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-*Whichfunctionisusedforstartingaprocess?A.wait()B.exec()C.exit()D.fork()-*Whichisnotoneofthemajordifferencesbetweenuser-levelthreadsandkernel-levelthreads?A.Oneuser-levelthreadcanbeonlymappedbeonekernelthread.B.Userthreadsarescheduledbythethreadlibraryandthekernelscheduleskernelthreads.C.User-levelthreadsareunknownbythekernel,whereasthekernelisawareofkernelthreads.D.Kernelthreadsneednotbeassociatedwithaprocesswhereaseveryuserthreadbelongstoaprocess.-*Inoperatingsystem,whichsturctureisusedforcontrollingandmanagingtheprocessexecutionA.interruptB.systemkernelC.semaphoreD.processcontrolblock+？Whenaprocesschangesstate,whichofthefollowingconversionwillnotoccur？A.Running-ReadyB.Ready-RunningC.Waiting-RunningD.Running-Waiting-*Iftherearefiveprocessesinthesystem,howmanyprocessesatmostmaybeunderthewaitingstateatthesametime.A.0B.5C.4D.1-Whichoneofthefollowingsisnotamethodforcommunicationbetweenprocesses.A.sharingmemoryB.messagebufferC.pipeD.semaphoreoperationswaitandsignal+-*Withindirectcommunication,themessagesaresenttoandreceivedfrom__________.A.supplyB.chanelC.pipeD.mailbox-*WhichinformationisnotincludedinPCBA.pagesizeB.memoryaddressC.priorityD.processID+-*Oneprocessmayincludemanythreads.Whichoneofthefollowingsisnotoccupiedbyonlythread?A.threadcontrolblockB.stackC.memoryspaceD.CPU+-Inbanchsystem,jobschedulingprogramchoosesmultiplejobsfromthejobqueueandputthemintoA.externalstorageB.cacheC.memoryD.pool?*Thepurposeofreal-timeoperatingsystemisA.utilizationratioofthecomputersystemB.interactivityofthecomputersystemC.reliabilityofthecomputersystemD.increasespeedofsoftware+-Whichofthefollowingstatementisnottrueregardingsystemcalls?A.Systemcallsarefunctionsthatruninsystemmodeinadualmodesystem.B.Systemcallsarefunctionsdefinedaspartoftheoperatingsystems.C.Systemcallsarefunctionsthatruninusermodeinadualmodesystem.D.Systemcallsareimplementedusingatrapinstructionwhichgeneratesaninterrupt.+*ThemainobjectiveoftimesharingsystemisA.quickresponseB.reducesystemcostC.highthroughoutD.fulluseofmemoryWhichoneiswrongwithoperatingsystem?A.operatingsystemprovidesafriendlyinterfaceforusersB.operatingsystemistheresourcemanagerandarbitratorC.operatingsystemmanagesallkindsofresourcesinthesystemD.operatingsystemisanapplicationsoftwareincomputersystem+-Incomputersystem,thetechnologythatallowsmultipleprogramsenterthememoryandexecuteatthesametimeiscalledA.SpoolingB.multi-programmingC.cachingD.virtualmemory+*Whichkindofoperatingsystemshaswell-defined,fixedtimeconstraints?A.time-sharingB.networksystemC.real-timeD.batchsystem+*Whatisnotthemajoractivityofanoperatingsystem?A.MainmemorymanagementB.FilemanagementC.UsermanagementD.I/Osystemmanagement+Inuserprogram,operatingsystemservicesarerequestedbyA.terminalcommandB.primitiveC.systemcallD.jobcontrollanguage*WhichofthefollowingperformsinterruptresponseA.systemkernelB.userprogramC.interrupthardwareD.interrupthandler*Whichelementisnotpartofamicrokernel?A.memorymanagementB.IPCmechanismsC.afilesystemD.basicI/O-*WhichonecanidentifytheexistenceandstateofaprocessA.PCBB.CAWC.PSWD.CCW+-WhichoneofthefollowingisnotafeatureofprocessA.concurrencyB.staticC.sharabilityD.interactivity+-Whichenvironmentconsidersmemory,process,anddeviceandfilemanagementfromaglobalviewpoint?A.DistributedOperatingSystemB.NetworkOperatingSystemC.MultiprogrammingOperatingSystemD.NoneoftheaboveOndesigningbatchsystem,weshouldfirstconsiderA.interactivityB.flexibilityC.thebalanceofresouceutilizationD.responsetime+Inmultiprogrammingsystem,operatingsystemallocatesresourcesinA.instructionB.threadC.programD.process*Inmultiprogrammingsystem,inordertoachievethefullutilizationofresources,therunningprogramshouldA.besuitabletomemoryallocationB.haveasoundbalancebetweencomputingandI/OC.bewithmassiveI/OD.bewithmassivecomputationThepurposeofmultiprogrammingisA.improvetheapplicabilityofthesystemB.enhancethefriendlinessofthesystemC.fullutilizationofCPUD.enlargememorycapacityTheoperatingsystemis__________.A.AuserprogramB.ApplicationsoftwareC.SystemsoftwareD.Hardware+?Thecomputersystemconsistsof(fromdowntoup)A.compilesystem,operatingsystem,supportsoftware,applicationsoftwareB.supportsoftware,operatingsystem,compilesystem,applicationsoftwareC.applicationsoftware,compilesystem,supportsoftware,operatingsystemD.operatingsystem,compilesystem,supportsoftware,applicationsoftware+*Inoperatingsystem,whichfunctiondoesnotneedhardwaresupportA.addressmappingB.clockmanagementC.processschedulingD.interrupt+-*Ifaprocessiswaitingforprintertocontinueexecuting,itisunderwhichsate?A.waitingB.runningC.readyD.stopped+-Aprocessmaybeinoneofthefollowingstates,except________.A.interruptedB.newC.waitingD.Running+-*Inoperatingsystem,whenaprocessturnstoreadyfromrunning,itindicatesA.waitforsomeeventB.theprocessischosenbyschedulerC.thewaitingeventhappensD.time-sliceisusedout+-Whatstateisaprocessinwhenitcannotrunbecauseitneedsaresourcetobecomeavailable?A.BlockedB.RunningC.ReadyD.interrupt+-Whichissetinprogramstateword(PSW)toavoidtheuserprogramexecutingspecialinstructionsA.ConditionbitB.Prote