Multiple-Choice-Questions-11

MultipleChoiceQuestions11Question1Afileisgenerallydefinedtobe:选择一个答案a.Alloftheaboveb.Acollectionofrelatedfieldsc.Abasicelementofdatad.Acollectionofsimilarrecords√Question2Fixedfileblockingexperiencesthefollowingpotentialproblem:选择一个答案a.Externalfragmentationb.Noneoftheabovec.Internalfragmentation√d.GapsduetohardwaredesignQuestion3Inwhichofthefollowingfileallocationmethodsispreallocationrequired:选择一个答案a.Indexedb.Noneoftheabovec.Chainedd.Contiguous√Question4Thetechniqueoffreediskspacemanagementthatemploysapointerandlengthvalueofeachfreeportionisthe:选择一个答案a.Noneoftheabove√b.Freeblocklistc.Bittablesd.IndexingQuestion5Thedatastructurethatmaintainsinformationonavailablediskspaceiscalledthe:选择一个答案a.FileAllocationTable(FAT)b.Noneoftheabovec.BitTabled.DiskAllocationTable√Question6FileallocationinaUNIXsystemhasthefollowingcharacteristics:选择一个答案a.Dynamicallocationusingnon-contiguousblockswithindexing√b.Preallocationusingnon-contiguousblockswithoutindexingc.Noneoftheaboved.DynamicallocationusingcontiguousblockswithoutindexingQuestion7InaW2KNTFSfilesystem,thesmallestphysicalstorageunitonthedisk(almostalways512bytes)iscalleda:选择一个答案a.Clusterb.Volumec.Sector√d.NoneoftheaboveQuestion8Thelevelofthefilesystemarchitecturethatenablesusersandapplicationstoaccessfilerecordsiscalledthe:选择一个答案a.LogicalI/Olevel√b.Alloftheabovec.BasicI/Osupervisorleveld.BasicfilesystemlevelQuestion9Recordaccessinapilefilecanbeconductedby:选择一个答案a.Keyfieldb.Alloftheabovec.Exhaustivesearch√d.PartialindexQuestion10Sequentialfilesareoptimalinscenariosinvolving:选择一个答案a.Applicationsthatrequireinfrequentupdatesb.Alloftheabovec.Applicationsthatrequirefrequentqueriesd.Applicationsthatrequiretheprocessingofallrecordsinthefile√Question11Indexedsequentialfilessimilartosequentialfiles,butcontaintwoaddedfeatures:选择一个答案a.Fileindexandoverflowfile√b.Hashfunctionandanoverflowfilec.Alloftheaboved.HashfunctionandfileindexQuestion12Directorhashedfilesareoftenusedwhere:选择一个答案a.Fixedlengthrecordsareusedb.Alloftheabove√c.Veryrapidaccessisrequiredd.RecordsarealwaysaccessedoneatatimeQuestion13Thefiledirectoryinformationelementthatholdsinformationsuchastheidentityofthecreatorofthefileisthe:选择一个答案a.Alloftheaboveb.Addressinformationelementc.Usageinformationelement√d.AccesscontrolinformationelementQuestion14Inatree-structureddirectory,theseriesofdirectorynamesthatculminatesinafilenameisreferredtoasthe:选择一个答案a.Pathname√b.Workingdirectoryc.Noneoftheaboved.SymbolicnameQuestion15Accessrightsonafiletypicallyareconsideredtoconstituteahierarchy,witheachrightimplyingthosethat:选择一个答案a.Precedeit√b.Succeeditc.Noneoftheaboved.Supercedeit