Networks

A network is made of Communication Devices connected by channels in different locations

Communication Devices	Channels
PC/Desktop                Servers Network Card              SATNAV(GPS) Modem                         Router Printer                           Laptop TV                                 Wifi Access Point Tablet                            Mobile Phone	Radio waves Ethernet cable HDMI cable Infra-red Microwaves Twisted copper wires (Telephone) Optical Fibre cables

LAN: Local Area Network- is limited to a geographical area, for example, our school.

 

Wide Area Network- reaches over a large geographical area