WHAT IS COMPUTER NETWORKING?
The group of interconnected autonomus computers is called computer networking.
Types of Computer Networks
There are five main types of Computer Networks:
- LAN (Local Area Network) –
- Systems connected in a small network like in a building or a small office
- It is inexpensive
- It uses Ethernet or Token-ring technology
- Two or more personal computers can be connected through wires or cables acting as nodes
- Transfer of data is fast and is highly score
- PAN (Personal Area Network) –
- The smallest computer network
- Devices may be connected through Bluetooth or other infra-red enables devices
- It has a connectivity range of upto 10 metres
- It covers an area of upto 30 feet
- Personal devices belonging to a single person can be connected to each other using PAN
- MAN (Metropolitan Area Network) –
- A network that can be connected within a city, for example, cable TV Connection
- It can be in the form of Ethernet, ATM, Token-ring and FDDI
- It has a higher range
- This type of network can be used to connect citizens with the various Organisations
- WAN (Wide Area Network) –
- A network which covers over a country or a larger range of people
- Telephonic lines are also connected through WAN
- Internet is the biggest WAN in the world
- Mostly used by Government Organisations to manage data and information
- VPN (Virtual Private Network): –
- A network which is constructed by using public wires to connect to a private network
- There are a number of systems which enable you to create networks using the Internet as a medium for transporting data
- These systems use encryptions and other security mechanisms to ensure only authorised users can access
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