WHAT ARE THE TYPES OF CABLE?

CABLE

What is Cable?

   It is a medium that connects computer in a network.

  

  

      
TYPES OF CABLE

   1. TWISTED PAIR

     Is the most common type of cable. Have eight individual copper wires bundled together and covered with an insulating material.

 A.      Shielded Twisted Pair (STP)

STP

It is often used in “noisy” environments where a shield of metallic foil is wrapped around each of the wire pairs, with an additional overall shielding to protect against excessive electromagnetic  interference.

      B.         Unshielded Twisted Pair (STP)

It is the most 

common form 

of twisted pair 

wiring. It is less expensive 

and easier to work with than STP.

UTP

       UTP cable is a 100 ohm copper cable that consists of 2 to 1800 unshielded twisted pairs surrounded by an outer jacket. They have no metallic shield. This makes the cable small in diameter but unprotected against electrical interference. The twist helps to improve its immunity to electrical noise and EMI.

     2. COAXIAL CABLE

  It is the standard media used by cable TV operators. It consists of a plastic insulator that separates the solid copper inner conductor and the woven, copper braid outer conductor.  

COAXIAL CABLE

          3. FIBER-OPTIC CABLE

         It has a reflective coating that allows light beams to travel without outer interference.

     

       Difference between STRAIGHT THROUGH CABLE and CROSSOVER CABLE

Straight Through it is used to connect different type of devices.  

For Example:

 Computer - Switch

 Switch - Computer

A straight through cable is a type of twisted pair cable that is used in local area networks to connect a computer to a network hub such as a router. This type of cable is also sometimes called a patch cable and is an alternative to wireless connections where one or more computers access a router through a wireless signal. On a straight through cable, the wired pins match. Straight through cable use one wiring standard: both ends use T568A wiring standard or both ends use T568B wiring standard. 

    Crossover it is used to connect same type of devices.

For Example:

Computer - Computer

Switch - Switch

       Crossover cable is a type of Ethernet cable used to connect computing devices together directly. Unlike straight through cable, crossover cables use two different wiringstandards: one end uses the T568A wiring standard, and the other end uses the T568B wiring standard.