Computer networking is such a system where two or more computer are connected together. The method of connecting computers or other devices by cable, Modem, satellite etc is called computer network.
The computer which gives service to another computer within the network is called server. All the computers connected in a network is called node.
Different types of network are used in different country for the purpose of communication, information exchange, email communication, learning, managing business etc. The main objective of network is to share information, software, hardware resources etc.
According to the ownership, there are two types of computer networking.
The network which has an ownership by a person or organization is called private network. This computer network is a controlled a person and for this general people can’t use this network.
There is less traffic problem in private computer networking system. For this, it needs a few times to exchange information. Private bank, security house are two of its very common example.
Public computer network is not under a person or organization. But it is also controlled by a large organization. Anyone can use this computer networking system by giving some fee. Sometimes it shows traffic problem and takes more time to exchange information.
Types of computer network according to working type
According to the type of work, there are three types of computer networking.
Peer to peer network
In peer to peer computer networking system every PC have to do same type of work here. Every computer has the same function for resource sharing and has same importance as there are no specific server in peer-to-peer computer network. Every computer is responsible for the security of its data.
In client-server computer networking system data is stored and secured centrally as well as running various applications and managing the network is going through a centralized process.
Here, one computer stores resource where other use these resources. The computer which stores all data is called server and others are called client. Server computer can manage all data as it stores all data.
Hybrid computer network
Hybrid computer networking system consists of peer-to-peer network and client-server network which results in a high-speed data sharing service. Today many organizations and institutions are using this network and its popularity is increasing day by day.
Types of computer networking according to geographical location
According to geographical location, there are mainly six types of computer networking.
PAN is the computer network where we can connect our daily used information technology devices in a limited area less than 10-meter distance.
Here, we can connect desktop, laptop, PDA, Smartphones, printer, camera etc by wireless or USB medium. Our daily work will be easier if we can create such network in our home or offices.
When two or more computer or other devices are connected together in range of a limited area then this type of computer networking is called local area network. It can be consisting of all the computer inside the same building.
In LAN computer network, it provides range of maximum 1 kilometer. But we can make the range at about 10 kilometer using repeater.
In most cases LAN uses Star, Ring or Broadcast network topology and the transmission medium is normally by co-axial cable or optic fiber cable.
All the devices used in LAN is not more expensive. Only one man is enough to manage LAN computer network. Generally, we use LAN in our offices or institutions.
When a network spreads inside the whole country or world then it is said as a Wide Area Network. The biggest phase of WAN computer networking is internet.
It consists of many LAN situated in enough distance from one another. WAN is situated in a wide geographical area and more complex to set up. Enterprise is also one kind of WAN.
CAN stands for Campus Area Network. The computer network which is created inside a university or college campus, offices or factories is called CAN. Actually, CAN consists of all departmental local area network of a campus.
MAN which stands for Metropolitan Area Network actually consists of some LAN. When a network spreads in a city or such big area then it is said Metropolitan Area Network.
In other words when a computer networking system consists of some LAN of a city or town is called MAN. MAN is more complex to design then LAN.
The extended version of WAN is called Global Area Network (GAN). It spreads all over the world. GAN is developed by various groups. It is also more complex and expensive to establish which consists of some LAN, WAN as well as satellites.
Functions of computer network
Today in this technological era, computer network has much function to make our life easy and comfortable. Some of the main functions of computer networking is given bellow.
Actually computer networking is very important to work together with stuff or friends. It is becoming a very important topics day by day. We can not think a single office without computer network today.
However, I have tell everything about computer network today in this post. Hope guys, you have got some important information by reading this post.
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