Transmission Media

INTRODUCTION TO TRANSMISSION MEDIA The basic functions of media atomic heel 18 to carry a flow of information, in the form of bits and bytes, by dint of a LAN. Ne cardinalrking 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. perverted Pair: A reprobate pair consists of two insulated crap wires, typic whollyy about 1 mm thick. The wire is unnatural together in a helical form proficient like a desoxyribonucleic acid Molecule. Twisting is done because two parallel wires constitute a fine antenna. When the wires atomic number 18 perverted, the waves from different twists cancel out, so the wires smoothen slight effectively. Twisted pair can be utilize for transmitting either analog or digital indicates. The bandwidth depends upon burdensomeness of wires and the outdistance traveled, but several(prenomi nal) megabits per seconds can be achieved for a hardly a(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. quaternion such wires are typically grouped in a plastic sheath to protect the wires and keep them together.

The more(prenominal) advanced folk 5 twisted pair lead more twists per cm which results in less crosstalk and meliorate quality signal over long distances making them more suitable for game speed computer communication. 11 Application: The to the high! est degree ballpark application of twisted pair is the telephone system. approximately all telephones are connected to telephone company berth by a twisted pair. Twisted pair can effort 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 astray 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 broad essay, order it on our website: OrderCustomPaper.com

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