网络复习资料2
东北财经大学《大学英语2》网考复习资料
【1】 It’s time ______ the fashion show.A、 to watchB、 watchC、 seeD、 to see答案:A【2】 He had some statues in his study. One was a lady ______ nothing but a bath towel.A、 wearingB、 wearsC、 woreD、 to wear答案:A【3】 Son (in the kitchen) : Shall I turn on the burner?Mother : ______________. I haven’t finished peeling the potatoes.A、 No, not stillB、 No, not yetC、 No, not alreadyD、 No, not just答案:B【4】 Many of our most deeply ______ opinions are held simply as a result of the fact that we happen to have been “brought up” to them.A、 rootingB、 rootsC、 rootedD、 root答案:C【5】 I hear that you are ______ collecting stamps. Could I have a look?A、 pleased withB、 similar toC、 interested inD、 ready for答案:C【6】 Martin and Mary ______ their baskets of seeds on a fence outside the village.A、 restedB、 tookC、 threwD、 stole答案:A【7】 Today we know more about ______. We’re better at preventing illness.A、 medicineB、 pollutionC、 environmentD、 population答案:A【8】 Molly : Charles, would you like to go to a party this Saturday? Charles : ___________.What kind of party?Molly : It’s a birthday party.A、 Seems all rightB、 Looks niceC、 Sounds goodD、 Feels excellent答案:C【9】 Printing ______ greatly at the beginning of the 11th century.A、 was developedB、 is developedC、 will be developedD、 has been developed答案:A【10】 My father took the photos ______ we lived in Cambridge.A、 thoughB、 sinceC、 untilD、 when答案:D【11】 The young man ______ teaches us English is from America.A、 whoB、 whichC、 whomD、 whose答案:A【12】– How are you getting on there?– Don’t worry. ______ goes well.A、 SomethingB、 EverythingC、 AnythingD、 Nothing答案:B【13】 My grandma thinks people don’t eat as ______ as in the past.A、 wellB、 betterC、 bestD、 the best答案:A【14】 I made a big cake ______ chocolate and grapes.A、 toB、 fromC、 withD、 on答案:C【15】 They asked to find out the real ______ of the machine.A、 inventB、 inventingC、 inventorD、 invention答案:C【16】 Mum, I can’t eat any more. I ’m ______ already.A、 thirstyB、 stillC、 starvingD、 full答案:D【17】 Woman : Thank you very much for your help.Man : ________.A、 Never mindB、 It doesn’t matterC、 Not at allD、 No thanks答案:C【18】 The sign “No Smoking” means “You ______ smoke here. ”A、 can’tB、 needn’tC、 mustn’tD、 won’t答案:C【19】 Mr. Smith : I ’d like a double room for tonight.Clerk : _________________________Mr. Smith : Yes. I called you last week from New York. My name is George Smiths.A、 Do you have a reservation?B、 Have you paid beforehand?C、 Have you made an order?D、 Do you have an appointment?答案:A【20】 Ben : Mommy, when will we have dinner? I ’m starving.Mother : _______.We have to wait for daddy.A、 O.K., honeyB、 Quickly, honeyC、 Soon, honeyD、 All right, honey答案:C【21】 Don’t drink the soup. It smells ______.A、 wonderfulB、 terribleC、 niceD、 delicious答案:B【22】 Political and religious systems, ______ customs, they all came tumbling down like so many rotten apples off a tree.A、 socialB、 societyC、 sociableD、 socialize答案:A【23】 Lodger : I ’m terribly sorry that I broke your precious vase. I ’ll pay for it.Landlady :____.A、 Can’t complainB、 Take careC、 Relax yourselfD、 Never mind答案:D【24】 I suggest ______ in English in class.A、 talkB、 to talkC、 talkingD、 talks答案:C【25】 My aunt goes for this year’s ______. Light blue is her favorite.A、 logosB、 stylesC、 advertisementsD、 colors答案:D【26】– Dou you ______ feel lonely?– Yes, sometimes.A、 justB、 everC、 neverD、 even答案:B【27】 They paid no ______ to him.A、 needB、 leadC、 heedD、 kneed答案:C【28】 I can’t wait ______ the pop singer.A、 meetB、 to meetC、 meetingD、 met答案:B【29】 Taxi driver : Here you are, sir. Queens Hotel.Passenger : How much is it?Taxi driver : Three dollars and seventy-five cents.Passenger : Here is four dollars. _____________.A、 Don’t give me the restB、 It’s not necessary to give me the coinsC、 I give up the pocket moneyD、 Keep the change答案:D【30】 Molly : Charles, would you like to go to a party this Saturday? Charles : ___________.What kind of party?Molly : It’s a birthday party.A、 Seems all rightB、 Looks niceC、 Sounds goodD、 Feels excellent答案:C【31】–– Zhao (guest) : That was a delicious dinner.–– Mr. Murray (host) :____. Would you like to go to the living room now? It’s more comfortable there.A、 I'm glad you enjoyed itB、 Thank you. Don’t mention itC、 You're welcomeD、 Not so delicious, I'm afraid答案:A【32】 Mr. Smith : I ’d like a double room for tonight.Clerk : _________________________Mr. Smith : Yes. I called you last week from New York. My name is George Smiths.A、 Do you have a reservation?B、 Have you paid beforehand?C、 Have you made an order?D、 Do you have an appointment?答案:A【33】 Lodger : I ’m terribly sorry that I broke your precious vase. I ’ll pay for it.Landlady :____.A、 Can’t complainB、 Take careC、 Relax yourselfD、 Never mind答案:D【34】–– Adam : Mmm… This is the best pudding I ’ve ever had ! –– Celia : ______I know you’d like it.A、 Didn’t I tell you?B、 Did I say it right?C、 Is what I said right?D、 What did I say?答案:D【35】 Carl : I ’d like a haircut, please.Barber : Would you care for a shave and a shampoo as well?Carl : _____________________ A haircut will be just fine.A、 No, thanks.B、 Yes, please.C、 It’s very kind of you.D、 I’m glad you can think of it.答案:A【36】–– Host : Jack, come and sit in the sofa. Dinner will be ready in a minute. Could I get you something to drink?–– Guest : ____.A、 No, don’t trouble. I’ve drunk enoughB、 No, you couldn't. I'm not thirstyC、 Yes, you could. I’d like some Coca colaD、 Yes, please. I'd like some Sprite答案:D【37】–– James : Hi, Harry. ____–– Harry : Hi, James. I just bought a new camping tent. I can’t wait to use it.A、 What’s up?B、 What’s on?C、 What’s wrong?D、 What’s right?答案:A【38】–– Thomas : Hey, you look concerned.______–– Jack : The final exam. I ’m not fully prepared yet.A、 What a lovely day!B、 What has attracted you?C、 What’s on your mind?D、 What about seeing the doctor?答案:C【39】 Hairdresser : How would you like to do your hair today? The same style as usual?Mrs. Lincoln : I have a special party to attend tonight, and I ’d like to change styles.Hairdresser : Very well. You’re not in a hurry, are you?Mrs. Lincoln : No. ________________.A、 Be relaxedB、 Take it easyC、 Take your timeD、 Don’t worry答案:C【40】 Woman : Thank you very much for your help.Man : ________.A、 Never mindB、 It doesn’t matterC、 Not at allD、 No thanks答案:C【41】 Taxi driver : Here you are, sir. Queens Hotel.Passenger : How much is it?Taxi driver : Three dollars and seventy-five cents.Passenger : Here is four dollars. _____________.A、 Don’t give me the restB、 It’s not necessary to give me the coinsC、 I give up the pocket moneyD、 Keep the change答案:D【42】 Ben : Mommy, when will we have dinner? I ’m starving. Mother : _______.We have to wait for daddy.A、 O.K., honeyB、 Quickly, honeyC、 Soon, honeyD、 All right, honey答案:C【43】 Son (in the kitchen) : Shall I turn on the burner?Mother : ______________. I haven’t finished peeling the potatoes.A、 No, not stillB、 No, not yetC、 No, not alreadyD、 No, not just答案:B【44】 Customer : Excuse me, sir.Clerk : _____________________Customer : I ’d like to cash a check. Would you please tell me which window should I go to?Clerk : You can cash checks over there at window 6.A、 What? Can I help you?B、 It’s all right.C、 Yes, may I help you?D、 It doesn’t matter.答案:C【45】 May be you have seen this in schools : some students are studying nearly all the time but they just pass their exams, while some others may spend much less time on their books but do much better in exams. How could this happen? People used to think that hard work is the only way to success. But now they have understood that smart work can make them succeed too.Hard workers don’t mind working for long hours, while smart workers always think of several different answers to these questions, such as “Why should I suffer this?” or “ Isn’t there a better way to do this?”Thanks to these people, we can use computers instead of the abacus now. progress in every field is the direct result of “trying to find a better way” by smart workers.There was a large soap factory in Japan. Once it received an unusual letter from someone who complained that there was no soap in the soap in the soapbox he bought.How could empty soapboxes go out of the factory? The engineers checked the producing and packing. The producing was fine, but in about ten thousand soapboxes, the packing machine let an empty soapbox go. There was no need to spend a lot of money repairing the machine for such a small problem. The engineer soon worked out a solution. He put a huge X-ray machine and two large computers to find out the empty soapboxes. After teaching the workers how to use it, he sat down in his seat, exhausted. “Sir, we could have solved the problem in a much simpler and cheaper way, ” a worker said.“Really? How?”“We can put a huge fan near the packing machine. The wind coming from the fan will blow away the empty boxes, leaving the other boxes with soap. ”See, this is smart work. In order to succeed, we should not only work hard like the engineer, but also think smart like this worker.Some students spend less time on school work but do better in exams because they study longer.A、 TB、 F答案:BThe passage mainly tells us we should work hard like the engineer and think smart like the worker.A、 TB、 F答案:AThe soap factory could only put a huge fan near the packing machine to solve problem in a much simpler and cheaper way.A、 TB、 F答案:AThe underlined phrase “blow away” means “停止” in Chinese.A、 TB、 F答案:BSomeone wrote to the soap factory and complained that the soapbox he bought was terrible.A、 TB、 F答案:A【46】 The English language started about 1,500 years ago in England. Three groups of people came to the country. They were the Angles, the Saxons, and the Jutes. These three groups brought their languages with them to the country.After some time, the three languages became one new language —English. The name “English” comes from the Angles. They lived in most of England. The language that we speak today—Modern English is not the same as the English that people used 1,500 years ago, including Old English (before 1150) and Middle English (up till 1500). That language—Old English sounds different, and it has some different rules of grammar. There were only a few thousand words in Old English. But Modern English does come from Old English, and it is still like it in many important ways. When did Modern English start?A、 About the year 1150.B、 Between the 12th century and the 16th century.C、 About the year 1500.D、 Before the year 1500.答案:CHow many languages did Old English come from?A、 One.B、 Two.C、 Three.D、 Four.答案:CWhich language did the name “English” come from?A、 The Saxons.B、 The Jutes.C、 The Angles.D、 Modern English.答案:CAccording to the passage, Modern English is different from Old English in____.A、 grammarB、 pronunciationC、 wordsD、 all the above答案:DWhich of the following is TRUE?A、 Modern English has nothing to do with Old English.B、 Modern English has more words than Old English.C、 Modern English has fewer words than Old English.D、 There is no difference between Old English and Modern English.答案:B【47】 Camp Broadway is a children’s camp in the United States. It gives children a chance to find out about the performing arts. These include drama, dancing and singing. If you are 10 to 17 and enjoy performing, this could be of interest to you. It lasts 5 days and our professional artists are going to help you develop your talent or discover one.It lets you develop your ability to create and increase your confidence. Even if you don’t think you have performing talents, these will be useful skills to have. Whatever your future job might be, it will help youto speak more confidently, clearly and effectively in public. This will give you the best results if you need to speak or introduce anything to a group of people.You also have a chance to make new friends here. And our artists will answer your questions and give you first-hand advice. This will be of great help if you want to progress. At the end, you have a chance to show your family what you have achieved.The program isn’t just open to beginners, but also t those who have some experience.If you are interested in this summer camp, then visit.1. A 15-year-old high school student will probably join in the camp.A、 TB、 F答案:A2. In this passage, the underlined word “confidence” means “想象力” in Chinese.A、 TB、 F答案:B3. The second paragraph of the passage tells us why Camp Broadway is helpful.A、 TB、 F答案:A4. In the camp, you have a chance to learn how to help your friends with their lessons.A、 TB、 F答案:B5. The program is only open to those who have some experience.A、 TB、 F答案:B【48】 Mr. Smith is telling two funny stories of his police work. Story AI remember catching a “thief” in a clothes shop once. It was strange. The man was hiding a yellow sweater inside his coat. I thought he had stolen it, so I caught him. We found later that his wife gave him the sweater for his birthday, but he hated it. He just wanted to turn it to the shop for money, but he didn’t want his wife to see him! We soon let him go.Story BAnother day, a man called Bob went into a bank on Sixth Street. He wrote on the back of an envelope, “Give me the money ! Or I ’ll kill you. ” and gave it to the bank clerk. She gave him $100,000 and the man ran away. Then we received a phone call from the bank clerk. She told us to go to the man’s house in Candy Town and get him. We caught him as soon as he got out of the elevator. He couldn’t believe that we found him so quickly. We told him that the front of the envelope he used had his name and address on it !( 1 ) What does Mr. Smith do?A、 A bank clerk.B、 A policeman.C、 A thief.D、 A taxi driver.答案:BMr. Smith caught the man in the clothes shop____.A、 by exchangeB、 by mistakeC、 by accidentD、 on purpose答案:BWhy did the man return the sweater to the shop?A、 Because he didn’t want his wife to see it.B、 Because he liked money more than the sweater.C、 Because he hated it and wanted to get the money back.D、 Because he wanted to buy a new sweater.答案:CBob was caught so quickly because____.A、 his address was found on the envelope he usedB、 he received a phone call from the bank clerkC、 the police waited for him outside the elevatorD、 he used the money to buy a lot of things答案:AWhat do you think of Bob?A、 He is brave.B、 He is careful.C、 He is shy.D、 He is stupid.答案:D【49】 One day Bob took two of his friends into the mountains. They put up their tents and then rode off to a forest to see how the trees were growing.In the afternoon when they were about ten kilometers from their camp, it started to snow. More and more snow fell. Soon Bob could hardly see his hands before his face. He could not find the road. Bob knew there were two roads. One road went to the camp, and the other went to his house. But all was whitesnow. Everything was the same. How could he take his friends back to the camp?Bob had an idea. The horses ! Let the horses take them back ! But what would happen if the horses took the road to his house? That would be a trip of thirty-five kilometers in such cold weather !It was getting late. They rode o and on. At last the horses stopped. Where were they? None of themcould tell. John looked around. What was that under the tree? It was one of their tents !1. John and his two friends went to the forest to watch the trees in the forest.A、 TB、 F答案:A2. They could not find their way back because there was only one road to their camp.A、 TB、 F答案:B3. It is clear that they wanted the horses to take them to the camp.A、 TB、 F答案:A4. The horses stopped because they were tired after running for a long way.A、 TB、 F答案:B5. The story happened at night when nothing could be seen.A、 TB、 F答案:B【50】 There are millions of stars and planets in space. What’s the difference between stars and planets? Stars can give out heat and light, but planets cannot. The sun is one of the stars. Some planets are balls of rock and some are balls of gas. We live on the earth. The earth spins around once everyday to give us day and night. The earth goes around the sun once every year to give us different seasons.There are eight planets moving around the sun. We call the family of the sun and its planets the solar system. Mercury is the nearest to the sun, so it is very hot. It is the smallest planet. Venus is very bright and hot. It is the nearest to the earth. Mars is covered with orange-red dust and rocks, so it looks like a red star in the sky. It has seasons like the earth does. Jupiter has at least 63 moons (卫星) and it is the biggest and heaviest planet of them. Saturn has at least 62 moons. The other planets, such as Uranus and Neptune, are all very far from the sun and very cold. We need a telescope to see them.1. The sun can give us____ .A、 heat and waterB、 heat and lightC、 light and airD、 rock and water答案:B2. The Chinese meaning of the underlined phrase “spins around” is____.A、飞行B、行驶C、旋转D、公转答案:C3. The earth goes around____once every year to give us different seasons.A、 the moonB、 MarsC、 JupiterD、 the sun答案:D4. Mars looks red in the sky because____.A、 it is covered with orange-red dust and rocksB、 it has seasons like the earth doesC、 it is the nearest to the earthD、 it is covered with read water and dust答案:A5. Which is NOT true according to the passage?A、 Jupiter is the biggest and heaviest planet.B、 Uranus is very far from the sun and very cold.C、 The rotation of the earth gives us day and night.D、 We call the family of the sun and its planets the Milky Way.答案:D【51】 They paid no ______ to him.A、 needB、 leadC、 heedD、 kneed答案:C【52】 I suggest ______ in English in class.A、 talkB、 to talkC、 talkingD、 talks答案:C【53】 Printing ______ greatly at the beginning of the 11th century.A、 was developedB、 is developedC、 will be developedD、 has been developed答案:A【54】 In China, when someone gives you a present, it’s thought impolite to open it ______.A、 luckilyB、 properlyC、 immediatelyD、 clearly答案:C【55】–Would you like to go to the bookstore with me?– ______ I also want to buy an English dictionary.A、 That’s true.B、 It’s a good idea.C、 It doesn’t matter.D、 No, thank you.答案:B【56】 Political and religious systems, ______ customs, they all came tumbling down like so many rotten apples off a tree.A、 socialB、 societyC、 sociableD、 socialize答案:A【57】– Dou you ______ feel lonely?– Yes, sometimes.A、 justB、 everC、 neverD、 even答案:B【58】 Don’t drink the soup. It smells ______.A、 wonderfulB、 terribleC、 niceD、 delicious答案:B【59】 It’s time ______ the fashion show.A、 to watchB、 watchC、 seeD、 to see答案:A【60】 I can’t wait ______ the pop singer.A、 meetB、 to meetC、 meetingD、 met答案:B【61】 Many of our most deeply ______ opinions are held simply as a result of the fact that we happen to have been “brought up” to them.A、 rootingB、 rootsC、 rootedD、 root答案:C【62】 Today we know more about ______. We’re better at preventing illness.A、 medicineB、 pollutionC、 environmentD、 population答案:A【63】 The first rule of camping is to keep a clean camp site, so let’s tidy ______ up.A、 itB、 themC、 himD、 her答案:A【64】 I made a big cake ______ chocolate and grapes.A、 toB、 fromC、 withD、 on答案:C【65】 The young man ______ teaches us English is from America.A、 whoB、 whichC、 whomD、 whose答案:A【66】 The sign “No Smoking” means “You ______ smoke here. ”A、 can’tB、 needn’tC、 mustn’tD、 won’t答案:C【67】 Xi Jinping visited Russia ______ March 22nd, 2013.A、 ofB、 atC、 onD、 to答案:C【68】 I hear that you are ______ collecting stamps. Could I have a look?A、 pleased withB、 similar toC、 interested inD、 ready for答案:C【69】 They asked to find out the real ______ of the machine.A、 inventB、 inventingC、 inventorD、 invention答案:C【70】 He had some statues in his study. One was a lady ______ nothing but a bath towel.A、 wearingB、 wearsC、 woreD、 to wear答案:A【71】 My father took the photos ______ we lived in Cambridge.A、 thoughB、 sinceC、 untilD、 when答案:D【72】– How are you getting on there?– Don’t worry. ______ goes well.A、 SomethingB、 EverythingC、 AnythingD、 Nothing答案:B【73】 Martin and Mary ______ their baskets of seeds on a fence outside the village.A、 restedB、 tookC、 threwD、 stole答案:A【74】 How to Keep Healthy答案:提示：1. 健康的重要性。
计算机网络基础复习资料
第一章计算机网络概述习题1.什么叫计算机网络？计算机网络就是利用通信设备和通信线路将不同地理位置的具有独立功能的多台计算机连接起来用以实现资源共享和在线通信的系统。
2.计算机网络有那些功能？计算机网络主要的功能是通信功能和对硬件、软件和数据等资源共享。
3.计算机网络的开展分为哪些阶段？各有什么特点？计算机网络的开展过程包括四个阶段：1)面向终端的计算机通信网络：特点是计算机为网络的中心和控制者，各终端分布在各处，终端通过通信线路共享主机的硬件和软件资源；2)计算机网络互联阶段：特点是计算机与计算机直接直接通信，计算机网络分成通信子网和资源子网，分别完成数据通信和数据处理两大功能；3)具有统一的体系构造、遵循国际化标准协议的计算机网络：特点是遵循OSI/RM，是计算机网间网互联的要求；4)高速网络互联阶段：特点是使用TCP/IP体系，完成了网间网高速通信和资源共享。
4.计算机网络按地理范围可以分为哪几种？计算机网络根据所覆盖的地理范围不同分为：局域网〔几米到几公里〕城域网〔十公里到几十公里〕广域网〔百公里道几千公里〕5.计算机网络常见的拓扑构造有哪些？各有什么特点？网络的拓扑构造主要包括星形构造、总线形构造和环形构造：1)星形构造的特点是：控制简单、故障诊断容易、扩展容易；2)总线形构造的特点是：安装容易，故障隔离性好、易扩展和维护；3)环形构造的特点是：适合于光纤高速传输，单方向数据传输，一个节点出现故障影响其它节点数据传输。
6.计算机网络系统由通信子网和资源子网组成。
7.一座大楼内的一个计算机网络系统属于LAN。
8.计算机网络中可以共享的资源包括硬件、软件、数据、通信信道。
第二章数据通信根底习题一、1.将一个信道按频率划分为多个子信道，每个子信道上传输一路信号的多路复用技术称为频分多路复用。
2.调制解调器的作用是实现数字信号在模拟信道中的传输。
3.接收端发现有出过失时，设法通知发送端重发，直到正确的码字收到为止，这种过失控制方法称为自动请求重发。
提高组(高中组)初赛复习资料2
九、计算机网络知识
1、计算机网络的拓扑结构 网络中各个站点相互连接的方法和形式称之为网络拓扑 总线拓扑 星型拓扑
环型拓扑
树型拓扑
2、计算机网络体系结构的核心是OSI模型
国际标准化组织（ISO）提出的开放系统互联参考模型（ OSI ） 已成为网络体系结构的标准
7432
在这些层中，除了最高的第 7 层没有需要服务的上一层、最 低的第 1 层没有可利用服务的 下一层外，其它的每一层都建 立在下一层的基础上，利用下 一层来实现自己的功能，并向 上一级提供服务。 主机A与主机B进行通信时， 通信协议是在对等层之间进行 的。其中，物理层与物理层之 间的通信协议是直接的，其他 对等层之间的通信协议都是间 接的。
容斥原理的第一形式：设A，B是有限集合，则
A B A B A B
容斥原理的第二形式：设A、B、C是有限集合，则
A B C A B C B C C A A B A B C
1、（NOIP10）75名儿童到游乐场去玩。他们可以骑 旋转木马，坐滑行铁道，乘宇宙飞船。已知其中 20人这三种东西都玩过，55人至少玩过其中的两 种。若每样乘坐一次的费用是5元，游乐场总共收 入700，可知有 名儿童没有玩过其中任何一种。
4．已知A=11001010，B=00001111，C=01011100，A∨B∧C=(
(A)11001110 (C)11101110 (B)01110110 (D)01001100
)。
5．下列逻辑运算正确的是（ A) A·（A + B ）= A B) A +（A·B）= A
）。
C) A·（B + C ）= A·B + A·C D) A +（B·C）=（A + B）·（A + C） E) A+1=A
电子商务复习资料2
一、判断题1．B2C电子商务基本属于网络商品直销的范畴。
（对）2．企业间网络交易是B2B电子商务的一种基本形式。
（对）3．网络商品中介交易是通过网络商品交易中心，即通过虚拟网络市场进行的商品交易。
是B2B电子商务的另一种形式。
（对）4．买卖双方在交易过程中由于违约所进行的受损方向违约方索赔的行为，不属于电子商务交易过程。
（错）5．知名产品不宜在网上销售，因为其价格较贵。
（错）6．数字化产品最合适在网上销售。
（对）二、单选题1．电子商务一般的交易过程分为5个阶段，“卖方为本企业的商品做好市场调查和分析，制订销售策略和方式，不断利用Internet站发布广告，诱发客户的需求，给出报价和优惠消息，寻找贸易伙伴和商机，想方设法扩大市场份额等”，这些行为属于( A)A．“交易前准备”阶段 B．“办理合同履行前的手续”阶段C．“交易后处理”阶段 D．“洽谈和签定合同”阶段2．商家要开展电子商务活动，应该用（C ）作为其主要的生意平台。
A．BBS B．电子邮件C．在线商店．D：电话定购3．电子商务的两种基本流程是( B )A．无认证中心的网络商品直销和认证中心存在下的网络商品直销B．网络商品直销的流程和网络商品中介交易的流程C．企业间网络交易的流程和网络商品中介交易的流程D．网络商品直销的流程和网络商品非直销的流程4．下列说法哪一个是正确的?( B )A．网络商品中介交易不属于B2B电子商务形式B．认证中心存在下的网络商品直销不属于B2C电子商务形式C．企业间网络交易是B2B电子商务的一种基本形式D．B2C电子商务不属于网络商品直销的范畴5．制造商和外部原材料供应商之间的电子商务属于( A )A．企业之间的电子商务 B．企业与政府部门之间的电子商务C．企业内部的电子商务 D．企业与消费者之间的电子商务7．某企业是一家铁矿石开采的企业，它开采出来的铁矿石直接销售给不同的冶金企业。
目前该企业已经开展了电子商务营销，您认为该企业应当采取什么样的电子商务营销模式比较适合该企业的发展？（ A ）A．B2B B．B2CC．C2C D．B2C+C2C8．水平B2B中的“水平”指的是（ C ）A. 网站的软件建设结构采用水平模式B. 多个同类的网站组成的交易集合C. 网站的行业范围广，很多行业都可以在同一网站上进行贸易活动D. 网站内容模块的水平设置三、多选题1．B2B是通过( BC )进行的电子商务活动。
计算机网络复习资料(选择)
计算机网络复习资料1、分组交换网之父ARPANET。
2、网络协议三要素：语法、语义、同步。
3、路由表分组转发算法在路由器的IP层执行。
寻找路由的算法顺序：直接交付—>特定主机路由—>正常路由—>默认路由4、系统管理的五个区域：故障管理、配置管理、计费管理、性能管理和层管理。
5、停止等待协议采用设置发送信号解决“重复帧”。
6、OSI七层协议体系结构中，各层的协议数据单元：物理层：比特流数据链路层：帧网络层：数据分组传输层：报文段7、OSI物理层四个特性：机械特性、电气特性、功能特性、规程特性。
8、网卡地址的二进制位为48位。
9、传统的集线器是第一层设备，集线器扩大了冲突域。
10、目前流行的网络管理系统都是采用基于TCP/IP模型的一个工业标准协议SNMP。
11、TCP/IP的网络层含有四个重要的协议：IP、ICMP、ARP、RARP。
12、URL地址由协议、主机名、目录文件名三部分组成。
13、子网IP的组成结构：网络地址+子网地址+主机地址。
14、从OSI层次来看，路由器是一个第三层设备。
15、在数据交换之前，TCP协议采用了三次握手来建立双方的同步。
16、在应用层有一个常用软件ping，可用来测试两个主机之间的连通性。
17、透明网桥使用支撑树算法解决兜圈子问题。
18、信息传输速率=码元传输速率*log2~N(N为进制）。
19、在OSI模型中，第N层为N+1层提供服务。
20、线路利用率最高的是分组交换。
21、构成TCP/IP模型的四个层次：网络接口层、网际层、运输层、应用层。
22、集线器和路由器分别运行于物理层和网络层。
23、在Internet中能够提供任意两台计算机之间传输文件的协议是FTP。
24、TCP/IP体系结构中TCP和IP所提供的服务分别为运输层服务和网络层服务。
25、OSPF协议中链路状态更新分组使用洪泛的方法来发送。
26、实时监测控制不属于Internet因特网基本功能。
计算机网络复习题及参考答案
《计算机网络》课程复习资料一、填空题：1.计算机网络按地理范围分类，可以分为___________、___________、_____________。
2.在OSI七层模型中，层传输信息帧，层进行路由选择，层是真正的“端到端”的层。
有三种不同类型的帧，分别称为______、______、______。
4.在HDLC协议中，若要传输的数据位是00，在链路上传输的数据是_______,接收方最后接收的数据是______。
5.数据链路层在局域网参考模型中被分成了两个子层：______与LLC层；LLC层完成通常意义下的数据链路层功能，如______和流量控制等。
6.在数据链路层中采用3比特对数据帧编号，若采用后退n-帧重传的策略，则发送窗口最大是、接收窗口是；采用选择重发协议，则发送窗口最大是、接收窗口是。
7.协议的三要素为_ 、、。
8.会话层中同步点的设置包括和。
9.传输数据时，出错位数与总的传输位数之比为。
协议的作用是_ 。
从网络协议层次功能划分来看，它属于网络层次的协议。
协议的功能是 _ 。
12.为解决网络拥塞问题，传输层的数据发送方需要维护窗口和窗口，数据发送方的发送能力与这两个窗口的关系是。
13.在OSI参考模型中，服务原语划分为四种类型，分别为请求(Request)，指示(Indication)_______和____________。
14.在ISO的OSI模型中，一般提供数据的压缩和加密的是__________。
为数据分组提供在网络中路由功能的是__________；传输层提供__________的数据传送。
15.对一个4比特信息串，欲求它的海明码字，最少需要插入的冗余码位数为。
16.试写出几种局域网组网介质：、、。
17.常见的无线介质包括、、、。
其中应用于卫星与地面通信的介质是、。
18.计算机网络的主要目的是和。
19.在OSI七层模型中，把传输的比特流划分成帧，决定使用哪条路径通过子网，为用户进程间建立连接，对用户数据的进行加密解密处理。
华师在线 网院 大学英语2复习资料(考试题库)
We must do well____________the boss assigns us to do.A.thatB。
whateverC.whicheverD.those标准答案：BThe reason we're so late is ____________。
A.for the car breaks downB。
due to the car breaking downC。
that the car broke downD.because the car broke down标准答案：CYou can't imagine____________ when they received these gifts.A。
how they were excitedB.how excited they wereC.how excited they haveD。
they were how excited标准答案：BStudents in his class cannot understand____________。
A.what does the sentence meanB。
what means this sentenceC.what this sentence meansD。
what is the meaning of the sentence标准答案：CNo one was aware ____________Jane had gone. A。
where thatB.of the placeC.of whereD.the place标准答案：CDo you know ____________？A.when does the party startB。
whether the party startsC.what time the party startsD。
if the party starts标准答案:C ______ is a fact that English is accepted as aninternational language。
网络考试专升本大学英语二考试复习资料
网络考试专升本大学英语二考试复习资料网络考试专升本大学英语二考试复习资料单项选择1. The director was critical __ the way we were doing the work.A atB inC ofD with2. In a sudden __ of anger, the man tore up everything within reach.A attackB burstC splitD blast3. __ she realized it was too late to go home.A No sooner it grew dark thanB Hardly did it grow dark thatC Scarcely had it grown dark thanD It was not until dark that4. In Britain people __ four million tons of potatoes every year.A swallowB disposeC consumeD exhaust5. I'd __ his reputation with other farmers and business people in the community, and then make a decision about whether or not to approve a loan.A take into accountB account forC make up forD make out6. She cooked the meat for a long time so as to make it __ enough to eat.A mildB slightC lightD tender7. We take our skin for granted until it is burned __ repair.A beyondB forC withoutD under8. The computer revolution may well change society as __ as did the Industrial Revolution.A certainlyB insignificantlyC fundamentallyD comparatively9. __ in this way, the situation doesn't seem so disappointing.A To look atB Looking atC Looked atD To be looked at10. Some women __ a good salary in a job instead of staying home, but they decided not to work for the sake of the family.A must makeB should have madeC would makeD could have made11. You cannot be __ careful when you drive a car.A veryB tooC soD enough12. Every man in this country has the right to live where he wants to __ the color of his skin.A regardless ofB in the light ofC by virtue ofD with the exception of13. Housewives who do not go out to work feel they are not working to their full __.A strengthB capacityC lengthD possibility14. The old couple decided to __ a boy and a girl though they had three of their own.A adaptB bringC adoptD receive15. The government is trying to do something to __ better understanding between the two countries.A raiseB increaseC heightenD promote16. The newspaper did not mention the __ of the damagecaused by the fire.A extentB levelC rangeD quantity17. The soldier was __ of running away when the enemy attacked.A accusedB chargedC scoldedD punished18. Had he worked harder, he __ the exams.A must have got throughB could get throughC would get throughD would have got through19. It seems oil __ from this pipe for some time. We'll have to take the machine apart to put it right.A had leakedB has been leakingC leakedD is leaking20. When he arrived, he found __ the aged and the sick at home.A nothing butB none otherC none butD no other than21. The pressure __ causes Americans to be energetic, but it also puts them under a constant emotional strain.A competingB to competeC to be competedD having competed22. As teachers we should concern ourselves with what is said, not what we think __.A have to be saidB must sayC ought to be saidD need to say23. Once environmental damage __, it takes many years for the system to recover.A is doneB is to doC doesD has done24. Studies show that the things that contribute most to a sense of happiness cannot be bought, __ a good family life, friendship and work satisfaction.A as forB such asC in case ofD in view of25. He will agree to do what you require __ him.A forB fromC toD or26. The mere fact __ most people believe nuclear war would be madness does not mean that it will not occur.B whichC whatD why27. John seems nice person. __, I don't trust him.A Even thoughB ThereforeC Even soD Though28. I don't think it advisable that Tom __ to the job since he has no experience.A be assignedB will be assignedC is assignedD has been assigned29. __, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of language is poor.A Other things to be equalB Were other things equalC To be equal to other thingsD Other things being equal30. __ that my head had cleared, my brain was also beginning to work much better.A ForB SinceC NowD Despite31. By 1929, Mickey Mouse was as popular __ children as Coca-Cola.B withC toD in32. Because Edgar was convinced of the accuracy of this fact, he __ his opinion.A stuck toB strove forC stuck atD stood for33. It’s no use __ me not to worry.A you tellB your tellingC for you to have toldD having told34. If it __ too much trouble, I’d love a cup of tea.A isn’tB wasn’tC weren’tD hadn’t been35. She was glad that her success would ___ for the women who would follow.A make things easierB make it easierC be easierD be easier to make36. We object __ punishing a whole group for one person’s fault.A againstB aboutD for37. The newest satellite can __ a thousand telephone conversations and a color TV program at the same time.A carryB extendC bringD take38. The grey building is where the workers live, and the white one is where the spare parts __.A are producingB are producedC producedD being produced39. __ a teacher in a university, it is necessary to have at leasta master's degree.A To becomeB BecomeC One becomeD On becoming40. The little man was __ more than one metre fifty tall.A nearlyB quiteC hardlyD almost参考答案: CBDCA DACCD BABCD AADBCDCABD ACADC BABAC CABAC奕诚教育荆州分校整理提供QQ：1652449936完形填空Directions: There are 20 blanks in the following passage. For each blank there are four choices marked [A], [B], [C]and [D]on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.Modern people wear many masks that keep their reality confined and ____41___, even to themselves. The possibility of encountering one’s ____42___, learning about one’s self, is frightening and ____43___. Many people expect ____44___ the worst. A hidden fear ____45___ the fact that they may also discover the best. To discover the worst is to face the decision of ____46___ or not to continue in the same pattern. To learn the best is to face the decision of whether or not to live up ____47___ it. ____48___ discovery may involve change and ____49___ causes anxiety. ____50___ , this can be a creative anxiety which may be thought of as excitement—the excitement of enhancing one’s ____51___ for being a winner. Transactional analysis is a(n) ____52___ you can use to know yourself, to know how you relate to others, and to discover the dramatic ____53___ your life is taking. The unit of personality structure is the ego state. By becoming ____54___ of your ego state, you can ____55___ between your various sources of thoughts, feelings, and behavior pattern. You can be more aware of the choices available to you. The unit of measure in interpersonal relationships is the ____56___. By analyzing your transactions, you can gain a ____57___ conscious control of how you operate with other people and how they operate with you. Transactional analysis is a practical ____58___ from which you can ____59___ old decisions and behavior and change ____60___ you decide is desirable for you to change.41. [A]known [B]unknown [C]surrounded [D]unlimited42. [A]mask [B]armor [C]reality [D]fact43. [A]frustrating [B]exciting [C]interesting [D]encouraging44. [A]discovering [B]to discover [C]be discovered[D]to be discovered45. [A]relies on [B]lies in [C]based on [D]according to46. [A]how [B]why [C]what [D]whether47. [A]to [B]on [C]with [D]in48. [A]Both [B]Either [C]One [D]Neither49. [A]therefore [B]however [C]even [D]but50. [A]Therefore [B]Moreover [C]Then [D]However51. [A]possibility [B]pattern [C]anxiety [D]decision52. [A]instrument [B]appliance [C]equipment [D]tool53. [A]course [B]process [C]track [D]direction54. [A]beware [B]aware [C]awake [D]unconscious55. [A]choose [B]change [C]distinguish [D]compare56. [A]transaction [B]transition [C]transmission[D]transformation57. [A]much [B]more [C]few [D]little58. [A]desire [B]frame [C]stage [D]step59. [A]evaluate [B]change [C]make [D]decide60. [A]which [B]that [C]whether [D]what奕诚教育荆州分校整理提供电话：158********参考答案：BCABB DABAD ADABC ABBAD。
国开[课程号01508]《网络系统管理与维护-形考作业2》复习资料答案
国开[课程号]01508-网络系统管理与维护-形考作业2
试卷满分100分得分100分
【题目】（）病毒是一种寄生在磁盘引导区的计算机病毒，它用病毒的全部或部分取代正常的引导记录，而将正常的引导记录隐藏在磁盘的其他地方
A. 文件型
B. 破坏型
C. 破坏型
D. 引导型
正确答案是：引导型
【题目】以下关于计算机病毒的特征说法正确的是：（）
A. 计算机病毒只具有破坏性，没有其他特征
B. 计算机病毒具有破坏性，不具有传染性
C. 破坏性和传染性是计算机病毒的两大主要特征
D. 计算机病毒只具有传染性，不具有破坏性
正确答案是：破坏性和传染性是计算机病毒的两大主要特征
【题目】以下关于宏病毒说法正确的是：（）
A. 宏病毒主要感染软盘、硬盘的引导扇区或主引导扇区
B. 宏病毒主要感染可执行文件
C. CIH病毒属于宏病毒
D. 宏病毒仅向办公自动化程序编制的文档进行传染
正确答案是：宏病毒仅向办公自动化程序编制的文档进行传染
【题目】以下哪一项不属于计算机病毒的防治策略：（）
A. 禁毒能力
B. 解毒能力
C. 查毒能力
D. 防毒能力
正确答案是：禁毒能力
【题目】木马在建立连接时，并非必须的条件是（）
A. 服务端在线
B. 控制端在线
C. 已获取服务端系统口令
D. 服务端已安装了木马
正确答案是：已获取服务端系统口令
【题目】下列预防计算机病毒的注意事项中，错误的是（）。
A. 重要资料经常备份
B. 尽量避免在无防毒软件机器上使用可移动储存介质。
网络与新媒体复习资料全
网络与新媒体概论一、人类社会的四次传播革命1.文字的发明和使用2.印刷术发明3.电报发明4.互联网相关技术的推广使用以及由此带来的新媒体勃兴二、新传播革命的本质1.信息源蜂窝式高速膨胀，保障知情权回归2.“自媒体”即时化传播，促进表达权回归3.全面信息监管失效,“权利”上升为“权力”三、新传播革命的基本特征（一）去中心化（是指互联网技术本质上是以个人为中心的传播技术，具有天然的反中心取向）（二）再中心化（是指网络信息离散后又重聚的特征）1.意见领袖阶层崛起，重塑思想中心2.社会关系洗牌，重构行动中心3.话语空间拓展，重建舆论中心四、新传播革命的挑战1.新业态，新闻生产经营大变革2.双重舆论场争鸣，舆论极化难控制3.多元思潮涌现，主流意识形态受冲击4.全新执政环境，争夺传播主导权五、互联网发展的两大支点：“全球化”“个人化”时代背景：现代性和后现代性杂糅现代性特征：全球化（整体性的社会化大生产）后现代性特征：个人化（个人对于体制的和个人生存状态的觉醒）六、计算机诞生的标志计算机诞生的标志是-阿帕网，1983年TCP/IP协议成为美国互联网的标准通信协议，整个世界开始普遍采用这一系统结构，这标志着全球互联网的正式诞生七、新媒体的基本特征1.数字化（数字化是新媒体的显著技术特征）2.交互性（交互性是新媒体的本质传播特征）3.超时空（超时空是新媒体的外部效果特征）1994年，世界上第一个门户Yahoo！，我国的三大门户新浪、搜狐、网易均在1998年前后相继成立。
web2.0时期的网络应用是“一对多”与“多对多”并立，出现了以个人为中心的传播形式，互动性加强，容生产包括信息交互与行为记录。
新技术的发展趋势1.数据化：数字技术走向大数据时代2.智能化：计算机网络技术从web1.0到web3.03.移动化：移动通信技术从1G到3G（5G）八、互联网的功能与应用1.信息传播的通道2.知识生产的平台3.人际交往的平台4.娱乐新天地5.商务活动的平台〈B2B（Business_Business）〉、〈B2C（Business_Customer）〉、〈C2C（Customer_Customer）〉6.意见自由市场九、从受众到用户1.从被动接受到主动获取2.从接收信息到传播信息3.从消费商品到生产容4.从匿名群体到真实个体5.从受众反馈到用户体验服十、互联网用户的小众化、碎片化趋势★小众化的积极面向1.文化发展的新方向2.经济增长的新动力★小众化的消极面向1.“信息茧房”的扩（信息茧房概念-公众往往根据自身的兴趣爱好获取信息，因而信息结构是不完整、不全面的，久而久之，会置身蚕茧一般的狭隘的空间。
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1.协议是什么？
为进行网络中的数据交换而建立的规则、标准或约定成为网络协议。
协议由三要素组成：语法，即数据与控制信息的结构或格式。
语义，即需要发出何种控制信息，完成何种动作以及做出何种响应。
同步，即事件实现顺序的详细说明。
2. 曼彻斯特编码的特征是什么？
曼切斯特编码的每个比特位在时钟周期内只占一半，当传输“1”时，在时钟周期的前一半为高电平，后一半为低电平；而传输“0”时正相反。
这样，每个时钟周期内必有一次跳变，这种跳变就是位同步信号。
3. MAC地址的特征是什么？
在局域网中，硬件地址又称为物理地址或MAC地址，TEEE802标准为局域网规定了一种48位的全球地址，是指局域网上的每一台计算机固化在适配器的ROM中的地址。
实际上就是适配器地址或适配器标识符EUI-48.
4.TCP/IP模型中各层主要包含哪些协议？
Tcp/ip的四层协议包括：网络接口层，网际层IP，运输层，应用层
网络接口层：
网际层IP：ip协议，icmp，arp，rarp
运输层：tcp,udp
应用层：telnet,ftp,smtp,http,rip nfs,dns
网络接口层：负责接收和发送物理帧
网络层：负责相邻节点之间的通信
传输层：负责起点到终点的通信
应用层：提供诸如文件传输、电于邮件等应用程序
5.ARP协议的步骤是什么？P120
6.IPv6的地址表示方法
把每个16位的值用十六进制值表示，各值之间用冒号分隔。
：：P361
7. 计算机网络从逻辑功能上分成什么？通信子网和资源子网
按照传输技术分类呢？点到点式网络、广播式网络
8. 数据链路层分成什么？
数据链路层将本质上不可靠的传输媒体变成可靠的传输通路提供给网络层。
在IEEE802.3情况
下，数据链路层分成了两个子层，一个是逻辑链路控制，另一个是媒体访问控制。
9.DNS解析方式有哪些？
DNS服务解析方式分为正向解析和反向解析
10.水晶头制作标准？
T568A：白绿、绿、白橙、蓝、白蓝、橙、白棕、棕
T568B：白橙、橙、白绿、蓝、白蓝、绿、白棕、棕
直通线制作：两头线序都遵循T568B
交叉线制作：一头遵循T568B，另一头遵循T568A
网络线的制作步骤：剥线、理线、插线、压线
11.各种网络接入设备的区别？
12.什么是特定主机路由、默认路由和静态路由？
（1）、静态路由
是一种由网管手工配置的路由路径，网管必需了解路由器的拓扑连接，通过手工方式指定路由路径，而且在网络拓扑发生变动时，也需要网管手工修改路由路径。
（2）、默认路由
也是一种由网管手工配置的路由路径，它使路由器把所有地址不能识别的数据包通过指定的路径发送出去，由其它路由器进行处理。
默认路由可看作是静态路由的特例，而且维护代价较低。
（3）、动态路由
是一种通过某种路由协议，由路由器自学习到的路由，它不需要手工配置，而且可自动随着网络环境的变化而变化，维护代价很低，特别适合大范围的路由。
13.计算CRC校验码？P69
14.掌握IP地址规划
简答题：ftp分几种模式，各自的区别？
FTP协议有两种工作方式：PORT方式和PASV方式，中文意思为主动式和被动式。
PORT（主动）方式的连接过程是：客户端向服务器的FTP端口（默认是21）发送连接请求，服务器接受连接，建立一条命令链路。
当需要传送数据时，客户端在命令链路上用PORT 命令告诉服务器：“我打开了XXXX端口，你过来连接我”。
于是服务器从20端口向客户端的 XXXX端口发送连接请求，建立一条数据链路来传送数据。
PASV（被动）方式的连接过程是：客户端向服务器的FTP端口（默认是21）发送连接请求，服务器接受连接，建立一条命令链路。
当需要传送数据时，服务器在命令链路上用PASV 命令告诉客户端：“我打开了XXXX端口，你过来连接我”。
于是客户端向服务器的XXXX端口发送连接请求，建立一条数据链路来传送数据。
从上面可以看出，两种方式的命令链路连接方法是一样的，而数据链路的建立方法就完全不同。
而FTP的复杂性就在于此。
主动模式（PORT）和被动模式（PASV）。
主动模式是从服务器端向客户端发起连接；被动模式是客户端向服务器端发起连接。
两者的共同点是都使用21端口进行用户验证及管理，差别在于传送数据的方式不同，PORT模式的FTP服务器数据端口固定在20，而PASV 模式则在1025-65535之间随机
http：超文本传输协议
dns：域名服务器
设计题；配置路由器。