This is a Secondary 1 N(T) lesson

2. 2.1 What is a Network? Simple Definition: It is where computers or devices exchange data with one another. Another definition: It is any collection of independent computers or devices that communicate with one another over a shared network medium.

3. 2.2 Components of a Network? A network is simply a group of devices that are inter-connected. Some examples of these devices are: • Computers • Scanners • Printers • Modems

4. 2.2 Components of a Network? The function of a network is to pass information between devices that are connected. The network may be formed by using: • Copper cables • Radio waves • Fibre-optic cables • Infra-red rays Share printers and servers Share resources Share files and documents Share information E-mail, chat Communicate Examples Purpose

9. 2.2 The Internet Definition: It is a system of networks that are linked worldwide and facilitate data and communication services. Examples of communication services include file transfer, electronic mail (E-mail) and World Wide Web. Internet

10. 2.2 The Internet Definition: It is a network that contains Internet-type tools, but available only within an organisation. Intranet