Computer network is a form of electronic and digital communication that permits nodes to share resources. The network is of a small or a large number of computers which are connected with communication links at different locations. The connections between nodes are established by using cable media or wireless media. Depending upon the operational area of the network, it may be classified as under.
- Local Area Network (LAN)
- Wide Area Network (WAN)
Wide Area Network:
It is used to connect a wider geographical area like different cities or even different countries.
These communications links are established through telephone lines or microwave links via satellite.