四川大学操作系统课件 选择题库2.pdf

《四川大学操作系统课件 选择题库2.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、MultipleChoiceQuestions11.Thegeneralroleofanoperatingsystemisto:a.Provideasetofservicestosystemusersb.Managefilesforapplicationprogramsc.Actasaninterfacebetweenvariouscomputersd.Noneoftheabove2.Informationthatmustbesavedpriortotheprocessortransferringcontroltoth

2、einterrupthandlerroutineincludes:a.(PSW)&Contentsofprocessorregistersb.ProgramStatusWord(PSW)c.Noneoftheaboved.(PSW)&Locationofnextinstruction3.Oneacceptedmethodofdealingwithmultipleinterruptsisto:a.Servicetheminround-robinfashionb.Disableallinterruptsexceptthos

3、eofhighestpriorityc.Noneoftheaboved.Defineprioritiesfortheinterrupts4.Inauniprocessorsystem(单处理器系统),multiprogramming(多道程序设计)increasesprocessorefficiencyby:a.Takingadvantageoftimewastedbylongwaitinterrupthandlingb.Eliminatingallidleprocessorcyclesc.Alloftheaboved

4、.Increasingprocessorspeed5.Asoneproceedsdownthememoryhierarchy(i.e.,frominboardmemorytoofflinestorage),thefollowingcondition(s)apply:a.Decreasingcapacityb.Increasingaccesstimec.Alloftheaboved.Increasingcostperbit6.Small,fastmemorylocatedbetweentheprocessorandmai

5、nmemoryiscalleda.WORMmemoryb.CD-RWmemoryc.Noneoftheaboved.Cachememory7.Whenanewblockofdataiswrittenintocachememory,thefollowingdetermineswhichcachelocationtheblockwilloccupy:a.Noneoftheaboveb.Cachesizec.Blocksized.Writepolicy8.Thefourmainstructuralelementsofacom

6、putersystemare:a.Noneoftheaboveb.Processor,Registers,MainMemory&SystemBusc.Processor,MainMemory,I/OModules&SystemBusd.Processor,Registers,I/OModules&MainMemory9.Thetwobasictypesofprocessorregistersare:a.User-visibleandControl/Statusregistersb.ControlandStatusreg

7、istersc.User-visibleanduser-invisibleregistersd.Noneoftheabove10.Addressregistersmaycontaina.Partialmemoryaddressesb.Memoryaddressesofdatac.Memoryaddressesofinstructionsd.Alloftheabove11.AControl/Statusregisterthatcontainstheaddressofthenextinstructiontobefetche

8、discalledthe:a.ProgramCounter(PC)b.Alloftheabovec.InstructionRegister(IR)d.ProgramStatusWord(PSW)12.Thetwobasicstepsusedbytheprocessorininstructionprocessingare:a.Non