大工20秋《专业英语(计算机英语)》在线作业2答案

大工16秋《专业英语(计算机英语)》在线测试2满分答案1.全双工信道允许双向同时通信，实际上由两个单工信道组成，一个正向信道和一个反向信道，连接着相同的点。

正确答案：B2.这是在网络上传输HTML文件的协议。

正确答案：A3.实用程序程序，也称为服务程序，执行与管理计算机资源相关的特定任务。

正确答案：A4.特定信道或系统中传输的最低和最高频率之间的差异。

正确答案：B5.在网络中由多个用户共享的计算机。

正确答案：B11.A modem。

XXX。

XXX (n) to send over phone lines。

A receiving modem then converts the analog signal back to a digital signal (n).12.A packet is a fixed-maximum-length block of data for XXX.13.The user interface controls how you enter data or ns and how n is displayed on the computer screen.14.XXX both like and unlike LANs。

and XXX.15.Ring ork is a type of local area ork (LAN) where all XXX loop and messages are passed around the ring until they XXX orks。

there is no central server.XXX with each other。

It allows for the transfer of data een XXX.17.In a star ork。

all XXX to a central hub。

such as a file server or host computer。

计算机专业英语作业答案（供参考）计算机专业英语作业1第1－3章作业一．Vocabulary( 词汇)(一)．Translate the following words and expressions into Chinese(写出下列词组的汉语。

) 1．central processing unit（CPU）中央处理器 2.title bar 标题栏3．operating system 操作系统4．personal computer 个人计算机5．menu bar 菜单栏6．desk publishing 桌面排版7．electronic spreadsheet 电子表格8．hard disk 硬盘9．database 数据库10．Cursor 光标(二)．Fill in the blanks with the corresponding English abbreviations.(根据汉语写出相应的英语缩写。

)1．随机存储器RAM 2．只读存储器ROM3．传输控制协议TC P 4．数字视频光盘DVD5．通用串行总线USB 6．计算机辅助设计CAD7．计算机辅助制造CAM 8．中央处理器CPU(三)．Translate the following Chinese into English.(根据汉语写出相应的英语。

)1．键盘keybord 2．鼠标mouse 3．扫描仪scanner4．打印机printer 5．输入input 6．输出output7．显示器monitor 8．存储器storage 9．数据库database 10．操作系统operating system 11．应用软件application software 12．字处理器word processor 13．网络浏览器web browser二．Tell whether the following statements are true(T) or false(F).(判断正误。

业>>单选题1.to make2.be made3.making4.made1.unless2.if3.since4.as long as1.have I realized2.I have realized3.did I realize4.I realized1.relaxing2.relax3.relaxed4.to relax1.shall learn2.should learn3.learn4.learned1.look at2.look up3.look for4.look around1.leave2.left3.has left4.shall leave1.show2.showed3.shall show4.shown1.which2.what3.why4.that1.sequence2.time3.form4.shape1.seeing2.see3.be seeing4.have seen题1.which2.who3.that4.what1.led2.had3.got4.gave1.In many instances2.In much instance3.For many instances4.For much instance1.serious2.silent3.simple4.slight1.that2.which3.who4.what1.which chair should he take2.which chair he should take3.which chair he take4.which chair he took1.where2.when3.which4.that1.be obeyed2.is obeyed3.shall be obeyed4.obeyed1.extend2.explore3.express4.exercise1.would be injured2.will have been injured3.will be injured4.would have been injured1.could2.should3.would4.might1.surf2.to surf3.surfing4.surfed1.No sooner had I2.No sooner I had3.No sooner have I4.No sooner I have1.seeing2.see3.be seeing4.have seen1.write2.wrote3.writing4.written1.on which2.on that3.in which4.on whom1.unless2.as if3.when4.in order that1.look at2.look up3.look for4.look around1.where might be her son2.which might be her son3.where her son might be4.which her son might be1.where2.when3.which4.that1.warned2.warn3.warning4.having warned2：It is high time that you _____ English and computer well.1.shall learn2.should learn3.learn4.learned3：He asked me _______ after graduation?1.what did I intend to do2.what I intended to do3.what did I intend to4.what I intended to4：There have been complaints about the noise from the people ___ live in the flats.1.which2.whom3.whose4.who5：I used to ____ poems when I was his age.1.write2.wrote3.writing4.written6：They tried to think of a plan ____ they could fulfill their task ahead of time.1.by that2.by which3.in that4.in which7：He told me that I______be present at the ceremony.1.could2.should3.would4.might8：I spent all my spare time surfing the Internet. I am absolutely keen ___ it.1.on2.at3.in4.to9：Little______that they had made a great discovery in chemistry.1.they realized2.had they realized3.did they realize4.they had realized10：I can never forget the day ____ I got the first prize in the competition.1.that2.where3.which4.when11：If they were here tomorrow, the problem _____.1.would be solved2.would have been solved3.will be solved4.will have been solved12：If I were you, I ____ the job.1.accept2.accepted3.will accept4.would accept13：In Ireland, as in the rest of Europe, dates are usually written in the _____of day, month, and year.1.sequence2.time3.form4.shape14：The criminal didn’t realize the value of freedom______he had lost it.1.if2.as3.while4.until15：I spent all my spare time ___ the Internet.1.surf2.to surf3.surfing4.surfed16：There are two reasons ____ I do not want to go out tonight.1.why2.because3.so4.that17：The book was different______a ll the other books I’ve ever read.1.from2.to3.on4.among18：He is writing to______his appreciation of the hospitality you showed to him.1.extend2.explore3.express4.exercise19：______got home than it began to rain.1.No sooner had I2.No sooner I had3.No sooner have I4.No sooner I have20：The question______yesterday is of great importance.1.discussing2.discussed3.being discussed4.to be discussed1：Tell the taxi driver _______.1.where do you want to go2.where you want to go3.where do you want to4.you want to go2：Linda and Cheryle come from families which are______rich nor poor.1.both2.either3.neither4.as3：It seems ages since we ___ you.1.heard from2.heard about3.heard of4.heard4：I used to ____ poems when I was his age.1.write3.writing4.written5：I spent all my spare time surfing the Internet. I am absolutely keen ___ it.1.on2.at3.in4.to6：Why does Tom want to leave the______job?1.present2.private3.public4.powerful7：The question______yesterday is of great importance.1.discussing2.discussed3.being discussed4.to be discussed8：Here is a notice______people not to litter the beach.2.warn3.warning4.having warned9：It is high time that you _____ English and computer well.1.shall learn2.should learn3.learn4.learned10：We wish that people everywhere ____ more concern for the environment around them.1.show2.showed3.shall show4.shown11：The children were______to see the performance.1.keen2.anxious3.eager4.sharp12：While_______in the factory, the students learnt a lot from the workers.1.working2.worked3.is working4.having worked13：______, parents must set a good example for their children.1.Generally2.Obviously3.Fortunately4.Unnecessarily14：Let’s______ and see if we can find something particular.1.look at2.look up3.look for4.look around15：They were playing in the garden______they heard a scream.1.what2.when3.where4.so that16：Luckily I was wearing a seat belt. If I hadn’t been wearing one, I ____ seriously.1.would be injured2.will have been injured3.will be injured4.would have been injured17：Things turned ____ to be exactly as the professor had foreseen1.up2.off3.down4.out18：Mr. Black is looking forward to______his Chinese partner soon.1.seeing2.see3.be seeing4.have seen19：He said ______.1.how the garden was beautiful2.how beautiful the garden was3.how beautiful was the garden4.the garden was how beautiful20：She wanted to know ___.1.what is his job2.what was his job3.what his job is4.what his job was1：He told me that I______be present at the ceremony.1.could2.should3.would4.might2：______you like to know something about Chinese acrobatics?1.Could2.Would3.Can4.Will3：The old couple ____ live next to us have four grandchildren.1.who2.which3.whom4.whose4：While_______in the factory, the students learnt a lot from the workers.1.working2.worked3.is working4.having worked5：The police do not allow him to go out of the city without ____.1.permit2.permission3.admit4.admission6：Her doctor insists that she ______ any longer.1.does not smoke2.will not smoke3.should not smoke4.has not smoked7：The book is______more difficult than the one I recommended toyou.1.rather2.much3.very4.so8：The garden of his house has a lawn, ___ is very pleasant to sit on in summer.1.where2.when3.which4.that9：Modern business and industry demand that every manager ___ much about economic management.1.know2.knew3.shall know4.known10：This coat______ me one hundred and sixty yuan.1.spend2.cost3.take4.pay11：The audience, most of ____ were students, enjoyed the performance very much.1.whom2.who3.which4.that12：Luckily I was wearing a seat belt. If I hadn’t been wearing one, I ____ seriously.1.would be injured2.will have been injured3.will be injured4.would have been injured13：The father was pleased to hear the child______that.1.to say2.to have said3.said4.say14：You will be full of confidence during the interview______youare well prepared.1.unless2.if3.since4.as long as15：The children were______to see the performance.1.keen2.anxious3.eager4.sharp16：_____ it is the inviter who pays the bill.1.In many instances2.In much instance3.For many instances4.For much instance17：He talked cheerfully about the film and the actress ___ interested him.1.who2.which3.that4.what18：He talked as if he______everything.1.knows2.knew3.have known4.had known19：______got home than it began to rain.1.No sooner had I2.No sooner I had3.No sooner have I4.No sooner I have20：She wanted to know ___.1.what is his job2.what was his job3.what his job is4.what his job was20：?Li Ming takes an active part in social work.1.So does each of us2.So each of us does3.So is each of us4.So has each of us窗体底端1：The old couple ____ live next to us have four grandchildren.1.who2.which3.whom4.whose2：The meeting must be important because the CEO says no one is allowed to be ______1.present2.appear3.absent4.attend3：Things turned ____ to be exactly as the professor had foreseen1.up2.off3.down4.out4：He is writing to______his appreciation of the hospitalityyou showed to him.1.extend2.explore3.express4.exercise5：I want to______the position advertised by ABC Company.1.apply in2.apply on3.apply4.apply for6：I would rather that Mr. Mike ____ the speech at the conference instead of the dean that day.1.make2.made3.has made4.had made7：______you like to know something about Chinese acrobatics?1.Could2.Would3.Can4.Will8：The father was pleased to hear the child______that.1.to say2.to have said3.said4.say9：When not on stage, he spends time______at home.1.relaxing2.relax3.relaxed4.to relax10：He asked ____.1.which chair should he take2.which chair he should take3.which chair he take4.which chair he took11：?Li Ming takes an active part in social work.1.So does each of us2.So each of us does3.So is each of us4.So has each of us12：This coat______ me one hundred and sixty yuan.1.spend2.cost3.take4.pay13：The criminal didn’t realize the value of freedom______he had lost it.1.if2.as3.while4.until14：It is advisable that she ____ for Madrid as soon as possible.1.leave2.left3.has left4.shall leave15：The child ____ parents died in the air crash is living with his aunt now.1.who2.whose3.whom4.which16：In the armchair______,reading a novel.1.his mother sat2.did his mother sit3.does his mother sit4.sat his mother17：Why does Tom want to leave the______job?1.present2.private3.public4.powerful18：He talked as if he______everything.1.knows2.knew3.have known4.had known19：They were playing in the garden______they heard a scream.1.what2.when3.where4.so that20：The invitation ___ to be something you’d hate to do.1.turns in2.turns on3.turns off4.turns out1.know2.knew3.shall know4.known1.serious2.silent3.simple4.slight1.turns in2.turns on3.turns off4.turns out1.rather2.much3.very4.so1.would be injured2.will have been injured3.will be injured4.would have been injured1.write2.wrote3.writing4.written1.even if2.so that3.in case4.as if1.on which2.on that3.in which4.on whom1.whom2.who3.which4.that1.which2.when3.that4.as1.how the garden was beautiful2.how beautiful the garden was3.how beautiful was the garden4.the garden was how beautiful1.why2.because3.so4.that1.make2.made3.has made4.had made1.apply in2.apply on3.apply4.apply for1.make2.to make3.making4.made1.present2.private3.public4.powerful1.both2.either3.neither4.as1.with2.of3.for4.to1.discussing2.discussed3.being discussed4.to be discussedmit2.conform3.admit4.adapt1.know2.knew3.shall know4.known2：The doctor came out of the patient’s room with a______look on his face.1.serious2.silent3.simple4.slight3：The invitation ___ to be something you’d hate to do.1.turns in2.turns on3.turns off4.turns out4：The book is______more difficult than the one I recommended to you.1.rather2.much3.very4.so5：Luckily I was wearing a seat belt. If I hadn’t been wearing one, I ____ seriously.1.would be injured2.will have been injured3.will be injured4.would have been injured6：I used to ____ poems when I was his age.1.write2.wrote3.writing4.written7：We moved to London______we could visit our friends more often.1.even if2.so that3.in case4.as if8：That is the player _____ we all rely.1.on which2.on that3.in which4.on whom9：The audience, most of ____ were students, enjoyed the performance very much.1.whom2.who3.which4.that10：It was in that small village______our president was born.1.which2.when3.that4.as11：He said ______.1.how the garden was beautiful2.how beautiful the garden was3.how beautiful was the garden4.the garden was how beautiful12：There are two reasons ____ I do not want to go out tonight.1.why2.because3.so4.that13：I would rather that Mr. Mike ____ the speech at the conference instead of the dean that day.1.make2.made3.has made4.had made15：You’d be tter______the buffet supper sumptuous.1.make2.to make3.making4.made16：Why does Tom want to leave the______job?1.present2.private3.public4.powerful17：Linda and Cheryle come from families which are______rich nor poor.1.both2.either3.neither4.as18：The Greeks believed that individuals must beresponsible______their own actions.1.with2.of3.for4.to19：The question______yesterday is of great importance.1.discussing2.discussed3.being discussed4.to be discussed20：If you want to be an actor you have to really _____ yourself to it.mit2.conform3.admit4.adapt11：ABC Company______a person for full-time sales in the clothing department.1.inquire2.require3.ask4.charge1：______by these success, they decided to expand the business.1.Encouraging2.Encouraged3.Having encouraged4.Being encouraging9：He asks ___3_ .1.when will they leave2.when they leave3.when they will leave4.they when will leave19：In the armchair______,reading a novel.1.his mother sat2.did his mother sit3.does his mother sit4.sat his mother。

地大《计算机安全》在线作业二
试卷总分:100 得分:100
一、单选题 (共 10 道试题,共 30 分)
1.分组密码工作模式中,()模式是相同的明文生成相同的密文.
A.电子密码本模式
B.分组密码链接模式
C.密码反馈模式
D.计数器模式
答案:A
2.虚拟专用网(VPN)技术是指().
A.在公共网络中建立专用网络,数据通过安全的“加密管道”在公共网络中传播
B.在公共网络中建立专用网络,数据通过安全的“加密管道”在私有网络中传播
C.防止一切用户进入的硬件
D.处理出入主机的邮件的服务器
答案:A
3.TEMPEST技术的主要目的是()。

A.减少计算机中信息的外泄
B.保护计算机网络设备
C.保护计算机信息系统免雷击和静电的危害
D.防盗和防毁
答案:A
4.访问控制的目的是().
A.对用户进行认证
B.对用户进行授权
C.保护计算机资源不被非法使用和访问
D.防止假冒攻击
答案:C
5.关于VPN的概念,下面哪种说法是正确的().
A.VPN是局域网之内的安全通道
B.VPN是在互联网内建立的一条真实的点—点的线路
C.VPN是在互联网内建立的虚拟的安全隧道
D.VPN与防火墙的作用相同
答案:C
6.下面入侵检测技术当中,()是基于模式匹配技术的.
A.异常检测
B.误用检测
C.基于统计的检测
D.基于数据挖掘的检测
答案:B。