How can we help?

You can also find more resources in our Help Center.


LANs, WANs and the Internet
LAN - Local Area Network
WAN - Wide Area Network
Transmission Media = transfer data between computers
copper cable, optical fibre, wireless, coaxial cable
Bandwidth = 10Mbps to 100Mbps
Function = Share files send emails share hardware devices

Covers the size of a building or room
Transmission Media = telecommunication links to connect computers
Bandwidth = 56Kbps to 10Mbps
Function = global communication through emails and video conferencing

Covers the size of a city or country
The Internet
Transmission Media = uses transmission media which include public tele[hones and wireless connections
Bandwidth = 10Mbps
Function = Search for information buy and sell items and download software and much more

Global network of individual computers and networks
Client Server
Client = This is a workstation computer that accesses the network resources provided by the servers
Server = A powerful computer that provides a network resource. A file server stores and manages access to application software and the network user's files