用英文简明的讨论下网络的优点缺点 谢谢

Question

如题所述

Answer 1

A-mother
B-son

A:Tomy, what are you doing?
汤米，在干什么？
B:Chatting with my friends,mom
跟我的朋友聊天，妈
A:Oh,you always waste your time on that sort of thing.
哦，你总是在这些事情上浪费时间
B:I don't think so,it's a kind of convenience that the net work offers.I don't need to write letters any more,you know...
我可不这么认为，这是网络时代提供的一种便利。我再也不用像以往那样写信了，你知道吗...
A:Aha,then tell me what you can get from the net?Do you think chatting is useful for you?You always saty up late at night chatting and chatting,or wallow in the online games.Look at your mark for the exam,you're really a hard-working boy!
啊哈，那么告诉我你都从网上学到什么了？你认为聊天很有用是不是？你总是一聊就聊到很晚，要不就是沉溺在网络游戏里面。看看你的考试成绩，你可真是个“用功”的小子啊！
B:Well, you know, there's more than you see.I can get a lot of information just by a click.Tell me,isn't it much better than looking up a dictionary or even searching a whole library?
哎，你知道吗，有许多你不知道的事情。我可以从网络上获取许多信息，只要轻轻一点。告诉我，难道这种方式没有查字典或者甚至要搜遍整个图书馆来得方便吗？
A:If you spend most of the time obsorbing knowledge, i won't say anything, i just hope you can balance your work and play.
如果你多花点时间在网上学东西的话，我不会说什么。我只是希望你能够合理的分配学习与娱乐的时间
B:Ok, i will，mom
好的，我会的，妈
以上对话：
Succinctly, if you have multiple computers in an office (more than three) and you don't have a network, you're going to end up losing a fair bit of money.

How many printers do you have at the moment? You could simply network the computers and share them.
Do you use the internet? How do the people without internet access on their computers work as effectively as those who do? It's certainly not cost-effective to get a separate internet connection for every employee.

I have recently spent quite a lot of time trying to get a 5-user office networked. Without a network, the users were spending an incredible amount of time ferrying documents to and from the computer with a printer, and the CEO of the business spent 90% of her time answering email, because the other users didn't have internet. Since they have been networked, with a server, the productivity has spiked. They have one printer for five people; they can log into any computer in the office and it will behave in generally the same manner--desktop wallpaper, files, et cetera are all centralized.

With proper security and backup protocols in place, a network's benefits far, far outweigh the disadvantages.

If you are not convinced of this, it is probably a very good idea to have a reasonably reputable (i.e. sueable in case something goes wrong) firm come in and set up your systems for you.

Response times are directly dependent on the hardware you are running. If you run a server on old hardware, then yes, you will have poor response times. However, I administered a lab where 25 computers accessed a 10 year old server, which was used for hosting a domain for a desktop publishing course. Not the most complex job for a server, but fairly taxing for one that old. Still, even at peak usage periods (login) the server was fairly prompt. There was no lost time as a result.
Single points of failure is, of course, an issue with a server system. Hence the reason that server hardware is significantly more expensive than desktop hardware. However, with a properly implemented backup system, you won't lose data and will lose only a very small amount of time in case of server failure. You are far more likely to lose a client computer than a server computer, if it is set up correctly.
Complexity is insignificant--if you are not sure what to do, you will simply need to outsource your IT, or take several courses to brush up on your skills. Outsourcing is recommended.
Costs are, however, significant. That being said, it's an initial investment that will significantly improve your business communications and productivity. Generally, the more you spend on hardware, the better it gets--up to a point, which is when you start purchasing hardware that is overpowered for your system.
Staff training ought to be negligible--the network should be all but invisible to them.
LAN security issues are, of course, a major issue. It is worthy of thousands of articles and books, so I cannot really discuss it here. Again, it is a combination of proper training and implementing it properly. Remember, if your data is going to be compromised, it will be compromised. Computers are only as secure as humans can make them, and if a human designed it, a human can break it.
2：Files can be stored on a central computer (the file server) allowing data to be shared throughout an organisation.
Files can be backed up more easily when they are all on a central fileserver rather than when they are scattered across a number of independent workstations.
Networks also allow security to be established, ensuring that the network users may only have access to certain files and applications.
Software and resources can be centrally managed.
Network versions of software often allow for their speedy installation on workstations from the file server.
Expensive devices such as laser printers or scanners can be shared.
Users can access their files from any workstation