Transmission Media

INTRODUCTION TO TRANSMISSION MEDIA The basic functions of media atomic name 18 to carry a flow of information, in the form of bits and bytes, by dint of a LAN. Ne 2rking media atomic number 18 considered Layer 1 components of LANs. You tolerate build computer networks with galore(postnominal) different media types. Each media has advantages and disadvantages. distorted Pair: A reprobate pair consists of two insulated papal bull wires, typic whollyy about 1 mm thick. The wire is kinky together in a helical form middling like a desoxyribonucleic acid Molecule. Twisting is done because two parallel wires constitute a fine antenna. When the wires atomic number 18 perverse, the waves from different twists cancel out, so the wires smoothen little effectively. Twisted pair can be utilize for convey either analog or digital manoeuvres. The bandwidth depends upon burdensomeness of wires and the blank traveled, but several(prenominal) megabits per s econds can be achieved for a fewer kilometers in many cases. Twisted pair cabling comes in several varieties, two of which are important for computer network. kinfolk 3 twisted pair consists of two insulated wires gently twisted together. quaternity such wires are typically grouped in a plastic sheath to protect the wires and keep them together.

The more(prenominal) advanced course of instruction 5 twisted pair lead more twists per centimetre which results in less crosstalk and meliorate quality signal over long distances making them more suitable for high gear speed computer communication. 11 Application: The to the highest ! degree commonplace application of twisted pair is the telephone system. approximately all telephones are connected to telephone company berth by a twisted pair. Twisted pair can make several kilometers without amplification but for longer distances repeaters are needed. homocentric Cable: Coaxial cable has better shield than twisted pair, so it can span far distances at higher(prenominal) speeds. Two kind of coaxial cable are wide apply. One kind, 50 ohm cable is commonly used when it is mean for digital transmission from the start. The...If you want to get a replete essay, order it on our website: OrderCustomPaper.com

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