西南大學(xué)信息安全2015年春作業(yè)答案

1、livingstardspofarmersinlessthancompleteeliminationof4600Yuan894919008.“Fivewatersrule“:theCountyinvested2.169billionyuansimilarcountieslinethecitysfirstcompletethe42kmofsewagepipewkconstructioncompletionraterankedfirstin

2、thecitywontheprovincialruralsewagetreatmentwkbetterkeypollutionsourcessuchaselectroplatingpapermakingchemicalindustrymanagementthroughverificationacceptanceofthemunicipalgovernmenttheCountyremovedBlackodousRiverRiverwast

3、ebeginningofriverecologicalrestationeffects.“Threemodifiedasplit“aspects:Countytotaldemolitionillegalareaup2.759millionsquaremeterscompletedCityissuedannualtaskof153%splitagainstarearankingcitysecondcompleted“threemodifi

4、ed“area4.846millionsquaremeterscompletedCityissuedannualtaskof403%rankingcitythirdwhichvillageintheatargetcompletedtotalcityrankingfirstCountyGovernmentwasnamedcitylevel“threemodifiedasplit“wkadvanced.Theseachievementsar

5、ehardwonshouldbeappreciated.HoweverwearefullyawarethenewperiodwkinthecountrysidetheenvironmentfacinghigherstardsrequirementsprovincialpartyCommitteeofferedtohighlevelbuildacomprehensivewelloffsocietygoalrequires“nofilthd

6、irtyenvironmentillegalbuildingsintoawelloff“municipalpartyCommitteealsoproposestobuildintothewelloffbenchmarkgoalsofthecity.Comparedwiththesupericlaim“SouthGateofXXbeautiful“goalmyCounty“SanNong“environmentthereareanumbe

7、rofweaknessesgapshighlightedinthefollowingfiveaspects:firstagricultureremained“l(fā)ow“pattern.“Low“isreflectedinthequalitylowshtvalueaddedoftheindustrychainislow123fusionyieldlowemployeeagelowquality.“Small“isreflectedinsma

8、llerspecializedcooperativesthroughouttheCountytherewere3396butonthescaleoftoolittle.“San“isreflectedinproductionmanagementservicesdecentralizedcentralizedstardizedbrinfmationganizationallevelisnothigh.Secondthecountrysid

9、eisstillin“dirty“phase.“Dirty“isdirtyofruralsanitationsituationhasnotchanged.“Chaos“isavillageinruralhousingconstructionplanningconstructionofdisdernodrawingsnoconstructionnovetting“fourno“phenomenonheaplyingthere.“Bad“i

10、stheweakruralbasevillagegovernanceispo.Thirdlyfarmerscontinuedtobe“persistent“l(fā)ook.“Old“isagingrurallabfceaccountedf70%overtheageof50.“Big“isthattherefmmeasuresgroundresistancesuchasthetransactionsofpropertyrightslreplac

11、ementpublicservicesupplygapruraleducationhealthcarepensionsotherservicescannotmeetthedemstilldifficultfpovertyalleviationwithemphasisonpovertyalleviation191.“Hard“isa“peasantspeasants.Fourwatereffectsstilllackscompelling

12、.“Althoughthe“fivewatertreatment“alotwkveryhardbutthefloodofscientificenoughbefethetreatmentwaterqualityimprovementafterthetreatmenteffectisnotobviouscountywidefocusonriverstilllargelyinferifivewaterswimmingtheRivercould

13、notbefound.Fiveis“threetosplit“taskstillliesahead.Noticeofstocktherenewconstructiondidnotreceivetimelytreatmenteveryyear(suchasancestralhallasunauthisedrepeated)contrarytothecreatedwkisverydifferentfromtheprovincialmunic

14、ipalstards.Meanwhilewhenimplementationisnotinplacegenerallyonlyfocusonillegalconstructiondemolishedfailingthatsplitthatisclearcombineddemolitioninsufficientattentiontoreconstructionofoldresidentialareasurbanvillagesshant

15、ytownspromotepo.Tosolvetheseproblemswemustenhancethesenseofresponsibilityurgencyinsistonproblemientedtotakestrongmeasuresefftstomakeupthe“threeagriculture““fivewatertreatment““threetosplita“shtBoardconstructionofcomprehe

16、nsivesafeguards“SouthGateofXXbeautiful“goalofrealizing.IIprecisionShipolicymanpowerplayinggood“threeagricultural“wkprotracted“threeagricultural“wkisdoeconomicsocialdevelopmentthewkofbasedcountylevelsthesecttoaccdingto“ba

17、sedagriculturalmanpowerruraldevelopmentfarmers“ofrequirementsinsistedagriculturalruralbasedstatusnotshakeinsistedhuinongkulakpolicynotweakenedinsistedrefminnovationtestnotstopefftscreatednewera“threeagricultural“wknewsit

18、uation.(A)tomakeagricultureme.Toestablishtheconceptofagriculturearoundthepeopledemcomprehensivelypromotethesupplysideofagriculturestructuralrefmstrivetoenhancethequalityefficiencyofagriculturecompetitiveness.Focusisondoi

19、ngthefourarticles.Oneisthesteadyincreaseofgrainarticle.Alwaystightenthestringffoodsecurity“ricebag“catchinhtoholdlintheadjustmentofagriculturalplantingstructureinthe“redline.“Acceleratingtheconstructionofgrainribbonsimpr

20、ovingagriculturalinfrastructureenhancefoodproductioncapacityimprovethequalityofagriculturalproductseffectively“steadyincreaseofgrain“maintain“tongue.“Secondindustryconvergencearticle.Enhancethelevelofconcentrationintensi

21、ficationofagriculturecreatingproductionprocessingdistributionsalesserviceinoneoftheagriculturalindustrialchaintobreakdownthevaluechainimproveaddedvalue.Pushingfward“theInteragricultural“modeltoimproveagriculturalproducti

22、onmanagementservicelevelinnovatingthemodeofecommercemarketingofagriculturalproductssolvethedifficultproblemofsalesofagriculturalproducts.Agriculturetourismeducationculturehealthpensionotherdeepintegrationdevelopleisuretr

23、avel第一次作業(yè)論述題：1、它是數(shù)字簽名的新的應(yīng)用。首先生成兩條消息的摘要，將兩個(gè)摘要連接起來，生成一個(gè)新的摘要（稱為雙重簽名），然后用簽發(fā)者的私有密鑰加密，為了讓接收者驗(yàn)證雙重簽名，還必須將另外一條消息的摘要一起傳過去。這樣，任何一個(gè)消息的接收者都可以通過以下方法驗(yàn)證消息的真實(shí)性：生成消息摘要，將她和另外一個(gè)消息摘要連接起來，生成新的摘要，如果它與解密后的雙重簽名相等，就可以確定消息是真實(shí)的。2、目前還有一種標(biāo)準(zhǔn)的定義，常見的是對(duì)這

24、種攻擊形式、特點(diǎn)的描述。微軟技術(shù)中心從兩個(gè)方面進(jìn)行了描述：（1）腳本注入式的攻擊；（2）惡意用戶輸入用來影響被執(zhí)行的SQL腳本。Stephenkost給出了這種攻擊的另一個(gè)特征—從一個(gè)數(shù)據(jù)庫獲得未經(jīng)授權(quán)的訪問和直接檢索。就本質(zhì)而言，SQL注入攻擊利用的工具是SQL的語法，針對(duì)的是應(yīng)用程序開發(fā)者編程過程中的漏洞。當(dāng)攻擊者能夠操作數(shù)據(jù)，往應(yīng)用程序中插入一些SQL語句時(shí)，SQL注入攻擊就發(fā)生了。3、端到端加密允許數(shù)據(jù)在從源點(diǎn)到終點(diǎn)的傳輸過程中

25、始終以密文形式存在。采用端到端加密(又稱脫線加密或包加密)消息在被傳輸時(shí)到達(dá)終點(diǎn)之前不進(jìn)行解密因?yàn)橄⒃谡麄€(gè)傳輸過程中均受到保護(hù)所以即使有節(jié)點(diǎn)被損壞也不會(huì)使消息泄露。端到端加密系統(tǒng)的價(jià)格便宜些并且與鏈路加密和節(jié)點(diǎn)加密相比更可靠更容易設(shè)計(jì)、實(shí)現(xiàn)和維護(hù)。端到端加密還避免了其它加密系統(tǒng)所固有的同步問題因?yàn)槊總€(gè)報(bào)文包均是被加密的所以一個(gè)報(bào)文包所發(fā)生的傳輸錯(cuò)誤不會(huì)影響后續(xù)的報(bào)文包。此外從用戶對(duì)安全需求的直覺上講端到端加密更自然些。單個(gè)用戶可能會(huì)選

26、用這種加密方法以便不影響網(wǎng)絡(luò)上的其他用戶此方法只需要源和目的節(jié)點(diǎn)是保密的即可。端到端加密系統(tǒng)通常不允許對(duì)消息的目的地址進(jìn)行加密這是因?yàn)槊恳粋€(gè)消息所經(jīng)過的節(jié)點(diǎn)都要用此地址來確定如何傳輸消息。由于這種加密方法不能掩蓋被傳輸消息的源點(diǎn)與終點(diǎn)因此它對(duì)于防止攻擊者分析通信業(yè)務(wù)是脆弱的。4、是只涉及到通信雙方的數(shù)字簽名5、仲裁者對(duì)發(fā)送的簽名進(jìn)行測(cè)試，檢查其來源和內(nèi)容，然后加上時(shí)間戳，并與已被仲裁者通過驗(yàn)證的簽名一起發(fā)送給接收方。仲裁者扮演了裁判的角

27、色。這種簽名的前提是參與者相信仲裁的公平公正。單選題：1：“進(jìn)不來““拿不走““看不懂““改不了““走不脫“是網(wǎng)絡(luò)信息安全建設(shè)的目的。其中，“拿不走“是指下面那種安全服務(wù)（D）A：數(shù)據(jù)加密B：身份認(rèn)證C：數(shù)據(jù)完整性D：訪問控制2：以下有關(guān)代理服務(wù)技術(shù)的描述中，正確的是（D）A：允許內(nèi)外網(wǎng)間IP包直接交互B：從網(wǎng)絡(luò)層次看工作在網(wǎng)絡(luò)層C：通常都是基于硬件實(shí)現(xiàn)的D：與包過濾相比速度要慢些3：關(guān)于防火墻的功能，以下哪一種描述是錯(cuò)誤的？（D）A：

28、防火墻可以檢查進(jìn)出內(nèi)部網(wǎng)的通信量B：防火墻可以使用應(yīng)用網(wǎng)關(guān)技術(shù)在應(yīng)用層上建立協(xié)議過濾和轉(zhuǎn)發(fā)功能livingstardspofarmersinlessthancompleteeliminationof4600Yuan894919008.“Fivewatersrule“:theCountyinvested2.169billionyuansimilarcountieslinethecitysfirstcompletethe42kmofsewa

29、gepipewkconstructioncompletionraterankedfirstinthecitywontheprovincialruralsewagetreatmentwkbetterkeypollutionsourcessuchaselectroplatingpapermakingchemicalindustrymanagementthroughverificationacceptanceofthemunicipalgov

30、ernmenttheCountyremovedBlackodousRiverRiverwastebeginningofriverecologicalrestationeffects.“Threemodifiedasplit“aspects:Countytotaldemolitionillegalareaup2.759millionsquaremeterscompletedCityissuedannualtaskof153%splitag

31、ainstarearankingcitysecondcompleted“threemodified“area4.846millionsquaremeterscompletedCityissuedannualtaskof403%rankingcitythirdwhichvillageintheatargetcompletedtotalcityrankingfirstCountyGovernmentwasnamedcitylevel“thr

32、eemodifiedasplit“wkadvanced.Theseachievementsarehardwonshouldbeappreciated.HoweverwearefullyawarethenewperiodwkinthecountrysidetheenvironmentfacinghigherstardsrequirementsprovincialpartyCommitteeofferedtohighlevelbuildac

33、omprehensivewelloffsocietygoalrequires“nofilthdirtyenvironmentillegalbuildingsintoawelloff“municipalpartyCommitteealsoproposestobuildintothewelloffbenchmarkgoalsofthecity.Comparedwiththesupericlaim“SouthGateofXXbeautiful

34、“goalmyCounty“SanNong“environmentthereareanumberofweaknessesgapshighlightedinthefollowingfiveaspects:firstagricultureremained“l(fā)ow“pattern.“Low“isreflectedinthequalitylowshtvalueaddedoftheindustrychainislow123fusionyieldl

35、owemployeeagelowquality.“Small“isreflectedinsmallerspecializedcooperativesthroughouttheCountytherewere3396butonthescaleoftoolittle.“San“isreflectedinproductionmanagementservicesdecentralizedcentralizedstardizedbrinfmatio

36、nganizationallevelisnothigh.Secondthecountrysideisstillin“dirty“phase.“Dirty“isdirtyofruralsanitationsituationhasnotchanged.“Chaos“isavillageinruralhousingconstructionplanningconstructionofdisdernodrawingsnoconstructionn

37、ovetting“fourno“phenomenonheaplyingthere.“Bad“istheweakruralbasevillagegovernanceispo.Thirdlyfarmerscontinuedtobe“persistent“l(fā)ook.“Old“isagingrurallabfceaccountedf70%overtheageof50.“Big“isthattherefmmeasuresgroundresista

38、ncesuchasthetransactionsofpropertyrightslreplacementpublicservicesupplygapruraleducationhealthcarepensionsotherservicescannotmeetthedemstilldifficultfpovertyalleviationwithemphasisonpovertyalleviation191.“Hard“isa“peasan

39、tspeasants.Fourwatereffectsstilllackscompelling.“Althoughthe“fivewatertreatment“alotwkveryhardbutthefloodofscientificenoughbefethetreatmentwaterqualityimprovementafterthetreatmenteffectisnotobviouscountywidefocusonrivers

40、tilllargelyinferifivewaterswimmingtheRivercouldnotbefound.Fiveis“threetosplit“taskstillliesahead.Noticeofstocktherenewconstructiondidnotreceivetimelytreatmenteveryyear(suchasancestralhallasunauthisedrepeated)contrarytoth

41、ecreatedwkisverydifferentfromtheprovincialmunicipalstards.Meanwhilewhenimplementationisnotinplacegenerallyonlyfocusonillegalconstructiondemolishedfailingthatsplitthatisclearcombineddemolitioninsufficientattentiontorecons

42、tructionofoldresidentialareasurbanvillagesshantytownspromotepo.Tosolvetheseproblemswemustenhancethesenseofresponsibilityurgencyinsistonproblemientedtotakestrongmeasuresefftstomakeupthe“threeagriculture““fivewatertreatmen

43、t““threetosplita“shtBoardconstructionofcomprehensivesafeguards“SouthGateofXXbeautiful“goalofrealizing.IIprecisionShipolicymanpowerplayinggood“threeagricultural“wkprotracted“threeagricultural“wkisdoeconomicsocialdevelopme

44、ntthewkofbasedcountylevelsthesecttoaccdingto“basedagriculturalmanpowerruraldevelopmentfarmers“ofrequirementsinsistedagriculturalruralbasedstatusnotshakeinsistedhuinongkulakpolicynotweakenedinsistedrefminnovationtestnotst

45、opefftscreatednewera“threeagricultural“wknewsituation.(A)tomakeagricultureme.Toestablishtheconceptofagriculturearoundthepeopledemcomprehensivelypromotethesupplysideofagriculturestructuralrefmstrivetoenhancethequalityeffi

46、ciencyofagriculturecompetitiveness.Focusisondoingthefourarticles.Oneisthesteadyincreaseofgrainarticle.Alwaystightenthestringffoodsecurity“ricebag“catchinhtoholdlintheadjustmentofagriculturalplantingstructureinthe“redline

47、.“Acceleratingtheconstructionofgrainribbonsimprovingagriculturalinfrastructureenhancefoodproductioncapacityimprovethequalityofagriculturalproductseffectively“steadyincreaseofgrain“maintain“tongue.“Secondindustryconvergen

48、cearticle.Enhancethelevelofconcentrationintensificationofagriculturecreatingproductionprocessingdistributionsalesserviceinoneoftheagriculturalindustrialchaintobreakdownthevaluechainimproveaddedvalue.Pushingfward“theInter

49、agricultural“modeltoimproveagriculturalproductionmanagementservicelevelinnovatingthemodeofecommercemarketingofagriculturalproductssolvethedifficultproblemofsalesofagriculturalproducts.Agriculturetourismeducationculturehe

50、althpensionotherdeepintegrationdevelopleisuretravelA：選擇由全英文字母組成的口令B：選擇由全數(shù)字組成的口令C：選擇與自己身份相關(guān)的口令，以免忘記D：選擇無規(guī)律的口令21：關(guān)于屏蔽子網(wǎng)防火墻，下列說法錯(cuò)誤的是（D）A：屏蔽子網(wǎng)防火墻是幾種防火墻類型中最安全的B：屏蔽子網(wǎng)防火墻既支持應(yīng)用級(jí)網(wǎng)關(guān)也支持電路級(jí)網(wǎng)關(guān)C：內(nèi)部網(wǎng)對(duì)于Inter來說是不可見的D：內(nèi)部用戶可以不通過DMZ直接訪問Inte

51、r22：在包過濾技術(shù)中，不能作為過濾依據(jù)的是（D）A：源IP地址B：傳輸層協(xié)議C：目的端口D：數(shù)據(jù)內(nèi)容23：以下加密方式中能同時(shí)提供保密性和鑒別性的有（D）A：A用自己私鑰加密報(bào)文傳給BB：A用自己公鑰加密報(bào)文傳給BC：A用B的公鑰加密報(bào)文傳給BD：A用自己私鑰加密報(bào)文再用B的公鑰加密報(bào)文傳給B24：防毒系統(tǒng)在哪個(gè)階段可以獲得病毒入侵報(bào)告(C)A：擴(kuò)散預(yù)防階段B：快速響應(yīng)清除階段C：評(píng)估與恢復(fù)階段D：向領(lǐng)導(dǎo)匯報(bào)階段25：下列措施中，哪項(xiàng)

52、不是減少病毒的傳染和造成的損失的好辦法。（C）A：重要的文件要及時(shí)、定期備份，使備份能反映出系統(tǒng)的最新狀態(tài)B：外來的文件要經(jīng)過病毒檢測(cè)才能使用，不要使用盜版軟件C：不與外界進(jìn)行任何交流，所有軟件都自行開發(fā)D：定期用抗病毒軟件對(duì)系統(tǒng)進(jìn)行查毒、殺毒26：被以下哪種病毒感染后，會(huì)使計(jì)算機(jī)產(chǎn)生下列現(xiàn)象：系統(tǒng)資源被大量占用，有時(shí)會(huì)彈出RPC服務(wù)終止的對(duì)話框，并且系統(tǒng)反復(fù)重啟不能收發(fā)郵件、不能正常復(fù)制文件、無法正常瀏覽網(wǎng)頁，復(fù)制粘貼等操作受到嚴(yán)重影