Test01(选择题)

TestBank—ChapterOne(DataRepresentation)MultipleChoiceQuestions1.WhichofthefollowingBooleanoperationsproducestheoutput1forthefewestnumberofinputpatterns?A.ANDB.ORC.XORANSWER:A2.WhichofthefollowingbestdescribestheNORoperation?A.AnXORfollowedbyaNOTB.AnORfollowedbyaNOTC.ANOTfollowedbyaNOTC.AnANDfollowedbyaNOTANSWER:B3.Whichofthefollowingbitpatternscannotbeexpressedinhexadecimalnotation?A.11111111B.1001C.110011D.100000000001ANSWER:C4.Whichofthefollowingisthebinaryrepresentationof45/8?A.100.11B.10.011C.110.101D.100.101ANSWER:D5.Whichofthefollowingbitpatternsrepresentsthevalue5intwo’scomplementnotation?A.00011010B.11111011C.00000101D.11111011ANSWER:C6.Whichofthefollowingbitpatternsrepresentsthevalue-5intwo’scomplementnotation?A.00011010B.11111011C.00000101D.11111011ANSWER:D7.Inwhichofthefollowingadditionproblems(usingtwo’scomplementnotation)doesanoverflowerroroccur?A.0011B.0100C.1100+1010+0100+1100ANSWER:B8.Whichofthefollowingrepresentationsintwo’scomplementnotationrepresentsthelargestvalue?A.00000010B.11111111C.00000001D.11111110ANSWER:A9.Whichofthefollowingbitpatterns(representedinhexadecimalnotation)representsanegativenumberintwo’scomplementnotation?A.7FB.55C.A6D.08ANSWER:C10.Whatvalueisrepresentedbythebitpattern01011100wheninterpretedusingfloating-pointformatinwhichthemostsignificantbitisthesignbit,thenextthreebitsrepresenttheexponentfieldinexcessnotation,andthelastfourbitsrepresentthemantissa?A.-11/2B.11/2C.-3/8D.3/8ANSWER:B11.Whichofthefollowingvaluescannotbestoredaccuratelyusingafloating-pointformatinwhichthemostsignificantbitisthesignbit,thenextthreebitsrepresenttheexponentfieldinexcessnotation,andthelastfourbitsrepresentthemantissa?A.21/2B.3/16C.7D.61/4ANSWER:D121.Whichofthefollowingbit-patternsrepresentsthesmallestvalueusingthefloating-pointformatinwhichthemostsignificantbitisthesignbit,thenextthreebitsrepresenttheexponentfieldinexcessnotation,andthelastfourbitsrepresentthemantissa?A.01001000B.01011000C.00101000D.01111000ANSWER:C13.Whichofthefollowingdatastoragesystemsprovidesthemostefficientrandomaccesstoindividualdataitems?A.MainmemoryB.MagneticdiskC.OpticalCDsandDVDsANSWER:A14.Whichofthefollowingstoragesystemsisbestsuitedforstoringandretrievinglongstringsofdatathatareprocessedintheirsequentialorder?A.MainmemoryB.MagneticdiskC.OpticalCDsandDVDsANSWER:C15.Whichofthefollowingmassstoragesystemdoesnotrequirephysicalmotion?A.MagnetictapeB.MagneticdiskC.DVDsD.FlashdrivesANSWER:D16.Assumingthateachofthefollowingbitpatternsoriginallyhadevenparity,whichonecontainsanerror?A.10110100B.11000011C.00011000D.10001001ANSWER:D17.HowmanydifferentsymbolscanbeencodedusingUnicode?A.256B.4,096C.65,536D.1,046,476ANSWER:C18.Whichofthefollowingsystemsisleastefficientwhenencodingnumericvalues?A.Two’scomplementnotationB.ExcessnotationC.ASCIID.Floating-pointnotationANSWER:C19.Whichofthefollowingisameansofencodingmusic?A.ASCIIB.MIDIC.JPEGD.GIFANSWER:B