操作系统一精髓与设计原理第五版选择题与答案英文版第一到第十一章

操作系统一精髓与设计原理第五版选择题与答案英文版第一到第十一章第一章Thegeneralroleofanoperatingsystemisto:da.Noneoftheaboveb.Managefilesforapplicationprogramsc.Actasaninterfacebetweenvariouscomputersd.ProvideasetofservicestosystemusersInformationthatmustbesavedpriortotheprocessortransferringcontroltotheinterrupthandlerroutineincludes:ba.Noneoftheaboveb.ProcessorStatusWord(PSW)&Locationofnextinstructionc.ProcessorStatusWord(PSW)d.ProcessorStatusWord(PSW)&ContentsofprocessorregistersOneacceptedmethodofdealingwithmultipleinterruptsisto:选择一个答案aa.Defineprioritiesfortheinterruptsb.Noneoftheabovec.Disableallinterruptsexceptthoseofhighestpriorityd.Servicetheminround-robinfashionInauniprocessorsystem,multiprogrammingincreasesprocessorefficiencyby:选择一个答案da.Increasingprocessorspeedb.Eliminatingallidleprocessorcyclesc.Alloftheaboved.TakingadvantageoftimewastedbylongwaitinterrupthandlingAsoneproceedsdownthememoryhierarchy(i.e.,frominboardmemorytoofflinestorage),thefollowingcondition(s)apply:c选择一个答案a.Decreasingcapacityb.Increasingcostperbitc.Increasingaccesstimed.AlloftheaboveSmall,fastmemorylocatedbetweentheprocessorandmainmemoryiscalled选择一个答案ba.Noneoftheaboveb.Cachememoryc.WORMmemoryd.CD-RWmemoryWhenanewblockofdataiswrittenintocachememory,thefollowingdetermineswhichcachelocationtheblockwilloccupy:选择一个答案aa.Noneoftheaboveb.Writepolicyc.Cachesized.BlocksizeThefourmainstructuralelementsofacomputersystemare:选择一个答案ba.Processor,Registers,I/OModules&MainMemoryb.Processor,MainMemory,I/OModules&SystemBusc.Noneoftheaboved.Processor,Registers,MainMemory&SystemBusThetwobasictypesofprocessorregistersare:选择一个答案aa.User-visibleandControl/Statusregistersb.User-visibleanduser-invisibleregistersc.Noneoftheaboved.ControlandStatusregistersAddressregistersmaycontain选择一个答案ca.Memoryaddressesofdatab.Memoryaddressesofinstructionsc.Alloftheaboved.PartialmemoryaddressesAControl/Statusregisterthatcontainstheaddressofthenextinstructiontobefetchediscalledthe:选择一个答案ca.Alloftheaboveb.ProgramStatusWord(PSW)c.ProgramCounter(PC)d.InstructionRegister(IR)Thetwobasicstepsusedbytheprocessorininstructionprocessingare:选择一个答案ca.InstructionandExecutecyclesb.FetchandInstructioncyclesc.FetchandExecutecyclesd.NoneoftheaboveAfetchedinstructionisnormallyloadedintothe:选择一个答案ca.ProgramCounter(PC)b.Noneoftheabovec.InstructionRegister(IR)d.Accumulator(AC)Acommonclassofinterruptsis选择一个答案da.Programb.I/Oc.Timerd.AlloftheaboveWhenanexternaldevicebecomesreadytobeservicedbytheprocessor,thedevicesendsthistypeofsignaltotheprocessor:选择一个答案ba.Noneoftheaboveb.Interruptsignalc.Haltsignald.Handlersignal第二章Aprimaryobjectiveofanoperatingsystemis:选择一个答案aa.Alloftheaboveb.Conveniencec.Abilitytoevolved.EfficiencyThepagingsysteminamemorymanagementsystemprovidesfordynamicmappingbetweenavirtualaddressusedinaprogramand:选择一个答案aa.Arealaddressinmainmemoryb.Noneoftheabovec.Avirtualaddressinmainmemoryd.ArealaddressinaprogramRelativetoinformationprotectionandsecurityincomputersystems,accesscontroltypicallyrefersto:选择一个答案da.Provingthatsecuritymechanismsperformaccordingtospecificationb.Noneoftheabovec.Theflowofdatawithinthesystemd.RegulatinguserandprocessaccesstovariousaspectsofthesystemAcommonproblemwithfull-featuredoperatingsystems,duetotheirsizeanddifficultyofthetaskstheyaddress,is:选择一个答案da.Latentbugsthatshowupinthefieldb.Chronicallylateindeliveryc.Sub-parperformanced.AlloftheaboveAtechniqueinwhichaprocess,executinganapplication,isdividedintothreadsthatcanrunconcurrentlyiscalled:选择一个答案da.Noneoftheaboveb.Symmetricmultiprocessing(SMP)c.Multiprocessingd.MultithreadingWIN2Ksupportsseveraltypesofuserapplications,including:选择一个答案ca.Noneoftheaboveb.Linuxc.WIN32d.System10KeytothesuccessofLinuxhasbeenit’scharacterasafreesoftwarepackageavailableundertheauspicesofthe:选择一个答案ca.Noneoftheaboveb.BerkeleySoftwareDistributionc.FreeSoftwareFoundationd.WorldWideWebConsortiumTheoperatingsystemprovidesmanytypesofservicestoend-users,programmersandsystemdesigners,including:选择一个答案ba.Built-inuserapplicationsb.Errordetectionandresponsec.Alloftheaboved.RelationaldatabasecapabilitieswiththeinternalfilesystemTheoperatingsystemisunusualinit’sroleasacontrolmechanism,inthat:选择一个答案ca.Noneoftheaboveb.Itrunsonaspecialprocessor,completelyseparatedfromtherestofthesystemc.Itfrequentlyrelinquishescontrolofthesystemprocessorandmustdependontheprocessortoregaincontrolofthesystemd.ItneverrelinquishescontrolofthesystemprocessorOperatingsystemsmustevolveovertimebecause选择一个答案aa.Newhardwareisdesignedandimplementedinthecomputersystemb.Hardwaremustbereplacedwhenitfailsc.Alloftheaboved.UserswillonlypurchasesoftwarethathasacurrentcopyrightdateAmajorproblemwithearlyserialprocessingsystemswas:选择一个答案aa.Setuptimeb.Inabilitytogethardcopyoutputc.Alloftheaboved.LackofinputdevicesAnexampleofahardwarefeaturethatisdesirableinabatch-processingsystemis选择一个答案aa.Privilegedinstructionsb.Noneoftheabovec.Acompletelyaccessiblememoryaread.LargeclockcyclesAcomputerhardwarefeaturethatisvitaltotheeffectiveoperationofamultiprogrammingoperatingsystemis:选择一个答案ba.Alloftheaboveb.I/OinterruptsandDMAc.Verylargememoryd.MultipleprocessorsTheprincipleobjectiveofatimesharing,multiprogrammingsystemisto选择一个答案ca.Maximizeprocessoruseb.Maximizeresponsetimec.Noneoftheaboved.ProvideexclusiveaccesstohardwareWhichofthefollowingmajorlineofcomputersystemdevelopmentcreatedproblemsintimingandsynchronizationthatcontributedtothedevelopmentoftheconceptoftheprocess?选择一个答案ca.Multiprogrammingbatchoperationsystemsb.Realtimetransactionsystemsc.Alloftheaboved.Timesharingsystems第三章Thebehaviorofaprocessorcanbecharacterizedbyexamining:选择一个答案ba.Multipleprocesstracesb.Theinterleavingoftheprocesstracesc.Alloftheaboved.AsingleprocesstraceTheProcessImageelementthatcontainsthemodifiablepartoftheuserspaceiscalledthe:a进程镜像=PCB+程序+STACK+可修改的DATAa.Noneoftheaboveb.ProcessControlBlockc.SystemStackd.UserProgram分数:7/7Theprocessorexecutionmodethatuserprogramstypicallyexecuteinisreferredtoas:a选择一个答案a.Usermodeb.Noneoftheabovec.Kernelmoded.SystemmodeOnestepintheprocedureforcreatinganewprocessinvolves:步骤:b选择一个答案a.Allocatingspacefortheprocessb.Alloftheabovec.Initializingtheprocesscontrolblockd.AssigningauniqueidentifierAprocessswitchmayoccurwhenthesystemencountersaninterruptcondition,suchasthatgeneratedbya:进程切换:TRAP(异常)+系统调用+INTERRUPT选择一个答案ca.Trapb.Supervisorcallc.Alloftheaboved.Memoryfault##操作系统仅仅是一组程序，并被处理器执行，是进程吗,如何控制它,。。。3种方法:无进程的内核在用户进程中执行(有一组进程切换函数)常用的PC就是这样的基于进程的操作系统IntheProcessBasedO/S:基于进程的操作系统Majorkernelfunctionsareorganizedasseparatefunctions选择一个答案ca.TheUserProcessImageincludesakernelstackb.O/Scodeanddataarecontainedinthesharedaddressspacec.Majorkernelfunctionsareorganizedasseparatefunctionsd.NoneoftheaboveUNIX进程描述:用户级上下文进程正文，进程数据系统级上下文内核栈寄存器上下文程序计数器，处理器状态寄存器InatypicalUNIXsystem,theelementoftheprocessimagethatcontainstheprocessorstatusinformationisthe:选择一个答案da.Alloftheaboveb.System-levelcontextc.User-levelcontextd.Registercontext分数:7/7Thebehaviorofanindividualprocesscanbecharacterizedbyexamining:选择一个答案aa.Asingleprocesstraceb.Multipleprocesstracesc.Theinterleavingoftheprocesstracesd.AlloftheaboveThebasicTwo-StateProcessModeldefinestwopossiblestatesforaprocessinrelationshiptotheprocessor:a选择一个答案a.RunningandNotRunningb.Noneoftheabovec.ExecutingandWaitingd.RunningandExecuting分数:7/7Thereareanumberofconditionsthatcanleadtoprocesstermination,including:c选择一个答案a.Boundsviolationb.Parentterminationc.Alloftheaboved.NormalcompletionIntheFive-StateProcessModel,thefollowingrepresentsavalidstatetransition:选择一个答案ca.Alloftheaboveb.New->Runningc.Running->Blockedd.New->BlockedInaProcessModelthatimplementstwosuspendstates,avalidstatetransitionisrepresentedby:选择一个答案ba.Running->Ready/Suspendb.Alloftheabovec.Ready->Ready/Suspendd.Ready/Suspend->ReadyTheschedulingstrategywhereeachprocessinthequeueisgivenacertainamountoftime,inturn,toexecuteandthenreturnedtothequeue,unlessblockedisreferredtoas:选择一个答案aa.Round-Robinb.Alloftheabovec.Prioritizationd.LIFO分数:6/6AMemoryTableisanO/ScontrolstructurethatisusedbytheO/Sto:选择一个答案ba.ManageI/Odevicesb.Noneoftheabovec.Manageprocessesd.Provideinformationaboutsystemfiles分数:6/6进程描述:1.操作系统的控制结构:4个表:内存表，跟踪主存，辅存IO表文件表进程表2.进程控制结构:PCB,进程映像。。第四章Theconceptofaprocessinanoperatingsystemembodiestwoprimarycharacteristics,oneofwhichis:选择一个答案ba.Noneoftheaboveb.Resourceownershipc.Multithreadingd.SymmetricmultiprocessingEarlyoperatingsystemsthatweredesignedwithlittleconcernaboutstructurearetypicallyreferredtoas:b选择一个答案a.Kerneloperatingsystemsb.Monolithicoperatingsystemsc.Layeredoperatingsystemsd.Alloftheabove分数:6/6Abenefitofthemicrokernelorganizationis:选择一个答案ca.Flexibilityb.Portabilityc.Alloftheaboved.ExtensibilityInlow-levelmicrokernelmemorymanagement,anexampleofanoperationthatcansupportexternalpagingandvirtualmemorymanagementisthe:低级存储器管理:提供一组3个微内核操作，用于支持内核外的分页和虚存管理:授权，映射，刷新b选择一个答案a.Flushoperationb.Alloftheabovec.Grantoperationd.MapoperationInaW2Ksystem,thestatethatathreadenterswhenithasbeenunblockedandtheresourceforwhichithasbeenblockedisnotyetavailableiscalledthe:选择一个答案ca.Waitingstateb.Standbystatec.Transitionstated.Noneoftheabove分数:7/7InaSolarissystem,aUser-LevelThread(ULT)thatenterstheactivestateisassignedtoa:b选择一个答案a.Noneoftheaboveb.Light-WeightProcess(LWP)c.Heavy-WeightProcess(HWP)d.KernelthreadInaLinuxsystem,whenanewprocessiscloned,thetwoprocessessharethesame:选择一个答案aa.Virtualmemoryb.Processidentifierc.Alloftheaboved.task_structdatastructureAnexampleofasystemthatimplementsasingleprocesswithmultiplethreadsis:选择一个答案aa.Javab.WIN2000c.Solarisd.AlloftheaboveWhichofthefollowingistrueregardingtherelationshipbetweenprocessesandthreads:选择一个答案ba.Alloftheaboveb.Ittakesfarlesstimetocreateanewthreadinanexistingprocessthantocreateanewprocessc.Ittakeslesstimetoswitchbetweentwodifferentprocessesthantoswitchbetweentwothreadswithinthesameprocessd.IttakeslesstimetoterminateaprocessthanathreadThebasicthreadoperationrelatedtothechangeinthreadstatethatoccurswhenathreadneedstowaitforaneventisreferredtoasthe:d选择一个答案a.Unblockoperationb.Noneoftheabovec.Spawnoperationd.BlockoperationOneofthedisadvantagesofUser-LevelThreads(ULTs)comparedtoKernel-LevelThreads(KLTs)is:选择一个答案aa.WhenaULTexecutesasystemcall,allthreadsintheprocessareblockedb.Schedulingisapplicationspecificc.Threadswitchingdoesnotrequirekernelmodeprivilegesd.AlloftheaboveIntheLinuxO/S,multiplethreadsmaybecreatedandexecutedwithinasingleprocess.ThisisanexampleofthefollowingThread-to-Processrelationship:选择一个答案ca.M:Nb.1:Mc.Noneoftheaboved.1:1Thecomputersystemcategorywhereasingleprocessorexecutesasingleinstructionstreamtooperateondatastoredinasinglememoryiscalled:a选择一个答案a.SingleInstructionSingleData(SISD)streamb.MultipleInstructionSingleData(MISD)streamc.SingleInstructionMultipleData(SIMD)streamd.NoneoftheaboveInaSMPsystem,eachprocessormaintainsalocalcacheandmustalertallotherprocessorsthatachangetocacheupdatehastakenplace.Thisisreferredtoasthe:a选择一个答案a.Cachecoherencyproblemb.Synchronizationmechanismproblemc.Interconnectionmechanismproblemd.NoneoftheaboveKeyissuesinvolvedinthedesignofmultiprocessoroperatingsystemsinclude:b选择一个答案a.Schedulingb.Synchronizationc.Reliabilityandfaulttoleranced.Alloftheabove第五章Whichofthefollowingmajorlineofcomputersystemdevelopmentcreatedproblemsintimingandsynchronizationthatcontributedtothedevelopmentoftheconceptoftheprocess?b选择一个答案a.Timesharingsystemsb.Alloftheabovec.Realtimetransactionsystemsd.MultiprogrammingbatchoperationsystemsAprimaryobjectiveofanoperatingsystemis:c选择一个答案a.Abilitytoevolveb.Efficiencyc.Alloftheaboved.ConvenienceThepagingsysteminamemorymanagementsystemprovidesfordynamicmappingbetweenavirtualaddressusedinaprogramand:a选择一个答案a.Arealaddressinmainmemoryb.Avirtualaddressinmainmemoryc.Noneoftheaboved.ArealaddressinaprogramRelativetoinformationprotectionandsecurityincomputersystems,accesscontroltypicallyrefersto:选择一个答案aa.Regulatinguserandprocessaccesstovariousaspectsofthesystemb.Theflowofdatawithinthesystemc.Provingthatsecuritymechanismsperformaccordingtospecificationd.NoneoftheaboveAcommonproblemwithfull-featuredoperatingsystems,duetotheirsizeanddifficultyofthetaskstheyaddress,is:d选择一个答案a.Chronicallylateindeliveryb.Latentbugsthatshowupinthefieldc.Sub-parperformanced.AlloftheaboveAtechniqueinwhichaprocess,executinganapplication,isdividedintothreadsthatcanrunconcurrentlyiscalled:选择一个答案da.Symmetricmultiprocessing(SMP)b.Noneoftheabovec.Multiprocessingd.MultithreadingWIN2Ksupportsseveraltypesofuserapplications,including:选择一个答案da.Noneoftheaboveb.System10c.Linuxd.WIN32KeytothesuccessofLinuxhasbeenit’scharacterasafreesoftwarepackageavailableundertheauspicesofthe:选择一个答案da.Noneoftheaboveb.BerkeleySoftwareDistributionc.WorldWideWebConsortiumd.FreeSoftwareFoundationTheoperatingsystemprovidesmanytypesofservicestoend-users,programmersandsystemdesigners,including:选择一个答案ca.Relationaldatabasecapabilitieswiththeinternalfilesystemb.Alloftheabovec.Errordetectionandresponsed.Built-inuserapplicationsTheoperatingsystemisunusualinit’sroleasacontrolmechanism,inthat:b选择一个答案a.Itrunsonaspecialprocessor,completelyseparatedfromtherestofthesystemb.Itfrequentlyrelinquishescontrolofthesystemprocessorandmustdependontheprocessortoregaincontrolofthesystemc.Itneverrelinquishescontrolofthesystemprocessord.NoneoftheaboveOperatingsystemsmustevolveovertimebecause选择一个答案aa.Newhardwareisdesignedandimplementedinthecomputersystemb.Alloftheabovec.Hardwaremustbereplacedwhenitfailsd.Userswillonlypurchasesoftwarethathasacurrentcopyrightdate分数:6/6Amajorproblemwithearlyserialprocessingsystemswas:b选择一个答案a.Alloftheaboveb.Setuptimec.Inabilitytogethardcopyoutputd.LackofinputdevicesAnexampleofahardwarefeaturethatisdesirableinabatch-processingsystemis选择一个答案da.Acompletelyaccessiblememoryareab.Largeclockcyclesc.Noneoftheaboved.PrivilegedinstructionsAcomputerhardwarefeaturethatisvitaltotheeffectiveoperationofamultiprogrammingoperatingsystemis:b选择一个答案a.Alloftheaboveb.I/OinterruptsandDMAc.Multipleprocessorsd.VerylargememoryTheprincipleobjectiveofatimesharing,multiprogrammingsystemisto选择一个答案ba.Maximizeresponsetimeb.Noneoftheabovec.Maximizeprocessorused.Provideexclusiveaccesstohardware第六章分数:7/7Thepermanentblockingofasetofprocessesthateithercompeteforsystemresourcesorcommunicatewitheachotheriscalled:选择一个答案ca.Alloftheaboveb.Prioritizationc.Deadlockd.StarvationIndeadlockedprocessrecovery,selectioncriteriaforchoosingaparticularprocesstoabortorrollbackincludesdesignatingtheprocesswiththe:选择一个答案ba.Leasttotalresourcesallocatedsofarb.Alloftheabovec.Mostestimatedtimeremainingd.LowestpriorityOneapproachtoanintegratedstrategyfordealingwithdeadlocksinvolvestheimplementationof:选择一个答案da.Virtualmemoryb.Processrollbacksc.Noneoftheaboved.ResourceclassesTheDiningPhilosopher’sProblemisastandardtestcaseforevaluatingapproachestoimplementing:d选择一个答案a.Starvationb.Deadlockc.Alloftheaboved.SynchronizationAsoftwaremechanismthatinformsaprocessoftheoccurrencesofasynchronouseventsinUNIXarecalled:a选择一个答案a.Signalsb.Messagesc.Pipesd.AlloftheaboveThreadsynchronizationprimitivessupportedbySolarisinclude:选择一个答案ba.Semaphoresb.Alloftheabovec.Mutualexclusion(mutex)locksd.ConditionvariablesThefamilyofsynchronizationobjectsimplementedbyW2Kinclude:选择一个答案ba.Mutexobjectsb.Alloftheabovec.Eventobjectsd.SemaphoreobjectsAlldeadlocksinvolveconflictingneedsforresourcesby:选择一个答案aa.Twoormoreprocessesb.Threeormoreprocessesc.Oneormoreprocessesd.Noneoftheabove分数:8/8Aresourcethatcanbecreatedanddestroyediscalleda:选择一个答案da.Reusableresourceb.Producibleresourcec.Alloftheaboved.Consumableresource分数:7/7Anexampleofaconsumableresourceisthefollowing:选择一个答案ba.Printersb.Messagesc.Alloftheaboved.MainMemoryAconditionofpolicythatmustbepresentforadeadlocktobepossibleis:选择一个答案ca.Holdandwaitb.Mutualexclusionc.Alloftheaboved.NopreemptionAdirectmethodofdeadlockpreventionistopreventtheoccurrenceof:选择一个答案ba.Holdandwaitb.Circularwaitc.Alloftheaboved.MutualexclusionIntheResourceAllocationDenialapproachtoDeadlockAvoidance,asafestateisdefinedasoneinwhich:选择一个答案ba.Allpotentialprocesssequencesdonotresultinadeadlock:b.Atleastonepotentialprocesssequencedoesnotresultinadeadlockc.Noneoftheaboved.Severalpotentialprocesssequencesdonotresultinadeadlock:分数:7/7Aconservativestrategyfordealingwithdeadlocksthatinvolveslimitingaccesstoresourcesandimposingrestrictionsonprocessesiscalled:选择一个答案aa.DeadlockPreventionb.Noneoftheabovec.DeadlockAvoidanced.DeadlockDetection第七章分数:6/6ThetaskofsubdividingmemorybetweentheO/SandprocessesisperformedautomaticallybytheO/Sandiscalled:选择一个答案aa.MemoryManagementb.Relocationc.Alloftheaboved.ProtectionAreferencetoamemorylocationindependentofthecurrentassignmentofdatatomemoryiscalleda:选择一个答案ca.Relativeaddressb.Noneoftheabovec.Logicaladdressd.AbsoluteaddressAnactuallocationinmainmemoryiscalleda:选择一个答案ba.Logicaladdressb.Absoluteaddressc.Relativeaddressd.NoneoftheaboveThepagetableforeachprocessmaintains:选择一个答案da.Thephysicalmemorylocationoftheprocessb.Thepagelocationforeachframeoftheprocessc.Noneoftheaboved.TheframelocationforeachpageoftheprocessInasystememployingapagingschemeformemorymanagement,wastedspaceisdueto:选择一个答案da.Noneoftheaboveb.Pagesandframesofdifferentspecifiedsizesc.Externalfragmentationd.Internalfragmentation分数:7/7Inasystememployingasegmentationschemeformemorymanagement,wastedspaceisdueto:选择一个答案da.Segmentsofdifferentsizesb.Noneoftheabovec.Internalfragmentationd.Externalfragmentation分数:7/7Inasystememployingasegmentationschemeformemorymanagement,aprocessisdividedinto:选择一个答案ba.Noneoftheaboveb.Anumberofsegmentswhichneednotbeofequalsizec.Anumberofsegmentswhichmustbeofequalsized.Onesegmentperthread分数:7/7TheconceptofMemoryManagementsatisfiescertainsystemrequirements,including:选择一个答案ca.Protectionb.Physicalorganizationc.Alloftheaboved.RelocationThepracticeinwhichaprogramanddataareorganizedinsuchawaythatvariousmodulescanbeassignedthesameregionofmemoryiscalled:选择一个答案ca.Relocationb.Sharingc.Overlayingd.Noneoftheabove分数:7/7Theconceptofvirtualmemoryisbasedononeorbothoftwobasictechniques:选择一个答案aa.Segmentationandpagingb.Overlayingandrelocationc.Noneoftheaboved.Segmentationandpartitioning分数:7/7AproblemwiththelargelyobsoleteFixedPartitioningmemorymanagementtechniqueisthatof:选择一个答案ca.AllowingonlyafixednumberofProcessesb.Internalfragmentationc.Alloftheaboved.Inefficientuseofmemory分数:7/7Theproblemofinternalfragmentationcanbelessenedinsystemsemployingafixed-partitionmemorymanagementschemebyusing:选择一个答案aa.Unequalsizepartitionsb.Equalsizepartitionsc.Randomsizepartitionsd.Noneoftheabove分数:7/7IntheDynamicPartitioningtechniqueofmemorymanagement,thephenomenonthatresultsinunusedblocksofmemoryoutsideofexistingpartitionsiscalled:选择一个答案ba.Noneoftheaboveb.Externalfragmentationc.Compactiond.Internalfragmentation分数:7/7IntheDynamicPartitioningtechniqueofmemorymanagement,theplacementalgorithmthatchoosestheblockthatisclosestinsizetotherequestiscalled:选择一个答案aa.Best-fitb.Alloftheabovec.Next-fitd.First-fitIntheDynamicPartitioningtechniqueofmemorymanagement,theplacementalgorithmthatscansmemoryfromthelocationofthelastplacementandchoosesthenextavailableblockthatlargeenoughtosatisfytherequestiscalled:选择一个答案aa.Next-fitb.Alloftheabovec.Best-fitd.First-fit第八章分数:6/6Thetypeofmemorythatallowsforveryeffectivemultiprogrammingandrelievestheuserofmemorysizeconstraintsisreferredtoas:选择一个答案ba.Realmemoryb.Virtualmemoryc.Mainmemoryd.AlloftheaboveThereplacementpolicythatisimpossibletoimplementbecauseitwouldrequiretheO/Stohaveperfectknowledgeoffutureeventsiscalledthe:选择一个答案aa.Optimalpolicyb.Noneoftheabovec.Leastrecentlyused(LRU)policyd.ClockpolicyThereplacementpolicythatchoosesonlyamongtheresidentpagesoftheprocessthatgeneratedthepagefaultinselectingapagetoreplaceisreferredtoasa:选择一个答案ca.Noneoftheaboveb.Variablereplacementpolicyc.Localreplacementpolicyd.GlobalreplacementpolicyTheconceptassociatedwithdeterminingthenumberofprocessesthatwillberesidentinmainmemoryisreferredtoas:选择一个答案ca.LoadControlb.Acleaningpolicyc.Thepagefaultfrequencyd.NoneoftheaboveInSVR4andSolarissystems,thememorymanagementschemethatmanagesuserprocessesanddiskI/Oiscalledthe:选择一个答案ca.Virtualmemorymanagerb.Noneoftheabovec.Pagingsystemd.KernelmemoryallocatorThemulti-levelmemorymanagementschemeimplementedinLinuxwasdesignedtominimizelargepagetablesanddirectoriesinwhichofthefollowinglineofprocessors:选择一个答案ca.Noneoftheaboveb.32-bitPentium/X86architecturec.64-bitAlphaarchitectured.16-bitX86architecture分数:7/7TheWindows2000virtualmemorymanagercanusepagesizesrangingfrom:选择一个答案da.4GBto4TBb.64KBto4GBc.Noneoftheaboved.4KBto64KBThesituationwheretheprocessorspendsmostofitstimeswappingprocesspiecesratherthanexecutinginstructionsiscalled:选择一个答案aa.Thrashingb.Pagingc.ThePrincipleofLocalityd.NoneoftheaboveThesituationthatoccurswhenthedesiredpagetableentryisnotfoundintheTranslationLookasideBuffer(TLB)iscalleda:选择一个答案aa.TLBmissb.Pagefaultc.Noneoftheaboved.TLBhit<p>Therealaddressofawordinmemoryistranslatedfromthefollowingportionsofavirtualaddress:</p>选择一个答案da.Framenumberandoffsetb.Noneoftheabovec.Pagenumberandframenumberd.PagenumberandoffsetSegmentationhasanumberofadvantagestotheprogrammeroveranon-segmentedaddressspace,including:选择一个答案ca.Sharingamongprocessesb.Simplifyingthehandlingofgrowingdatastructuresc.Alloftheaboved.Protection分数:0/7Inacombinedpaging/segmentationsystem,auser’saddressspaceisbrokenupintoanumberof:选择一个答案aa.Variable-sizedSegments,whichareinturnbrokendownintofixed-sizepagesb.Segmentsorpages,atthediscretionoftheprogrammerc.Alloftheaboved.Fixed-sizepages,whichareinturnbrokendownintovariable-sizedsegmentsSharingisachievedinasegmentationsystemby:选择一个答案ba.Eachprocesssegmenttablehavingareferencetothedispatchermainmemoryareab.Referencingasegmentinthesegmenttablesofmorethanoneprocessc.Havingacommondataareathatallprocessescanshared.AlloftheaboveAfundamentalchoiceinthedesignofthememory-managementportionofanO/Sis:选择一个答案aa.Alloftheaboveb.Thealgorithmsemployedforvariousaspectsofmemorymanagementc.Whetherornottousevirtualmemorytechniquesd.Whethertousepaging,segmentationofacombinationofthetwo选择一个答案da.Noneoftheaboveb.Swappingc.Demandpagingd.Prepaging第九章分数:6/6<p>Thetypeofschedulingthatinvolvesthedecisiontoaddaprocesstothosethatareatleastpartiallyinmainmemoryandthereforeavailableforexecutionisreferredtoas:</p>选择一个答案da.I/Oschedulingb.Noneoftheabovec.Long-termschedulingd.Medium-termscheduling分数:6/6<p>OnedifficultywiththeShortestProcessNext(SPN)schedulingtechniqueis:</p>选择一个答案da.Thelackofpreemptionb.Theneedtoknoworestimaterequiredprocessingtimesforeachprocessc.Thestarvationoflongerprocessesd.Alloftheabove分数:6/6<p>OnedifficultywiththeShortestRemainingTime(SRT)schedulingtechniqueis:</p>选择一个答案ca.Thelackofpreemptionb.Thestarvationofshorterprocessesc.Theneedtoknoworestimaterequiredprocessingtimesforeachprocessd.Alloftheabove<p>Whichofthefollowin