全國計(jì)算機(jī)等級(jí)考試四級(jí)試題(三)含答案

1應(yīng)位置上,答在試卷上不得分.其中，-,+,·分別為減法、加法和乘法運(yùn)算2命題"并不是所有的火車比所有的汽車快"的符號(hào)表示中哪些是正確3(14)下列關(guān)于二叉樹周游的敘述中，正4(15)在待排序文件已基本有序的前提下，下述排(17)操作系統(tǒng)的設(shè)計(jì)目標(biāo)之一是正確性，下列哪一個(gè)(18)如下表所示，虛擬段頁式存儲(chǔ)(19)在虛擬頁式存儲(chǔ)管理中，所謂最不經(jīng)使用(5(23)在UNIX文件系統(tǒng)中，若在根文件系統(tǒng)的某個(gè)子目錄上掛nice(24)眾所周知，信息是有價(jià)值的，信息的價(jià)值6(25)在數(shù)據(jù)庫技術(shù)中，只描述信息特性(27)要求關(guān)系中的元組在組成主鍵的屬7(29)下面三個(gè)關(guān)系代數(shù)表達(dá)式是等價(jià)的，試判別其保持此鎖直到該事務(wù)結(jié)束。這是保證事務(wù)哪一種特性的重要措8(33)軟件開發(fā)中常采用的結(jié)構(gòu)化生命周期方法，由C.Ⅳ(35)軟件設(shè)計(jì)將涉及軟件的結(jié)構(gòu)、過程和模塊的設(shè)計(jì)，其中軟件(36)軟件需求分析和設(shè)計(jì)過程中，其分析與設(shè)計(jì)對(duì)象可歸結(jié)成9(37)結(jié)構(gòu)化分析(SA)方法將欲開發(fā)的軟件系統(tǒng)分解為若干基本(38)軟件開發(fā)的瀑布模型，一般都將開發(fā)過程劃分為：分析(40)實(shí)施軟件開發(fā)的原型化方法應(yīng)具備某些必要的條件，下述(49)在相聯(lián)處理機(jī)的特點(diǎn)中，下述哪種說法是不正確(50)我國研制的銀河Ⅲ型超級(jí)計(jì)算機(jī)通過基準(zhǔn)程序(51)在PSK調(diào)制方式中，如果一種modem的調(diào)制速率為9600bau(52)誤碼率是描述數(shù)據(jù)通信系統(tǒng)質(zhì)量的重要參數(shù)之一.對(duì)誤碼(54)XMODEM與Kermit協(xié)議共同之處是從站能否立即向主站發(fā)送這個(gè)數(shù)據(jù)幀?如果可以立即發(fā)送的話，那(56)典型的局域網(wǎng)操作系統(tǒng)的系統(tǒng)容錯(cuò)(SFT)分為三級(jí)棄.(61)Whatisthedecimalvalueofthefollowing32-bittwo’scomplementnumber?(62)Howmanysubsetselyadditionandmultiplication.Letf﹕R→RandfA．fisasurjectivehomomorphismfB．fisaninjectivehomomorphism(64)P(n)isthepredicate’if4dividesnthenofP(12)?(65)AnalgorithmtosolveagivenproblemhasGiventhatthealgorithmgshouldittakeforap(66)WhatisthedefinitiA．Asequenceofverticesandtheedgesformedbyeachsuccessivepairofve(67)Thefigurebelowshowsarecordusedforevent.Whichofthefollowingstatementisincorrect?(2Points)event﹕array[1..10]ofchar;place﹕array[1..20]ofrecordplname﹕array[1..15]ofchar;date﹕array[1..5]ofrecordyear﹕integerA．Thisisaone-dimensionalarrayofrecordsD．Areferencetor.place[i].date[j].mowillaccessthemonthofttheithplace，oftheeventnamedin(68)Whichofthefollowingstatementsistrueregardingsebestperformanceforlargeelem(69)WhichUNIXcommandcreatesasymctorytothefile/etc(70)WhichMS-DOScommandisco(71)Avirtualmemorysystemhasfivevirtualpagesnumberedzerothr threepageframes.AllthepageframesareinitiallyneratedwiththefollowingaccesssequenceusingaFIFOreplacement(72)WhichelementisNOTpartofamicrokernel?((73)WhichislocaltoathreadinsteadofaproceD．a(chǎn)selectstatementientwillhave6treatmentsduringahospitays.Thehospitalhas1000beds.Therearhday.TherelationshipbetweenPATIENTandTREATMENTisl:M.TheredassoonasapatientisdischarEATMENTrecordswillbestoredinthe(76)WhichofthefollowingconditionswillmakearelationthrmtobeinsecondnⅢ.theprimarykeyconsistsofonlyoneattrA.ⅠonlyC.ⅠandⅢonly(77)Themostcommonlyusedlockinglevelintwhichofthefollowinglevels?(78)WhichfunctionisNOTservedbybuildingaproA．IttakestheplaceC．ItassistsinestimD．Itisusedasthefoundationofthe(79)Softwaredocumentisanimportantpartofsoftwareelopmentphase.Italsoinfluncessoftware(80)Whichphaseofthesoftwaredevelopmentrequiresthemostdevelopmenttime?(81)Whichofthefollowingstatementsiscorrect?(2A．ThedefinitionphaseresultsinC．CASEtoolscanD．Achangeduringalaterphasedoesnothasestobeupdated.(82)Black-boxandwhite-boxtestingmethodareoftenusedinsof(83)HowdoesBooth’sAlgorithmimprovebinarymultC．ItpreservesthesignofthemultiplicatiD．Itenhancesthespeedofthe(84)Acachehas64(85)WhichisNOTacharacteristicofanRISCproc(86)Youareperformingtwosums:thefirst secondisamatrixsumofapeedupisachievedwhenthecalculationss)(87)AccordingtoShannon’sequation，whice-gradephonelinewithabandwidthof3100HzandaPoints)(88)TheX﹒25standardspecifiesthreelayersoffunctionality.WhichlayersoftheOSImodelcorrespondtotheX﹒2(89)WhichroutingalgorithmisdescribedItisamechanisminwhichthesetdingstatllowandincludestheroutinginformationwiththeframe;bridgesreadthetiontodetermineiftheyshouldforwardtheframe.(90)WhichOSIl.二、論述題（兩個(gè)論述題可任選其一，并只選其一，多選無效，在計(jì)算機(jī)指令集的設(shè)計(jì)與實(shí)現(xiàn)過程中，出現(xiàn)了兩種對(duì)立的技術(shù)路線(3)IntelX86系列屬于哪一種風(fēng)格，當(dāng)前它采用的是怎樣的人們?cè)诠芾韺?shí)踐中發(fā)現(xiàn)，數(shù)據(jù)庫技術(shù)是信息資源的整系型數(shù)據(jù)庫和面向?qū)ο笮蛿?shù)據(jù)庫，各種類似的數(shù)據(jù)模型都有？（(2)在許多含有復(fù)雜數(shù)據(jù)結(jié)構(gòu)或豐富語義的實(shí)際應(yīng)用領(lǐng)域中，？（