In this chapter students will learn about:
  • Types of networks: Ring, Bus, Star and Tree ....
  • Local Area Networks, Wide Area Networks and Wireless LANs
  • Network devices - Modems, Hubs and Switches, Routers and Bridges
  • The internet - web browsers and internet services providers (ISPs)
  • Intranets
  • Network security - user IDs, passwords, encryption and authentication techniques
  • Communications - fax, e-mail, video conferencing and voice over internet protocol (VOIP).

Introduction - Most computers systems are now connected together in some way to form what is known as a network. This ranges from the basic school/home network of only a few computers (often set up to share resources such as printers or software) to large networks such as the internet which effectively allows any computer connected to it to communicate with any other computer similarly connected.
This chapter considers the types of networks that exist and the many features that are available because of networking.

Common types of network
Network devices
The internet
Network Security
Communication Methods