What is computer Networking and Types of Network ?

What Is a Computer Network?

A group of computers which are connected to each other and follow similar usage protocols for the purpose of sharing information and having communications provided by the networking nodes is called a Computer Network.

Types of Networks :

There are four types of networks :

1.PAN ( Personal Area Network )

2.LAN ( Local Area Network )

3.MAN ( Metropolitan Area Network)

4.WAN ( Wide Area Network )

1.PAN (Personal Area Network) -

• The smallest computer network.

• Devices may be connected through Bluetooth or other infra-red enables device.

• It has a connectivity range of upto 10 metre

• It covers an area of upto 30 feet.

• Personal devices belonging to a single person can be connected to each other using PAN.

2.LAN (Local Area Network) –

• System 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 .

3.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.

4.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.

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