Sunday, 29 April 2012

Week 5 - Cabling

Ok its already our fifth lecture. There are so many things that I learnt before. Today we learnt new thing that is cabling.


What is cabling??

Cable is the device that information usually moves from one network to the other network.

There are 4 types of cable that we had learnt:

UTP cable (unshielded twisted pair)

consists of two unshielded wires twisted around each other
low cost
used extensively for local-area networks (LANs) and telephone connections

STP cable (shielded twisted pair)

each of the two copper wires that are twisted together are coated with an insulating coating that functions as a ground for the wires
extra covering in shielded twisted pair wiring protects the transmission line from electromagnetic interference
often is used in Ethernet networks

Co – axial cable

type of wire that consists of a center wire surrounded by insulation and then a grounded shield of braided wire
shield minimizes electrical and radio frequency interference.
used by the cable television industry and is also widely used for computer networks, such as Ethernet
much less susceptible to interference and can carry much more data

Fibre optic cable

consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves
have a much greater bandwidth than metal cables
less susceptible than metal cables to interference
much thinner and lighter than metal wires

ok thats all for this week..
see you in next post..

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