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GN51 Information Technology For Business

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GN51 Information Technology For Business

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Course Code: GN51
University: Coventry University

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Country: United Kingdom

1. You have decided to buy parts and build your own personal computer. At the minimum, what are the components that you would need for this device to be considered a computer?2. What are the most important features to consider before purchasing a PC?3. Explain the notions of WAN, LAN, MAN and PAN.4. What are the technical advantages of optical fibres over other communications media?5. Wi-Fi is all around us. Is there any downside to its pervasiveness?

1. Components of a computer

Input devices- These are devices which enter data into the system of a computer such as keyboard.
Output devices- They display data or information from the processor such as printers.
Memory- This component stores all data or instructions temporarily in ram or permanently in hard disks.
Arithmetic and logic unit- This is where calculations and logic operations are done, and decision making too.
Control unit- This is the controller of all operations done in the computer (Christophersen and Konradt 2011).

2. Features before purchasing a PC

RAM and hard disk- One should ensure that the memory of the PC has enough space for efficiency during operations.
Processor- One should ensure that it is good, not cheap because it can fail when you overload.
Cost- One should purchase a PC with resources which are within their ability.
Size- One should purchase a PC which is portable.
Operating system- One should purchase a PC which has an operating system with great features (Christophersen and Konradt 2011).

3. WAN is a wide area network that interconnects several networks and covers a wide geographical area like the entire world which allows users to share and access information.
LAN is a local area network that covers a small geographical area like within an organization or a room. They can be connected with other LANs by cables or waves.
MAN is a metropolitan area network that is used within a bigger locality such as a city to share and access information.
PAN is a personal area network that covers a small area of about 10 meters and is connected with user’s devices with either wire or wireless (Newton 2011).
4.Technical advantages

It is efficient as it has a greater bandwidth.
It is safer as it is not affected by lighting.
It is faster due to its higher speed.
It is thinner hence easy to spread and configure (Newton 2011).

5. Downsides of Wi-Fi

The speed might be slower because most people will be accessing at the same time.
The security might not be safe hence some encryption is needed to secure information and technologies too.
It may not be reliable mostly if wireless connected.
It is costly for a wide range because of need to purchase repeaters Newton 2011).

Christophersen, T. and Konradt, U., 2011. Reliability, validity, and sensitivity of a single-item measure of online store usability. International Journal of Human-Computer Studies, 69(4), pp.269-280.
Newton, H., 2011. Newton’s Telecom Dictionary: Telecommunications, Networking, Information Technologies, The Internet, Wired, Wireless, Satellites and Fiber. Flatiron Publishing.

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