WHAT ARE THE TYPES OF NETWORKS AND ITS EXPLANATION

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 A computer network may span any account of geographical area. It can be on a table, in a room, in a building, in a city, in a country , across continents or around the world. On the basis of the area covered, computer networks are classified as:

  • PAN - Personal Area Network 
  • LAN - Local Area Network
  • MAN - Metropolitan Area Network
  • WAN - Wide Area Network

PERSONAL AREA NETWORK

PAN is a network of communicating devices (computer, mobile, tablet, printer, etc.) in the proximity of an individual. It can cover an area of a radius with few meters.


When we transfer songs from one cell phone to another or from a PC to an MP3 player, a PAN is set between the two. PAN can be set up using guided media (USB) or unguided media (bluetooth, infrared)

LOCAL AREA NETWORK

LAN is a network of computing and communicating devices in a room, building, or campus. It can cover an area of radius with a few meters to few kilometers. A networked office building can contain a few small LANs (like some schools have independent LANs in each computer lab).  Occasionally a LAN can span a group of nearby buildings.



In addition to operating in a limited space, a LAN is owned, controlled and managed by a single person or an organisation. LAN can be set up using wired media (UTP cables, coaxial cables, etc.) or wireless media (infrared, radio waves, etc.) If a LAN is a setup using unguided media, it is known as Wireless LAN.


METROPOLITAN AREA NETWORK 

MAN is a network of computing and communicating devices within a city. It can cover an area of a few kilometers to few hundred kilometers radius. MAN is usually formed by interconnecting a number of LANs and individual computers. All types of communication media are used to set up a MAN. MAN is typically owned and operated by single entity such as a government body or a large corporation.


WIDE AREA NETWORK

WAN is a network of computing and communicating devices crossing the limits of a city, country or continent. It can cover an area of over hundreds of the meters in radius. WAN usually contain a number a number of interconnected individual computers, LANs, MANs and maybe other WANs. All types of communication method (guided and unguided) are used to set up a WAN. The best known example of a WAN is the Internet. Internet is considered as the largest WAN  in the world. A network of ATMs, banks, government offices, international organisations, offices, etc. spread over a country, continent or covering many continents are examples of WAN.

 



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