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Dec 14, 2018

Computer Hardware Networking & Types of Networking

What is a Computer Network?
A computer network is a network of computers connected together or grouped together so as to meet a common objective or for the purpose of sharing files and resources between the computers.

It is defined as a group of two or more computers linked together in an ordered or unordered fashion. It is the network of interconnected computers and there can be two or many computers connected together in a computer network.

computer network wan network diagram examples local area network
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More precisely, it can be defined as the network of two or more computers that are connected with one another for the purpose of communicating data electronically. 

A computer network can be of 2 types -
1) Simple Computer Network and
2)Complex Computer Network.
Simple Computer Network:
A group of two computers connected with each other for sharing resources and information is called a Simple Computer Network.

Complex Computer Network:
A group of more than two computers connected with each other for sharing resources and information is called a Complex Computer Network.

characteristics of computer network wan network definition wide area network example computer networking
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The term Computer Networking is used to define the networking activities done within a Computer Network. It is a term used when certain activities are performed within a network such as sharing files and resources for specific purposes.
Types of Computer Network
There are many types of Computer Network defined according to the size and area they cover.  Yes, Computer Networks is based on the Geographical span and the number of computers in the network.
There are many types of Computer Networks such as LAN, MAN, WAN, PAN, CAN, GAN, Internet, Internet, Intranet, Extranet, VPN, Client/Server, Workgroup and HomeGroup.

But here we will discuss in detail only about the major and important computer networks that are used primarily all over the world. These computer networks are as follows:
It stands for Large Area Network an is the most common network used for a small geographical area such as home, building, office, etc. Computers are placed relatively close in LAN. Computers in a LAN Network need no cables or special devices to connect each other as they span in a small area close to each other. In a LAN Network, the computers are geographically close together and at a small distance.

MAN stands for Metropolitan Area Network.  It is a network which connects two or more LAN networks within the same city. When there are larger distances i.e. In a scenario when computers at larger distances need to be connected to each other, then MAN is used instead of LAN. It is larger than LAN but smaller than WAN. It makes the use of special devices and cables to connect the LANs.

wide area network definition computer networking school local and wide area networks
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WAN stands for Wide Area Network. It is a computer network which spans over a large geographical area such as state, region, country etc. WANs are used when we need to connect two or more LANs or MANs which are located at very far off distance from each other. Again, to provide connectivity, WAN makes the use of special devices, cables, and technologies, etc.

Internet - the almighty term is the largest computer network ever created in history. It connects thousands and thousands of networks as well as other computing devices across the globe. It is the most advanced technology but also the most insecure network. It is because anyone can connect to it, hence making it unsafe and insecure. 
wide area network diagram what is the difference between lan and wan latest network technology
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The small ‘i’ on the internet has a special meaning. This is a term coined to represent a group of the network which is connected with the external network through a gateway.

So, these were basically the most important networks that are majorly used all over the world to connect computers together.