⑴ 跪求一遍關於計算機網路的英語作文..字數在1200以上的..
Computer networks
Now every almost have computers, and computer good does have its downside - it depends on how you use. If you want to ask me: I on the computer do what, I can tell you, I will do a lot of things in the computer. May first and have out-of-town relatives chat, then can check information, listening to music, watching movies, paint... My favorite on the computer music and watching movies, because it very relaxing my mood.But the most people used compter to surf the internet.Now Let us know about the computer network
Ⅰ.Introction
Computer networks,the wide spread sharing of information among groups of computers and their users,are a central part of the information age.The popular adoption of the personal computer(PC)
and the local area network (LAN) ring the 1980s has led to the capacity to access information on a distant database;download an application from overseas;send a message to a friend country;and share files with a colleague-all from a personal computer.
The network that allow all this to be done so easily are sophisticated and complex entities.They rely for their effectiveness on many cooperating computers.The design and deployment of the wordwide computer network can be viewed as one of the great technological wonders of recent decades. Nowadays Intemet is very popular all over the world, especially in some big cities. Do you know when the Intemet was first established? Built in 1960s, the Internet was a crude network of a few computers which shared information. If one of the computers broke down, the whole networks would be unable to work, causing continual problems. At first, just the government had access to the Internet, using it for communications among different branches. However, by 1970s the Internet had been used in universities, banks, and hospitals. At the beginning of 1990s computers became affordable for common people and this affordability increased the use of the Internet by people,It is said that each day tens of millions of people log off, making it the most important part of people's life.
Ⅱ.Local Area Network
One of the most dramatic events in computer networking has been the introction and rapid growth of local area network(LAN) as a way to standardize the system of linking computers used in office systems.As the name suggests,this is a means of connecting a number of computing elements together.At the simplest level,a LAN provides no more more than a shared medium (such as a coaxial cable to which all computers and printers are connected) along with a set of rules that govern the access to that medium.The most widely used LAN,Ethernet,used a mechanism called Carrier Sense Multiple Access-Collosion Detect(CSMA-CD).This means that each connected device can only use the cable when it has established that each connected device is using it.If there is contention, the device looking for a connection backs off and tries again later.The Ethernet transfers data at 10M bits/sec,which is fast enough to make the distance between devices insignificant.They appeat to be connected directly to their destination.
There are many different layouts(such as bus ,star,ring,see Figure 6A-2)and a number of different access protocols for LANs.Despire this variety,all LANs share the feature that they are limited in range (typically they cover one building) and are fast enough to make the connecting network invisible to the devices that use it.
In addition to providing shared access,modern LANs can also give users a wide range of sophisticated facilities.Managenment software packages are available to control the way in which devices are configured on the local area network (LAN),how users are administered,and how network resources are controlled.A widely adopted structure o local network is to have a number of servers that are available to a (usuallu much greater) nember of clients.The former,usually powerful computers,provide service such as print control,file sharing,and mail to the latter,which are usually personal computers.
Ⅲ.Routers and brideges
The facilities on most local area network (LAN) are very powerful.Most organizatonns do not wish to have small isolated islands of computing facilities.They usually want to extend facilities over a wider area so that groups can wok wtthout having to be located.Routers and bridges arespecialized devices that allow two or more local area network (LAN) to be connected.The bridges is the more basic device and can only connect local area network (LAN) of the same type.The router is a more intelligent component that can interconnent many different types of computer network.
Many large companies have corporate adta network that are founded on a collection of local area network (LAN) and routers.From the user』s point of view,this arrangement provides them with a physically diverse network that looks like one coherent resource.
Ⅳ.Wide Area Networks
At some point,it becomes impractical to extend a local area network (LAN) any further.Physical limitation sometimes drives this,but more often than not there are more concenient or cheaper ways to extend a computer network.Two major components in most real computer networks are the public telephone and data networks.These provide long-distance links that extend a local area network (LAN) into a wide area network (WAN).Nearly all of the national network operators offer services for the interconnection of computer networks.These services range from simple, low speed data links that work over the public telephone network to sophisticaied high speed data services that are ideally suited to the interconnection of LANs.These high speed data services are usually referred to as broadband connection.It is anticiopated that they will provide the necessary links between LANs that make what is called the information superhighway a reality.
⑵ 互聯網的利與弊，英語作文100字，帶中文翻譯。謝謝
Internet is an international computer network connecting other networks and computers from companies, universities, etc. At present, most of people can use computer for working, chatting, playing game, watching the movie and picture, and searching anything by clicking on Internet. Internet is useful assistant for leading you to another world which amazing thing. I think Internet has advantage and disadvantage. Advantage of Internet is that you can do anything that you want on Internet when it was connected to independent world such as download data, programs, game, picture etc. But Internet has risk to receive spy ware, it attempts to disable or delete anti-spy ware tool and suppress warning massages given to users, it damages your data or system in your computer. Moreover, you have risk to find the bad persons when chat in chat room especially women. You can found the crime news on the newspapers. The news said they have many victim from chatting with unknown people by the victim were believed implicitly. In conclusion, many people still use Internet because it is useful and comfortable. 互聯網是一個國際計算機網路連接其他網路和計算機公司，大學等。目前，大多數的人會使用電腦工作，聊天，玩游戲，看電影和圖片，並點擊搜索任何互聯網。互聯網是一種有用的輔助引導你到另一個世界的神奇的東西。我認為網際網路有優點和缺點。利用互聯網，你可以做任何你想在互聯網上時，連接到獨立的世界，如下載數據，程序，游戲，圖片等，但互聯網風險接受間諜軟體，它試圖禁用或刪除反間諜軟體工具和制止警告給用戶，它損害您的數據或系統在您的計算機。此外，你有可能找到壞人聊天，在聊天室特別是婦女會受欺騙。你可以發現犯罪新聞的報紙。新聞說他們有許多受害者和不明身份的人聊天。總之，許多人仍然使用互聯網，因為它是有用的和舒適的。
⑶ 關於網路的高中英語作文帶翻譯
下面我為大家帶來關於網路的 高中 英語 作文 帶翻譯，歡迎大家學習!
關於網路的高中英語作文帶翻譯1：
In my opinion，the Internet is helpful rather than harmful as someone else thinks. As is known to all，the Internet is playing a more and more important part in our daily life. On the Internet，we can read news at home and from abroad and get as much information as we can. We can send e - mails or make phone calls to our family as well as to our friends. We can also attend the net school，read many books and even teach ourselves English. We can also enjoy music，watch matches and play computer games on the Internet. We can even do shopping on line. Besides，we can improve our ability to operate the computer.
But we should not be given to the Internet，or we'll get our life and study destroyed. Besides，we should keep off the harmful websites. Anyhow，this doesn't prevent the Internet becoming our friend. We can't throw away the apple because of the core，can we?
在我看來,互聯網是有用的,而不是像別人認為有害。眾所周知,互聯網正在發揮著越來越重要的部分在我們的日常生活中。在互聯網上,我們可以閱讀新聞在國內和國外,獲得盡可能多的信息。我們可以發送電子郵件或打電話給我們的家人以及我們的朋友。我們還可以上網路學校,閱讀了很多的書籍,甚至教我們英語。我們還可以欣賞音樂,觀看比賽,玩電腦游戲在互聯網上。我們甚至可以在網上購物。此外,我們可以提高我們操作電腦的能力。
但我們不應給互聯網,或者我們會毀了我們的生活和學習。除此之外,我們應該遠離有害的網站。不管怎樣,這並不妨礙互聯網成為我們的朋友。我們不能扔蘋果的核心,我們可以嗎?
關於網路的高中英語作 文 帶翻譯 2：
Now many of my classmates like to surf the Internet in their free time.I think Internet can bring us both advantages and disadvantages.
For example，I can surf the internet to learn more information about the world. And I can make more friends on it. I can also talk with my teacher or my classmates some problem after class。
However, Internet can make some problems at the same time. If you spend too much time on it ,you will be come lazy and can't put your heart on study. It will be even worse if you feel you can't live without Internet.
So we must be careful when we use the Internet.
現在我的很多同學喜歡在閑暇時間上網。我認為互聯網能給我們帶來兩個優點和缺點。
例如,我可以上網了解更多關於世界的信息。我可以認識更多的朋友。我也可以跟老師或同學下課後一些問題。
然而,互聯網可以使一些問題在同一時間。如果你花太多時間在這上面,你會懶惰,不能把心用在學習上。這將是更糟糕的是,如果你覺得你的生活不能沒有互聯網。
所以我們必須小心當我們使用互聯網。
關於網路的高中英語作文 帶翻譯 3：
With the development of the science and technology,the computer has been becoing the necessity for people in the 21st Century.Following,network is of close link with our life,bringing us incomparable convenience on our life and work.
Through the network,we can search for useful datas and get to know the current events.When you play computer games after a long-time work,it can relieve your pressure and make you feel relaxed.Besides,playing online games is not all bad,for it can fulfil students' entertaining requests as well as practise their response ability.
However,there still exists some disadvantages in the network.The radiation from the computer will do harm to people's health if you keep on watching the computer for a long time.And short sight may caused by it for your eyes stay tense.At present,there are too many games on the Internet,but some of them are not of good quality even contain some unhealthy content like violence and so on.Duo to the lack of recognizing society and self-protection awareness,some students get addicted in the games and online dating.
In fact,network is not that horrible,as long as we know more about it,it will become our right hand on our studies.Let's build a clean network world together.
隨著科學技術的發展,計算機已經做好在21世紀人的必要性。後,網路與我們的生活緊密聯系,將我們無與倫比的方便我們的生活和工作。
通過網路,我們可以尋找有用的資料和了解時事。當你玩電腦游戲長期工作後,它可以緩解你的壓力,讓你感到放鬆。此外,玩網路游戲並不全是壞事,因為它可以滿足學生娛樂的請求以及練習他們的反應能力。
然而,網路中仍然存在一些不足之處。電腦的輻射會危害人們的健康,如果你繼續看電腦很長一段時間。和近視可能由於它對你的眼睛保持緊張。目前,在互聯網上有太多的游戲,但他們中的一些人不是質量好甚至包含一些暴力等不健康內容。兩人認識社會和自我保護意識的缺乏,一些學生上癮的游戲和網上交友。
事實上,網路並不可怕,只要我們知道更多關於它,它在我們的研究將成為我們的右手。讓我們一起建立一個干凈的網路世界。
以上就是我為大家帶來的關於網路的高中英語作文帶翻譯，希望對大家的 英語學習 有所幫助!
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⑷ 網路的利與弊英文帶翻譯500字
Pros and Cons of Networking
網路的優缺點
There is a wide variety of networks and their advantages and disadvantages mainly depend on the type of network.
Advantages of Computer Networking
1. Easy Communication and Speed
It is very easy to communicate through a network. People can communicate efficiently using a network with a group of people. They can enjoy the benefit of emails, instant messaging, telephony, video conferencing, chat rooms, etc.
2. Ability to Share Files, Data and Information
This is one of the major advantages of networking computers. People can find and share information and data because of networking. This is beneficial for large organizations to maintain their data in an organized manner and facilitate access for desired people.
3. Sharing Hardware
Another important advantage of networking is the ability to share hardware. For an example, a printer can be shared among the users in a network so that there』s no need to have indivial printers for each and every computer in the company. This will significantly rece the cost of purchasing hardware.
4. Sharing Software
Users can share software within the network easily. Networkable versions of software are available at considerable savings compared to indivially licensed version of the same software. Therefore large companies can rece the cost of buying software by networking their computers.
5. Security
Sensitive files and programs on a network can be password protected. Then those files can only be accessed by the authorized users. This is another important advantage of networking when there are concerns about security issues. Also each and every user has their own set of privileges to prevent them accessing restricted files and programs.
6. Speed
Sharing and transferring files within networks is very rapid, depending on the type of network. This will save time while maintaining the integrity of files.
Disadvantages of Networking
1. Breakdowns and Possible Loss of Resources
One major disadvantage of networking is the breakdown of the whole network e to an issue of the server. Such breakdowns are frequent in networks causing losses of thousands of dollars each year. Therefore once established it is vital to maintain it properly to prevent such disastrous breakdowns. The worst scenario is such breakdowns may lead to loss of important data of the server.
2. Expensive to Build
Building a network is a serious business in many occasions, especially for large scale organizations. Cables and other hardware are very pricey to buy and replace.
3. Security Threats
Security threats are always problems with large networks. There are hackers who are trying to steal valuable data of large companies for their own benefit. So it is necessary to take utmost care to facilitate the required security measures.
4. Bandwidth Issues
In a network there are users who consume a lot more bandwidth than others. Because of this some other people may experience difficulties.
Although there are disadvantages to networking, it is a vital need in today』s environment. People need to access the Internet, communicate and share information and they can』t live without that. Therefore engineers need to find alternatives and improved technologies to overcome issues associated with networking. Therefore we can say that computer networking is always beneficial to have even if there are some drawbacks.
網路的種類繁多，其優勢和劣勢主要取決於網路的類型。
網路的優勢如下：
1 .網路使人容易溝通和快速
通過網路進行交流很容易。人們可以通過與一群人的網路進行有效的交流。他們可以享受電子郵件、即時通訊、電話、視頻會議、聊天室等的好處。
3 .可共享硬體
聯網的另一個重要優勢是共享硬體的能力。例如，一個列印機可以在一個網路中的用戶之間共享，這樣就不必為公司中的每一台計算機都有單獨的列印機。這將大大降低采購硬體的成本。
4。共享軟體
用戶可以輕松地在網路中共享軟體。與同一軟體的單獨授權版本相比，軟體的可聯網版本在相當大的節省下可用。因此，大公司可以通過聯網電腦來降低購買軟體的成本。
5。安全
網路上敏感的文件和程序可以被密碼保護。然後，這些文件只能被授權用戶訪問。當人們對安全問題感到擔憂時，這是網路的另一個重要優勢。此外，每個用戶都有自己的許可權集，以防止他們訪問受限制的文件和程序。
6。速度
網路中共享和傳輸文件的速度非常快，這取決於網路的類型。這將節省時間，同時保持文件的完整性。
網路的缺點
1 .工作故障和可能的資源損失
由於伺服器的問題，網路的一個主要缺點是整個網路的崩潰。這種故障在網路中經常造成每年數千美元的損失。因此，一旦建立起來，就必須正確地維護它，以防止這種災難性的崩潰。最糟糕的情況是這樣的故障會導致伺服器的重要數據丟失。
2。昂貴的建造
在很多情況下，建立一個網路是一項嚴肅的業務，特別是對於大型組織來說。電纜和其他硬體的購買和更換非常昂貴。
3 .項目安全威脅
安全威脅一直是大型網路的問題。有黑客試圖竊取大公司的有價值的數據，以獲取他們自己的利益。因此，有必要採取最大的措施，以方便採取必要的安全措施。
4。帶寬問題
在網路中，用戶比其他人消耗更多的帶寬。因為其他一些人可能會遇到困難。
雖然網路也有缺點，但在當今的環境中，這是一個至關重要的需求。人們需要訪問互聯網，交流和共享信息，沒有這些信息他們就無法生活。因此，工程師需要找到替代和改進的技術來克服與網路相關的問題。因此，我們可以說，即使有一些缺點，計算機網路也總是有益的。