Network Definition

Network

Two or more devices communicating

Router
Joins two or more Network's together.

LAN

Local Area Network

Multiple Devices connected via one Switch/Router

i.e. Classroom, Small building society

HAN
Home Area Network

WAN

Wide Area Network

Two or more LAN's connected together
This Network can b spread through cities

MAN

Metropolitan Area Network

Two or more WAN's connected together
This Network can be spread through countries.

PAN
Personal Area Network
Bluetooth

SAN
Storage Area Network
Network providing storage via Disk Arrays, Tape Drives