The modem connects to your ISP, which typically provides either cable or DSL Internet service13. What is twist ratio and why is it important? The number of twist per meter is known as twist ratio. The more twist per meter, the more it is resistant to cross talk.14. What fiber is used in fiber-optic cabling to protect the inner core and prevent the cable from stretching?Kevlar (polymeric fiber)15. What characteristic of optical transmissions is primarily responsible for the distance limitations of fiber-optic cabling? Cost and Optical loss16. Why is SMF more efficient over long distances than MMF? Signals traveling over multi-mode fiber experience greater attenuation than those traversing single mode.17. Why do APC ferrules create less back reflection than do UPC ferrules? the end faces are placed at an angle to each other.18. What does a fiber cleaver do? It is part of the Terminate fiber-optic cable process19. How is latency measured and in what unit? The delay from when the data leave the source and when it arrives, the unit is called RTT (round trip time)
20. What is the difference between short circuits and open circuits? A short circuit is an unwanted connection, such as when exposed wires touch each other. An open circuit is one where needed connections are missing, such as when a wire breaks.
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- Fall '15
- Category 6 cable, Twisted pair, twisted-pair cable, B. Half-duplex, A. Coaxial cable