Unit 3 Exercise 1 Essay

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Application: A System, the transmission method of which is supported by telecommunications cabling, such as 100Base-TX Ethernet, or digital voice.
Unshielded Twisted-Pair: a pair of copper wires twisted together with no electromagnetic shielding around them.
Shield Twisted-Pair: a type of twisted-pair cable in which the pairs are enclosed in an outer braided shield.
Fiber Optic Cable: A cable made of optical fibers that can transmit large amounts of information at the speed of light.
Dark Fiber: An unused fiber; a fiber carrying no light. Common when extra fiber capacity is installed.
Coaxial Cable: is a type of cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield.
Plenum: The Air-handling space between the walls, under structural floors, and above drop ceilings when used to circulate and otherwise handle air in a building.
Riser: A space for indoor cables that allow cables to pass between floors, normally a vertical shaft or space.
Ripcord: A length of string built into optical fiber cables that are pulled to split the outer jacket of the cable without using a blade.
Core: The central part of a single optical fiber in which the light signal is transmitted.
Attenuation: Indicate a decrease in power (loss of signal) from one point to another.
Noise: is a signal that interferes with the desired signal normally present in or passing through the system.
Headroom: The number of decibels by which a system exceeds

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