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Wednesday, August 15, 2018

What is Network? how works Network?

What is Network? 


Network 

A computer network is a set of devices interconnected with each other through a medium, which exchange information and share resources. Basically, communication within a computer network is a process in which there are two well-defined roles for connected devices, transmitter and receiver, which are assumed and alternating at different moments of time.


Types of Network. 


LAN (Local Area Network)

local area network it is a network whose range of scope is limited to a relatively small area, such as a room, a building, etc. It does not integrate means of public use.

Specialty


  • It is limited to small geographical areas.
  • it's ownership is private. 
  • This network's data transmission is high speed.

MAN (Metropolitan Area Network) 

metropolitan area network it is a high-speed network that covers a wider geographic area than a campus, but still limited.

specialty 


  •  Its geography area is largely, limited to such as town and city.
  • it's owownersh is private and public. 
  • Data transmission speed is medium. 



WAN (Wide Area Network)



wide area network it extends over a large geographical area using unusual means of communication, such as satellites, interoceanic cables, etc. Use public media.

specialty

  • Large geographical areas such as two countries can connect to this network.
  • it's ownership is private and public.
  • data transmission speed slow. 


These things are used to create a network:

  1. Hub
  2. Repeaters
  3. Swithces
  4. Routers
  5. Getaways

History of Network 

The network started in 1960, Which was called ARPANET. it means Advance Research Project Agency Network. Its main purpose was to connect the remote job and terminal together.
Today it has become the world's largest network, which we call the Internet.

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