Wednesday 28 March 2012

What is Computer Networking? 
 •is connecting a computer with other computers or other devices to enable them to communicate with each other

Computer Networking
•LAN 

Local Area Network
•MAN 

Metropolitan Area Network
•WAN 

Wide Area Network  

Networking components can be categorise into

•Terminals, Workstations, Computers, and other devices (end nodes)
•Transmission Media ( for transmitting data and control signals)

•Network electronics ( intermediate devices for routing data from source to destination)
•Software to control data transmission

•Network Architecture Standards (Standards to enable devices made by different companies to work/communicate with each other.



TRANSMISSON MEDIA
•The physical media used to transmit data in a networked environment.
•To Transmit signal / electrical pulse through a medium.
•2 types :  bounded/guided or unbounded/unguided



Bounded Media   
1.Twisted pair wire
-type of wiring in which two conductors (forward and return circuit conductors a) twisted together for the purpose of canceling the electromagnetic interference (EMI) from external sources
2.Co-axial cable
3.Fiber optic cables 
 Unbounded Media (air or a vacuum)

1.AM and FM radio
-FM stands for "frequency modulation
-AM stands for "amplitude modulation," so it is not difficult to understand that our differences are based on radio caragelombang modulate, or volatility.
2.TV broadcasting
3.Satellite communication
4.Microwave radio
5.Infrared signals and bluetooth
-infrared is a communication system based on infrared light is used for short range communications applications line of sight or point-to-point, while 
-Bluetooth is a low cost, low power, short-range radio technology was originally developed as a replacement cable to connect the various perantisepertitelefon mobile, headset, PDAs and laptops.
6.Bridge
-A network bridge connect multiple network segment.
7.Routers
-translates information from one network to another;it is similar to a superintelligent bridge.
8.Gateway
-A network node equipped for interfacing with another network that uses different protocol.



  









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