Nowadays almost every computer we encounter is part of a complex network of computers. Suppose that when a laptop or computer that used to stand on its own (stand alone) then we add an USB Modem that is connected to the internet, then our computer has been connected and are part of a vast network of WAN (Wide Area Network).
In the following article we will try to get to know the understanding of computer networks, the benefits and the risks of computer networks and computer networks Division based on broad areas namely PENAN, LAN, MAN and WAN.
What is a Computer Network?
In a simple sense of computer networks is the relationship between two or more computer systems through communication media to perform data communication with each other.
The Benefits Of Computer Networks:
The main benefit we can feel from the formation of computer networks is the ability to share resources (resource sharing) at our disposal such as the wearing of a printer, hard disk, CD ROM and other peripherial together, Exchange data (file sharing) and communicate with one another (emails, chat up video conference).
Disadvantages Of Computer Networks:
In fact the term may not be exact but a consequence of the loss of connection between our computer systems to the network this computer such as security issues (security) at both the resource usage of the various interested parties not authorized or security issues (virus threats) on the data that is exchanged.
Regardless of the various risks that we have to face, it's currently connected to the computer or is part of a network computer is a thing that could not be avoided.
Types Of Computer Networks
Types of computer networks based on the coverage area can be differentiated into several types, namely PENAN, LAN, MAN and WAN.
1. PAN (Personal Area Network)
At the moment we are connecting the computer or other device such as mobile phone, PDA, keyboard, mouse, headset, wireless, camera and other equipment which are close enough (4-6 meters) then we have established a Personal Area Network. The most important thing is that in this our own PAN control (authoritas) on all the equipment. In addition to the dihubungkn directly to the computer via the USB port or FireWire, PAN also frequently formed with the wireless technology like bluetooth, Infrared or WIFI.
2. LAN (Local Area Network)
This is a very popular computer network. LAN (Local Area Network) is a computer network that covers a small area; as the campus computer network, building, Office, in the home and at school.
3. MAN (Metropolitan Area Network)
Metropolitan Area Network (MAN) is a network in a city with high-speed data transfer between different locations such as offices, campuses, Government, and so on. MAN is a composite network of some LAN. The reach of this MAN ranged from 10 to 50 km
4. WAN (Wide Area Network)
WAN (Wide Area Network) is a computer network that covers a large area, for example, that computer networks between regions, cities or even countries, or can be defined also as computer networks require routers and public communications channels. The Internet is an example of a WAN network.
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