Traditional Computer Based Technologies、
The C part of ICT refers to the communication of data by electronic means, usually over some distance. This is often achieved via networks of sending and receiving equipment, wires and satellite links.
The technologies involved in communication tend to be complex.
You certainly don't need to understand them for your ICT course.
However, there are aspects of digital communications that you needs to be aware of.
These relate primarily to the types of network and the ways of connecting to the Internet.
Let's look at these two briefly (further revision notes provide much more detail to support your study).
Internal networks
Usually referred to as a local area network (LAN), this involves linking a number of hardware items (input and output devices plus computer processing) together within an office or building.
The aim of a LAN is to be able to share hardware facilities such as printers or scanners, software applications and data. This type of network is invaluable in the office environment where colleagues need to have access to common data or programmes.
External networks
Often you need to communicate with someone outside your internal network, in this case you will need to be part of a Wide Area Network (WAN). The Internet is the ultimate WAN - it is a vast network of networks.
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