Graphics card, monitor and other peripherals Essay

Published: 2020-02-18 00:00:52
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Category: Graphics card

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As you can see from the about table, even the simplest server can cost a lot of money, the most expensive part of the server is the Uninterruptible Power Supply, but this would not need to be purchased every time a new server is bought. Database Servers The database servers hold information on different things in the department. The graduate school of education use them for holding information on students and staff, like addresses and telephone numbers. It is much more effective than using paper to hold data.

The database servers are Macintosh. They are often seen as expensive, useless machines, but the Macintosh computers are much more powerful than a conventional PC, and their main drawback is that it is difficult to obtain software for them, and no pc software is compatible with them. Networking The university network is quite a big system, and could probably be described as a Wide Area Network, because of its size, although it is really just a very large Local Area Network.

Here is a small network diagram showing how the Queens Network works. Hopefully from this very simple diagram you can see how big the university really is, and how much it costs for electricity alone every year. Between all the universities in the United Kingdom there is a shared Internet connection. This is a fibre optic system. There is a slight difference between using a fibre and using copper cables. One small fibre can carry up to 1,900 phone calls. This is quite a big difference compared to 30 over one copper cable.

This means that the computer users in the University will have very fast Internet access, and between other universities, it can be possible to download a full CDs worth of data (700MB) in around 10 seconds, and that isnt with just one user using the network at that time. The speed of JANET is quite hard to measure with complete accuracy, and it is changing in speed every day. Between departments there are also fibre optic cables, as this allows more data to be transferred.

Once you get into a department the fibre is brought into a hub, and from the hub to each computer you have a copper cable. This is maybe not the most efficient way, but it is much cheaper than having a fibre optic system the whole way around the department. Looking at the diagram above you will see that the Graduate School of Education is a small part of the university network. Here is a slightly more detailed diagram of the network in this particular section:

The network is too large to show in much more detail than shown above. There are roughly 150 computers in this one department alone, and across campus there is anything between 2000-6000 computers connected to the network. They are all connected centrally at the main Queens hub, so from anywhere on campus you can find a route to anywhere else. Also, if for some reason the main hub failed, departments would still be able to send files to each other, as long as it did not need to leave the department.

Workstations and Software Because the department is large, it may be difficult to find two computers that are the same in hardware specification. Generally they are all normal, domestic computers, although the computer lab has desktop cases instead of ATX, This does not really affect how they work. Data can be shared between all the computers using the public directories, although only staffs have access to these. All computers are connected to the network using 3Com network cards, running on 10 Mega bits / second.

This is the only real speed limitation of the network. All workstations have the Microsoft Office Suite which is part of the Microsoft Office Campus Agreement, and FrontPage and Publisher have a separate license for certain departments, as these are not part of the campus agreement as a whole. They also have a copy of Symantec Antivirus, which is updated through the Symantec server, and this provides up to date virus protection. Staff have access to Adobe PageMaker 6. 5 and Macromedia Dreamweaver.

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