WHAT IS A COMPUTER NETWORK?



Definition of computer Network
   A computer network is a set of computers connected together. 


   A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is connection to the Internet. Other shared resources can include a printer or a file server.


ADVANTAGES OF NETWORKING

1.Reduce Cost
2.Increased efficiency

3.Economical

4.More productivity 

5.Increased access to communication channels 

6.More efficient patching software



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DISADVANTAGES OF NETWORKING

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1.NETWORK FAILURE
                                                                       
2.SERVER ERROR
                                                                       
3.PRONE TO HACKERS
                                                                    
4.PRONE TO VIRUS
                                                                      
5.DISTANCE/ LOCATION PROBLEM

*NETWORK MEDIA TYPES
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1.WIRED NETWORK

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2.WIRELESS NETWORK

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                      TYPES OF NETWORK

PAN (Personal Area Network)
   -A personal area network, or PAN, is a computer network that enables communication between computer devices near a person. PANs can be wired, such as USB or FireWire, or they can be wireless, such as infrared, ZigBee, Bluetooth and ultrawideband, or UWB.

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PAN

LAN (Local Area Network)
A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.[1] By contrast, a wide area network (WAN) not only covers a larger geographic distance, but also generally involves leased telecommunication circuits.



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LAN



MAN (Metropolitan Area Network)
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MAN
A metropolitan area network (MAN) is a network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network (LAN) but smaller than the area covered by a wide area network (WAN).
WAN (Wired Area Network)


A wide area network (WAN) is a telecommunications network that extends over a large geographical area for the primary purpose of computer networking.



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WAN


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