信息安全基础样卷

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1、选择题10*2分1.Whowrotethefirstcomputerviruswhichspreadwidely?()(a)KevinMitnick(b)RobertMorris(c)RonRivest(d)ClaudeShannon2.Theattackwaysofinterruption&fabricationdestroythesecurityattributesof(e)&(c)・(a)Confidentiality(b)Integrity(c)Authenticity(d)Authentication(e)Availability3.TheH

2、omophonecipherbelongsto()・(a)Single-letter&monoalphabetic(b)Single-letter&polyalphabetic(c)Multi-letter&monoalphabetic(d)Multi-letter&polyalphabetic4.WhichstepofDESalgorithmtransformsinputof56-bittooutputof48-bit?()(a)Etable(b)Sbox(c)Ppermutation(d)Permutatedchoice25.Complementa

3、rySymmetryofDESmakestheworkloadof()attackhalfofthenormal.(a)Ciphertextonly(b)Plaintextonly(c)Chosenplaintext(d)Knownplaintext6.Whichofthefollowingtechnologyiscalled"DigitalFingerprint?()(c)HashValue(a)MessageAuthenticationCode(b)MessageEncryption(d)DigitalSignature1.Whichitemisn

4、otnecessaryforacertificatecomparatively?()(a)Serialnumber(b)Subjectname(c)ValueofPU(d)SignaturemadebyCA2.InPKI,CAshouldn'tbackup().(a)PUforencryption(b)PRforencryption(c)PUforsignature(d)PRforsignature3.ThecharacterofBibaaccesscontrolmodeis(a),whichcanensure(D・(a)ReadUp,WriteDow

5、n(b)ReadDown,WriteUp(c)ReadUp,WriteUp(d)ReadDown,WriteDown(e)Secrecy(f)Integrity10・InTCSEC,Converttimingchannelisthecharacteristicof()・(a)B1(b)B2(c)B3(d)Al(e)BeyondA1注：9和10本次课没有讲到，是第五章的内容填空题10*1分1.TheadvantagesofConventionalCipherarespeedyforencryption&decryption;theadvantagesof

6、PublicKeyCipherareeasytodistribute&manaEekeynrealizedigitalsignature2.ThetwofactorstakenintoconsiderationofComputationalSecurityiscost&time・3.ThecoreoperationofVernamCipherisXOR••24.A2-rotormachinewith26lettershasaperiodof676(26)・(howmanyalphabets)5.TheS-Box6TableofDESisasfollow

7、s,theoutputofinput"101010"is1000・0123456789ABCDEF0C1AF92680D34E75B1AF427C9561DE0B3829EF528C3704A1DB63432C95FABE17608D6.The3factorsofaccesscontrolare,and简答题4*10分1.What'sthedifferencebetweenPassiveAttack&ActiveAttack?Givesomeexamplesofeach.Howtoprotectinformationagainstthetwoattac

8、ks?PassiveAttack:onlyinvolveeavesdropping&monit