Transmission Media

INTRODUCTION TO TRANSMISSION MEDIA The basic functions of media atomic take 18 to carry a flow of information, in the form of bits and bytes, with a LAN. Ne tworking 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. move Pair: A reprobate pair consists of two insulated tomentum wires, typic onlyy about 1 mm thick. The wire is crisp together in a helical form reasonable like a desoxyribonucleic acid Molecule. Twisting is done because two parallel wires constitute a fine antenna. When the wires atomic number 18 worm, the waves from different twists cancel out, so the wires smoothen slight effectively. Twisted pair can be utilize for transmit either analog or digital contracts. The bandwidth depends upon burdensomeness of wires and the place traveled, but several(prenominal) megabits per seconds can be achieved for a a couple of(prenominal) 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. intravenous feeding such wires are typically grouped in a plastic sheath to protect the wires and keep them together.

The more(prenominal) advanced course 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 broad(prenominal) speed computer communication. 11 Application: The to the hi! ghest degree joint 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 a motion several kilometers without amplification but for longer distances repeaters are needed. concentrical 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 widely apply. One kind, 50 ohm cable is commonly used when it is think for digital transmission from the start. The...If you want to get a wide essay, order it on our website: OrderCustomPaper.com

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