Computer network

What is Computer Network ?

A computer network or data network is a telecommunications network which allows system or computers to exchange data from sender to receiver.  In computer networks, networked computing devices exchange data with each other using a data link. The connections between nodes are established using connection oriented or connection less services, as if we can using a wire, cable or wireless media, Such as internet.

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Types of Networks

Mainly there are 3 types of Networks

  1. LAN
  2. MAN
  3. WAN


1) LAN

LAN stands for Local area Network, It is a network of Single building or area of up to few kilometers. It is smallest area network as compared to WAN and MAN

Example : Ethernet connection. Ethernet can be connected only in small area network.


2) MAN

MAN stands for Metropolitan area network. It is network which cover more area then LAN , like a city. It is larger than LAN but smaller than WAN.

Example : Cable TV


3) WAN

WAN stands for Wide area network. It covers full country or continent, It is too wide and therefore it is called Wide area Networks. It is the biggest among all LAN and WAN.

Example : Internet




Topologies are nothing but the layout of the network. The structure or layout in which the computers or the systems are connected is called Network Topologies. There are many types of topologies depending on the layout of the network. Example : In star topology, networks are connected in a star like structure and likewise in ring and other similar topologies. This topologies show how actually the networking is done from sender to receiver.

To understand this topologies,

Let us consider a figure to see how the networks are connected.


computer network

Network topologies

Apart from this, Networking has many more topologies also, but these are the main of them.

We will discuss more about networking in next articles also. Stay tuned. Do comment on how was the article and if you have any doubt or Quires regarding this. We will solve it out.

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