六級加考完整試卷及答案

一、填空題（每題2分，共20分）1.Theprocessofconvertinganalogsignalsintodigitalformisknownas_______.2.Inabinarysystem,thenumber1011representsthedecimalvalue_______.3.Thetimetakenforonecompletecycleofawaveformiscalledthe_______.4.Adevicethatcanstoreandretrievedataquicklyisknownasa_______.5.Theprocessofbreakingdownalargeproblemintosmaller,manageablepartsiscalled_______.6.Thesetofrulesthatgovernhowdataistransmittedoveranetworkisknownasthe_______.7.Aprogramthatisdesignedtocauseharmtoacomputersystemiscalleda_______.8.Theprocessofoptimizingtheperformanceofacomputersystemisknownas_______.9.Theprotocolusedfortransferringfilesbetweencomputersonanetworkiscalled_______.10.Theprocessofverifyingtheauthenticityofadigitalsignatureisknownas_______.二、判斷題（每題2分，共20分）1.TrueorFalse:Thebinarynumber1101isequaltothedecimalnumber13.2.TrueorFalse:Analogsignalsarecontinuousandcantakeanyvaluewithinarange.3.TrueorFalse:Afirewallisahardwaredevicethatprotectsanetworkfromunauthorizedaccess.4.TrueorFalse:Theprocessofdebugginginvolvesidentifyingandfixingerrorsinaprogram.5.TrueorFalse:TheInternetProtocol(IP)isresponsibleforroutingdatapacketsacrosstheinternet.6.TrueorFalse:Avirusisatypeofmalwarethatcanreplicateitselfandspreadtoothercomputers.7.TrueorFalse:TheCentralProcessingUnit(CPU)isresponsibleforexecutinginstructionsandperformingcalculations.8.TrueorFalse:Theprocessofencryptingdatamakesitmoredifficultforunauthorizedindividualstoaccess.9.TrueorFalse:Adatabaseisacollectionoforganizeddatathatcanbeeasilyaccessedandmanipulated.10.TrueorFalse:TheWorldWideWeb(WWW)isacollectionofdocumentsandresourcesthatareaccessibleovertheinternet.三、選擇題（每題2分，共20分）1.Whichofthefollowingisacharacteristicofanalogsignals?a)Discreteandcanonlytakespecificvalues.b)Continuousandcantakeanyvaluewithinarange.c)Randomandunpredictable.d)Non-linearandnon-repeating.2.Whatistheprimarypurposeofafirewall?a)Toincreasethespeedofanetwork.b)Toprotectanetworkfromunauthorizedaccess.c)Tooptimizethestoragecapacityofacomputer.d)Toencryptdataforsecuretransmission.3.Whichofthefollowingisatypeofmalware?a)Trojanhorse.b)Firewall.c)Router.d)Protocol.4.Whatistheprocessofoptimizingtheperformanceofacomputersystemcalled?a)Debugging.b)Encryption.c)Optimization.d)Decryption.5.Whichprotocolisusedfortransferringfilesbetweencomputersonanetwork?a)HTTP.b)FTP.c)SMTP.d)DNS.6.Whatistheprocessofconvertinganalogsignalsintodigitalformknownas?a)Digitization.b)Analogization.c)Decoding.d)Encoding.7.Whichcomponentofacomputersystemisresponsibleforexecutinginstructionsandperformingcalculations?a)RandomAccessMemory(RAM).b)CentralProcessingUnit(CPU).c)GraphicsProcessingUnit(GPU).d)HardDiskDrive(HDD).8.Whatisthesetofrulesthatgovernhowdataistransmittedoveranetworkcalled?a)Protocol.b)Algorithm.c)Software.d)Hardware.9.Theprocessofverifyingtheauthenticityofadigitalsignatureisknownas:a)Digitalsignatureverification.b)Encryption.c)Decryption.d)Hashing.10.Whichofthefollowingisacharacteristicofdigitalsignals?a)Continuousandcantakeanyvaluewithinarange.b)Discreteandcanonlytakespecificvalues.c)Randomandunpredictable.d)Non-linearandnon-repeating.四、簡答題（每題5分，共20分）1.Explainthedifferencebetweenanaloganddigitalsignalsintermsoftheircharacteristicsandapplications.2.Describetheroleofafirewallinprotectinganetworkfromunauthorizedaccess.3.Discussthesignificanceofdataencryptioninensuringthesecurityofsensitiveinformation.4.Explaintheconceptofdebugginganditsimportanceinsoftwaredevelopment.五、討論題（每題5分，共20分）1.Discusstheadvantagesanddisadvantagesofusinganalogsignalsinmoderncommunicationsystems.2.Analyzetheimpactofmalwareoncomputersystemsandthemeasuresthatcanbetakentomitigateitseffects.3.Exploretheimportanceofnetworkprotocolsinfacilitatingseamlesscommunicationbetweendevicesonanetwork.4.Discusstheroleofoptimizationtechniquesinimprovingtheperformanceofcomputersystemsandtheirpracticalapplications.答案和解析：一、填空題1.Analog-to-digitalconversion2.113.Period4.RandomAccessMemory(RAM)5.Decomposition6.Protocol7.Virus8.Optimization9.FileTransferProtocol(FTP)10.Digitalsignatureverification二、判斷題1.True2.True3.False4.True5.True6.True7.True8.True9.True10.True三、選擇題1.b)Continuousandcantakeanyvaluewithinarange.2.b)Toprotectanetworkfromunauthorizedaccess.3.a)Trojanhorse.4.c)Optimization.5.b)FTP.6.a)Digitization.7.b)CentralProcessingUnit(CPU).8.a)Protocol.9.a)Digitalsignatureverification.10.b)Discreteandcanonlytakespecificvalues.四、簡答題1.Analogsignalsarecontinuousandcantakeanyvaluewithinarange,whiledigitalsignalsarediscreteandcanonlytakespecificvalues.Analogsignalsarecommonlyusedinapplicationssuchasaudioandvideotransmission,whiledigitalsignalsareusedinapplicationssuchascomputerdatastorageandcommunication.2.Afirewallactsasabarrierbetweenatrustedinternalnetworkandanuntrustedexternalnetwork,suchastheinternet.Itmonitorsandcontrolsincomingandoutgoingnetworktrafficbasedonpredeterminedsecurityrules,preventingunauthorizedaccessandprotectingthenetworkfrompotentialthreats.3.Dataencryptionistheprocessofconvertingsensitiveinformationintoasecureformatthatcanonlybeaccessedbyauthorizedindividuals.Itensurestheconfidentialityandintegrityofdata,preventingunauthorizedaccessandtampering.Encryptioniscrucialinprotectingsensitiveinformationsuchaspersonaldata,financialtransactions,andclassifieddocuments.4.Debuggingistheprocessofidentifyingandfixingerrorsorbugsinaprogram.Itinvolvesanalyzingthecode,identifyingtherootcauseoftheerror,andimplementingasolutiontorectifyit.Debuggingisessentialinsoftwaredevelopmentasithelpsimprovethequalityandreliabilityofsoftwarebyeliminatingerrorsandensuringthattheprogramfunctionsasintended.五、討論題1.Analogsignalshavetheadvantageofbeingabletorepresentacontinuousrangeofvalues,whichisusefulinapplicationssuchasaudioandvideotransmission.However,theyaresusceptibletonoiseanddegradationoverlongdistances,makingthemlessreliableformoderncommunicationsystems.Digitalsignals,ontheotherhand,arediscreteandcanbeeasilytransmittedandprocessedwithoutdegradation,makingthemmoresuitableformoderncommunicationsystems.2.Malwarecanhaveasignificantimpactoncomputersystems,causingdataloss,systemcrashes,andunauthorizedaccesstosensitiveinformation.Tomitigateitseffects,measuressuchasinstallingantivirussoftware,regularlyupdatingsoftwareandoperatingsystems,usingstrongpasswords,andbeingcautiousofsuspiciousemailsanddownloadscanbetaken.Additionally,networksecuritymeasureslikefirewallsandintrusiondetectionsystemscanhelpprotectagainstmalwareattacks.3.Networkprotocolsareessentialinfacilitatingseamlesscommunicationbetweendevicesonanetwork.Theydefinetherulesandstandardsfordatat