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PVC is used as a seath for most cables, but cables in the spaces between floors of buildings (these spaces are called plenums) should be coated in Teflon because PVC gives off toxic fumes when burned. Otherwise, cable performance is the same. |
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(Unshielded twisted pair) most common and least expensive ethernet cables, but vulnerable to electromagnetic interference |
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(Shielded twisted pair) same construction as UTP, but with added covering around wires to protect from electromagnetic interference. More expensive than UTP cable |
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cable that uses glass fibers to transmit pulses of light. Very fast, but cable is fragile |
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first type of networking cable, now only used for cable TV. Replaced by ethernet because coax requirese a bus topology and cannot be used with a hub or switch |
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used for UTP and STP ethernet cables |
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used for telephone connections, dial-up modems and DSL |
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general term for high-speed internet, 300 kbps and faster. Different from dial-up in that it can be used simultaneously with phone service |
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(Digital subscriber line) uses the telephone line to deliver internet. DSL modem connects computer to service, typically through ethernet port |
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delivered through the same coax cable that provides cable TV signal |
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uses a satellite dish to send and recieve signals between geosynchronous satellites. FCC requires professional installation of satellites; an incorrectly aligned dish with uplink capabilities can interfere with satellites and disrupt service |
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point-to-point connection with ISP is estabished with a fiber optic cable to deliver internet to business or residence |
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oldest technology for home users to connect to the internet, uses an analog modem to connect to an ISP over phone lines |
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