Write short notes on the following: STP, Coaxial cable, Twisted-pair wire
Question :
Write short notes on the following: STP, Coaxial cable, Twisted-pair wire
They are available in different varieties.
- Category 3 twisted pairs consist of two insulated wires gently twisted
together. Four such pairs are typically grouped together in a plastic sheath
for protection and to keep the eight wires together. Effect of noise due to
(Electromagnetic Interference (EMI) is comparatively low because of shielding
Being thin in size, the wires are likely to break.
- Coaxial
cable consists of a stiff copper wire as the core surrounded by insulating material. The signal is transmitted by the inner
copper wire and it is electrically shielded by the outer sleeve. Effect of noise
due to (Electromagnetic Interference (EMI) is very low. Can support up to tens
of Mbps at a distance of several thousand feet. Emits very low radiation and
causes less interference with the communication equipment.
- Two insulated copper wires twisted together in a helical shape. The copper conductors are typically about 1 mm thick. Transmission of electromagnetic energy along the wires. Least expensive than coaxial cable. Attenuation is high because of the electromagnetic radiation of energy. Being the oldest method of data communication, ample trained man-power is available to maintain the twisted pair cables.