what is network?

 Network

• A computer network is basically the collection of two or more computer for sharing resources, ideas, exchanging of files etc. 
• It is also an electronic communication media for transferring files from one computer to another computer using wire or without using wire. 
  
  
  
  
  
  LAN
• Expanded LAN is Local area Network;
• Normally it connected to a small area like personal office, chamber etc.
• It is a very small network in comparison to other networks.
• The data transfer rate is faster near about 100 mbps.
• Different types of networking devices like modem, hub, switch are used in LAN.

        MAN

• Expanded MAN is Metropolitan Area Network.
• It is bigger than LAN.
• It covers to a limited geographical area.
• It is collection of different LANs.
• It provides high data transfer rate normally from 100mbps to 512mbps.
• Different types of devices like switch, router, repeater are used in MAN.

        WAN

• It stands for Wide area network.
• It is a huge network.
• It covers to a large geographical area in the world.
• It has no limit.
• It is available anywhere or any time in the world.
• It is the network of networks.
• Example Internet. 

           PAN

• Personal Area Network
• It is otherwise called HAN(home area network).
• It also a LAN connection.
• The connection which a personal user uses internet in his/her home is called PAN.
• The data transfer is based on as per requirement of the use.
• It connect mobile, laptop, Bluetooth devices etc.