重庆大学操作系统全英文期末考试题-带答案

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1、XX大学2011——2012学年第一学期《操作系统》期末考试试题（A）二.选择题(20分，每题1分)1.Generallyspeaking,whichoneisnotthemajorconcernforaoperatingsysteminthefollowingfouroptions?(D)A.ManagethecomputerB.ManagethesystemresourcesC.Designandapplytheinterfacebetweenuser'sprogramandcomputerhardwaresystemD.High-levelprogramm

2、inglanguagecomplier2.Themaindisadvantageofbatchsystemis(C)A.CPUutilizationislowB.CannotconcurrentC.LackofinteractionA.Lowdegreeofautomation1.Aprocesstransformsfromwaitingstatetoreadystateiscausedbythe(B)A.InterrupteventB.ProcessschedulingC.CreateaprocessforaprogramD.Waitingforsomeeve

3、nts2.Theconcurrentprocessisrefersto(C)A.TheprocesscanberuninparallelB.TheprocesscanberuninorderC.TheprocesscanberuninthesametimeD.Theprocesscannotbeinteirupted3.Inmulti-processsystem,inordertoensuretheintegrityofpublicvariables,theprocessesshouldbemutuallyexclusiveaccesstocriticalare

4、as.Theso-calledcriticalareais(D)A.AbufferB.AdateareaC.SynchronizationmechanismD.Aprogram4.Theorderlyuseofresourcesallocationstrategycandestroythecondition(D)toavoiddeadlock.A.MutualexclusiveB.HoldandwaitC.NopreemptionD.Circularwait5.User'sapplicationsusethesystemresourcestocompleteit

5、soperationbythesupportandservicesof(C)A.clickingthemouseB.KeyboardcommandC.SystemcallD.Graphicaluserinterface6.Therearefourjobsarrivedatthesametimeandtheexecutiontimeofeachjobis2h・Nowtheyrunononeprocessoratsinglechannel.thentheaverageturnaroundtimeis(B)A」hB.5hC.2.5hD.8h7.Amongthejobs

6、chedulingalgorithms,(B)isrelatedtothejob'sestimatedrunningtime.A.FCFSschedulingalgorithmB.Short-job-firstschedulingalgorithmA.Highresponseratioalgorithm□.BalancedschedulinglO.Inmemorymanagement,thepurposeofusingtheoverlayandswappingis(C)A.SharingmainmemoryB.Expandingmainmemoryphysica

7、llyC.SavingmainmemoryspaceDJmprovingCPUutilization11.Inthepage-replacementalgorithm,whichonecancausetheBeladyphenomenon?(A)A.FIFOB.LRUC.CLOCKINGD.OPT12.Thefollowingdescriptionofthesysteminsafestate,whichoneiscorrect?(B)A.ItmustcausedeadlockifthesystemisininsecurestateB.Itmaycausedead

8、lockifthesys