第1題Anoperatingsystemthatallowsmultipleuserstosubmitseveraljobstoacomputersystemforcentralizedprocessingiscalled().ANetworkoperatingsystemBTime-sharingoperatingsystemCReal-timeoperatingsystemDBatchprocessingsystem第2題()Meansthattwoormoreactivitiesoreventsoccurwithinthesametimeinterval.AparallelBConcurrencyCsharedDSynchronize第3題Theoperatingsystem()isdesignedwithalayeredstructure.AUNIXBIBMOS/360CMulticsDMS-DOS第4題Thereareseveraloperationmodesofbatchprocessingsystem().AExecutionsystemBOnlinebatchCEarlybatchprocessingDOfflinebatchprocessing正確答案：ABCD第5題Thetime-sharingoperatingsystemhasthecharacteristicsof().ATimelinessBMultipathCInteractivityDExclusivity正確答案：ABCD第6題Multiprogrammingtechnologymustbeimplementedonmultipleprocessors.第7題Thevirtualmachinecansimulateahardwaresystemfunctionthroughsoftware,andcanvirtualizeacomputerintomultiplecomputers.第8題Computerresourceswithmutuallyexclusiveaccesscannotbeshared.第9題Real-timeoperatingsystemsdonotneedtohavestronginteractioncapabilities.第10題Minix3wasdevelopedbyProfessorDijkstra,DepartmentofComputerScience,VrijeUniversity,Netherlands.第1題Thecoreproblemofprocessormanagementis().AProcessorschedulingBProcessmanagementCJobmanagementDThreadmanagement第2題()Istheonlysignthattheoperatingsystemperceivestheexistenceofaprocess.AJCBBTCBCFCBDPCB第3題Whentheprocesstimesliceintheexecutionstatearrives,ittransitionsto()state.ABlockBReadyCcarryoutDindefinite第4題Theprocessimageincludesseveralelementssuchas().AProcesscorestackBPCBCProcessblockDProcessdatasegment正確答案：ABCD第5題Commondeprivationprinciplesinprocessorschedulingstrategiesare().ATimesliceprincipleBFCFSprinciplesCPriorityprincipleDPrincipleofshortestpriority正確答案：ACD第6題Theprocesshasalifecycle,dynamicgeneration,dynamicexecution,anddynamicdemise.第7題Thereadystatemeansthataprocessalreadyhasallexecutionconditionsexcepttheprocessor.第8題Processcontextswitchingcanoccurinbothkernelmodeandusermode.第9題Oneadvantageofkernel-levelthreadsisthatsystemoverheadisrelativelysmall.第10題Onedisadvantageofthemulti-levelfeedbackround-robinschedulingalgorithmisthatitcancausestarvation.Chapter3-Exercise第1題Comparingtheexecutionofsequentialprogramsandconcurrentprograms().AbasicallythesameBTheformerisgenerallyfasterinexecutiontimeCcompletelydifferentDThelatterhasafastoverallexecutiontime第2題IftheinitialvalueofthesemaphoreSemis2,andthecurrentvalueis-1,itmeansthatthereis()waitingprocess.AzeroBoneCtwoDthree第3題Ifyoudonotperform()operationontheprogramsegmentthataccessescriticalresources,theexecutionresultoftheprogramwillinevitablyloseitsclosureandreproducibility.AparallelBSynchronizeCasynchronousDMutuallyexclusive第4題Thebasiccharacteristicsoftheprocessinclude().ADynamicBSequentialCConcurrencyDAsynchrony正確答案：ACD第5題Thefollowingisamethodtoeliminatedeadlock().ApreventionBavoidCDetectionandrecoveryDIgnore正確答案：ABCD第6題Ifthesystemisinanunsafestate,itisnotnecessarilyadeadlockstate.第7題Allprocessesparticipatinginthedeadlockoccupyresources.第8題Pipelinecommunicationisalow-levelcommunicationbetweenprocesses.第9題Directconstraintsbetweenprocessesleadtomutualexclusionbetweenprocesses.第10題IfthecurrentvalueofthesemaphoreSis-5,itmeansthereare5waitingprocessesinthesystem.Chapter4-Exercise第1題Instoragemanagement,thepurposeofusingoverlayandexchangetechnologyis().AExpandmainmemorycapacityBRealizemainmemorysharingCSavestoragespaceDIncreaseCPUutilization第2題Dynamicrelocationtechnologydependson().ATargetprogramBAddressagencyCRelocationloaderDRelocationregister第3題Thefoundationofthevirtualstoragemanagementsystemistheprogram's()theory.ALocalityBGlobalCDynamicDVirtuality第4題Thebasicfunctionsofstoragemanagementare().AStorageprotectionandsharingBAddresstranslationCStorageprotectionandsharingDMemoryallocationandrecycling正確答案：ABCD第5題Thereplacementalgorithminrequestpagemanagementincludes()algorithm.AFirstinfirstoutBLeastrecentlyusedCNotoftenusedrecentlyDRandomreplacement正確答案：ABCD第6題Theworst-caseadaptationmethodfordynamicpartitionmanagementrequiresthatthefreeareasinthefreepartitiontablebearrangedinorderfromsmalltolarge.第7題Pagingstoragemanagementallowsaprocesstobeallocatedtonon-adjacentstoragespaces.第8題Whetheritispartitionmanagementorpagingmanagementwillgeneratealotofinternalfragmentation.第9題Insegmentmanagement,thereisnopossibilityofsystemjitter.第10題Segmentpagestoragemanagementneedstoaccessmemoryatleastthreetimesforeachdatafetch.Chapter5-Exercise第1題Themainpurposeofthefilesystemis().AImplementvirtualstorageBAccessbynameCImproveaccessspeedDUsedtostoresystemfiles第2題Thefilesystemrefersto().AFilecollectionBFiledescriptionCFileDirectoryDSoftwareanddatastructureformanagingfiles第3題Inthefilesystem,usersdirectlyuseexternalstoragein()way.ALogicaladdressBPhysicaladdressCNamespaceDVirtualaddress第4題Thefunctionsthatthefilesystemshouldhaveinclude().AAccessbynameBAllocatestoragespaceCImplementcatalogmanagementDProvideaccessmethods正確答案：ABCD第5題Therearealsodifferencesinhowfilesareorganizedonthecorrespondingstoragemedia.Usuallythefilestoragestructureis().AFlowstructureBSequentialstructureCLinkstructureDIndexstructure正確答案：BCD第6題Inthefilesecurityimplementationmethod,settingapasswordforthefileisamorecommonmethod.第7題Computerorganization,accessandstorageofinformationisachievedthroughthefilesystem.第8題Transparentaccesstofilesallowsuserstoseethelogicalstructureofthefile,butalsoknowitsphysicalstructureandsearchmethod.第9題Theconcatenatedfilestructureisnotonlysuitableforsequentialaccess,butalsosuitableforrandomaccess.第10題BoththeUNIXoperatingsystemandMS-DOSuseunstructuredfiles.Chapter6-Exercise第1題Intheoperatingsystem,usersusuallyuse()whenusingI/Odevices.APhysicaldevicenameBLogicaldevicenameCVirtualdevicenameDDeviceblocknumber第2題Accordingto()classification,thedevicecanbedividedintoblockdeviceandcharacterdevice.AbelongBOperatingcharacteristicsCSharedattributesDInformationExchangeUnit第3題()Algorithmisacommonlyusedalgorithmfordeviceallocation.AShortjobpriorityBBestfitCFirstcomefirstserveDFirstadaptation第4題Accordingtotheunitofinformationexchange,I/Odevicescanbedividedinto().ABlockdeviceBCharacterdeviceCHigh-speedequipmentDLowspeedequipment正確答案：AB第5題Acc