheCPU.
D．ALU
12、（）havemorestoragecapacitythandiskettesandalsoofferfasteraccesstothedatatheyhold.
A．Harddisks
B．Opticaldisks
C．Zipdisk
D．CD
13、（）areoutputdevicesthatprintcharacters,symbols,andgraphicsonaphysicalmediumsuchaspaperandatransparencyfile.
A．Flatpanelmonitors
B．Printers
C．Keyboards
D．Pointingdevice
14、Thefirstcomputersused（）forcircuitryandmagneticdrumsformemory,andwereoftenenormous,takingupentirerooms.
15、（）istheelectronicdevicethatinterpretsandcarriesoutthebasicinstructionsthatoperatethecomputer.
A．Processor
B．hardware
C．memory
16、（）isoneofthecomponentsoftheCPU,tellstherestofthecomputersystemhowtocarryoutaprogram'
sinstructions.
A．Controlunit
B．ALU
C．RAM
D．ROM
17、ThetwocomponentsoftheCPUareconnectedbyakindofelectronicroadwaycalleda（an）（）.
A．USB
B．bus
18、The（）isthecommunicationsmediumfortheentirecomputersystem.
A．systemboard
B．input
C．output
D．bus
19、（）canbeintheformofprograms,commandsanduserresponses.
A．Processor
B．Instructions
C．Mouse
D．Port
20、Theprocessoftranslatinginstructionsintocommandsiscalled（）.
A．decoding
B．register
C．digital
D．port
21、（）alsocalledaprogram,istheseriesofcomputerlanguagecodedinstructionsthattellsthecomputerhowtoperformtasks.
C．Compiler
D．Interpreter
22、Twotypesofsoftwareare（）andapplicationsoftware.
A．systemsoftware
B．systemcall
C．systemcrash
D．systemhardware
23、The（）isautomaticallyloadedintoRAMsoonafteryouturnon,or"
boot"
thecomputer.
A．applicationsoftware
B．operatingsoftware
C．shell
D．compiler
24、A（）issoftwarethatlooksatanentirehigh-levelprogrambeforetranslatingitintomachinelanguage.
A．compiler
B．interpreter
C．instruction
D．process
25、TheCPUexecutesprogramscodedinalowerlevellanguagecalledthe（）.
A．utilityprogram
B．languagetranslator
C．machinelanguage
D．backup
26、（）programsareusedtorecoverdeletedordamaged（corrupted）files.
A．Datarecovery
B．Systemcall
C．Systemcrash
D．Systemsoftware
27、Linuxisanoperatingsystemsimilarto（）thatisbecomingmoreandmorepopular.
A．Windows98
B．Windows2000
C．WindowsXP
D．Unix
28、（）isthenumberoftimesawaverepeatsduringaspecifictimeinterval,thatishowmanytimesitcompletesacycleinonesecond.
A．Amplitude
B．Frequency
C．Analogsignals
D．Digitalsignals
29、（）isindicatedbytheheightofawavewithinagivenperiodoftime.
30、In（）mode,thecommunicationisunidirectional,likeaone-waystreet.Onlyoneofthetwostationsonalinkcantransmit;
theothercanonlyreceive.
A．half-duplex
B．full-duplex
C．simplex
D．noneoftheabove
31、A（）channelallowssimultaneousmessageexchangeinbothdirections.Itreallyconsistsoftwosimplexchannels,aforwardchannelandareversechannel,linkingthesamepoints.
32、A（）isahighlyintelligentdevicethatsupportsconnectivitybetweenbothlikeandunlikeLANs,andbetweenLANsandWANsorMANs.
A．router
B．repeater
C．switch
D．bridge
33、（）isadevicethatfunctionsasbotharouterandabridge.
A．Repeater
B．Switch
C．Gateway
D．Brouter
34、（）isanacronymforlocalareanetwork.Itisagroupofcomputersandotherdevicesdispersedoverarelativelylimitedareaandconnectedbyacommunicationslink.
A．LAN
B．WAN
C．MAN
D．Noneoftheabove
35、Ina（）network,allmicrocomputersandothercommunicationsdevicesareconnectedtoacentralhub,suchasafileserverorhostcomputer,usuallyviaUTP.
B．star
C．tree
D．ring
36、Ina（）network,allmicrocomputersandothercommunicationdevicesareconnectedtoacontinuousloop.
37、（）,theprotocolfortransferringHTMLfilesontheWeb.
A．HTML
B．ISP
C．Client
D．Server
38、（）,differencebetweenthelowestandhighestfrequenciestransmittedinaparticularchannelorsystem.
B．Bandwidth
C．Bridge
D．Network
39、（）,softwareusedincorporatenetworks（intranetsandextranets）topreventunauthorizedpeoplefromaccessingthenetwork.
A．Firewall
B．Modem
C．Hypertext
D．TCP
40、（）,shortformodulator/demodulator,devicethatconvertsdigitalsignalsintoarepresentationofanalogform（modulation）tosendoverphonelines;
areceivingmodemthenconvertstheanalogsignalbacktoadigitalsignal（demodulation）.
A．Server
B．Network
C．Modem
D．Gateway
41、The（）isaworldwidesystemofcomputernetworksinwhichanyonecomputercangetinformationfrom/ortalktoanyotherconnectedcomputerusingtheTCP/IPprotocols.
A．Internet
B．WWW
C．ARPANET
D．ISP
42、（）isthemessages,usuallytext,sendfromonepersontoanotherviatheInternet.
A．TCP/IP
B．Telnet
C．FTP
D．E-mail
43、（）standsfor"
WorldWideWeb"
;
itisthelargeglobalcollectionofInternetserverswhichsupporthypertextdocumentscodedinHTML,andtransferredviaHTTP.
44、（）isawayoftransferringfilesovertheInternetfromonecomputertoanother.
B．FTP
C．E-mail
45、The（）wastheprecursortotheInternet.Developedinthelate1960'
sandearly1970'
sbytheU.S.DepartmentofDefenceasanexperimentinwide-area-networkingthatwouldsurviveanuclearwar.
A．ARPANET
B．Apple
C．Microsoft
46、（）isaprotocolthatletsauserlogintoaremotecomputeranduseprogramsanddatathattheremoteownerhasmadeavailable,justasifitweretheirowncomputer.
A．FTP
C．Telnet
D．NSFNET
47、（）,conversionofeitherencodedorencipheredtextintoplaintext.
A．Decrypt
B．Encryption
C．Authenticate
D．Hacker
48、（）,theprocessofchangingplaintextdataintoencipheredtextthroughanalgorithm.
49、（）,referringtoapersonwhobreaksintocomputersystemsforthechallengeorstealcomputerresourcesorcorruptacomputer'
sdata.
A．Hacker
B．Password
C．DES
D．Authenticate
50、（）,asecretcodeassignedtoauserwhichisknownbythecomputersystem.KnowledgeofthepasswordassociatedwiththeuserIDisconsideredproofofauthorization.
51、（）,executablecodethat,whenrunbysomeone,infectsotherexecutablecodeinacomputer.
A．ComputerSecurity
B．Digitalsignatures
C．Computervirus
52、（）,technologicalandmanagerialproceduresappliedtocomputersystemstoensuretheavailability,integrityandconfidentialityofinformationmanagedbythecomputersystem.
53、（）,whichstandsforMotionPictureExpertsGroup（MPEG）Layer3,israpidlybecomingthestandardformusictransmissionviaInternet.
A．MP3
B．MP4
C．JPEG
D．AVI
54、（）isacomputertechnologythatcreatesthreedimensionalrealillusioninanartificialworld.
A．Vectorimage
B．Bitmap
D．VirtualReality
55、（）（MotionPictureExpertsGroup）standardsarethemainalgorithmsusedtocompressvideos.Duetothefactthatmoviescontainbothimagesandsound,itcancompressbothaudioandvideo.
A．JPEG
B．MPEG
C．MIDI
56、（）（JointPhotographicExpertsGroup）,standardforcompressingcontinuous-tonestillpictures.
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