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Media Of Communication Part 1

 Media Of Communication

Communication Channel:-Medium of communication can broadly categorized into two types:-
 1.Guided Media: - Guided media are those, which provide a physical connection from one device to another device. Like:-(a)Ethernet Cable: - Ethernet is a data link technology used in local Area network. Such cable can transmit data speed of 100-1000 mbps.
.Ethernet Cable was invented by an electrical Engineer of U.S. named Robert Metcalf.
.Ethernet Cable connected to Ethernet port with the help of “RJ45” socket.

Ethernet Cable can be categorized into:-
 1.Straight through Ethernet Cable:- It is used to connect different devices.
Like:- Computer to hub
       Computer to switch
       Computer to router
It has same order of color form left to right.


2.Ethernet Crossover Cable:- It is used to connect same device.
Like:- computer to computer
        Router to router 
        Hub to hub
In the cable inside the main covering 1st with 3rd and 2nd with 6th wire crossed from left

   (b)Co-axial Cable:- It acts as an efficient electrical transmission media. It consist of a single line of conductor surrounded by insulator layer and a conductive shield over it.

  •   It can transmit upto 100 mbps.
  •   It is used by the Cable T.V. operator.



 (c)Fiber optics:- Fiber optic cable is made fine stands of silicon glass fiber and is coated with a refractive surface. Data are transferred through electromagnetic waves.

  •  It can support over 30,000 telephone lines at a time. Transmission rate upto 10Gbps.

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