LAN [local area network]
- LAN stands for local area network.
- LAN is the collection of computers and other devices that are usually connected together by cables.
- This network is established in a building an organization or a small city.
- In this network main computer is called server and all other computers are called clients connected with the server.
- Local Area network offers a mean of polling network resources and information between a number of users.
Advantages of LAN:
- Sharing of resources i.e., disk storage, printer, and server.
- Sharing of information held on disk drives that are accessible by all users of the network
- Sharing of an installed network.
- Ability to communicate with other users on the network. this is very useful in case when the computers are distributed around a large building.
- High-speed access to resources.
Disadvantages of LAN:
- The main disadvantage o LAN is that it covers a very limited area.
WAN [wide area network]
- WAN stands for wide area network.
- WAN has no geographical limitation
- A Wide Area Network can be between two cities, countries or two continents or in the whole world.
- The great example of WAN is internet which covers the whole world.
- The use of WAN has increased over the past few years.
Advantages of WAN:
- WAN connects the local area networks.
- WAN reduced the connecting charges and using of networks.
- In WAN for faster transmission of text and graphics or video,s compression techniques are used.
- Financial transaction or data interchange form companies to companies.
MAN [Metropolitan area network]
- MAN stand for Metropolitan area network.
- MAN is a network that is spread over the entire big city or more than one city.
- A MAN is larger than local intranets or extranets but smaller in range than WAN.
- An example of MAN may be a network established in Karachi city that connects different LANs
- A Metropolitan Area network enlarges to become a nationwide network for example if the different cities of Pakistan (whether large or small) are connected together then heir connection will make a MAN across the entire country.