Understanding wired networks 0.0 / 5 ? AllITFunNone Created by: lucydosramosCreated on: 01-11-18 11:17 Why is Ethernet the most common method in an office? Reliability and performance 1 of 27 What is the most commonly used networking cable? Twisted-pair 2 of 27 Advantages of twisted pair cables? Fast and very affordable 3 of 27 What problems do twisted pair cables reduce? Crosstalk and interference 4 of 27 What is the most common type of patch cable? Straight through cable 5 of 27 What does a straight through cable do? Connects a computer to a central connecting device 6 of 27 What does a crossover cable do? Connect like devices to each other 7 of 27 How far can twisted pair cables be ran before the signal degrades? 100m 8 of 27 What do you use to allow a cable to run futher? Repeater, hub or switch 9 of 27 How are twisted pair cables categorised? Frequency and data transfer rate 10 of 27 When is a shielded twisted pair cable required? If there is a lot of interference 11 of 27 What is the shield made of in shielded twisted pair cables? Aluminium 12 of 27 What is interference? Anything that disrupts or modifies a signal 13 of 27 What is data emanation? Transmission of data across electromagnetic signals 14 of 27 When data is transmitted through data emanation what is generated? Electronic field 15 of 27 What could happen to the electronic field in data emanation? Could be exploited to intercept the data 16 of 27 What is crosstalk? Signal transmitted on one wire has an affect on another 17 of 27 What is crosstalk due to? Close proximity 18 of 27 What can crosstalk lead to? Corrupt communications or transmissions being intercepted 19 of 27 When should cables be plenum-rated? When inside walls or above drop ceilings 20 of 27 What makes plenum-rated cables more impervious to fire? Teflon coating 21 of 27 What does a fire optic cable transmit? Light 22 of 27 What is the media for fibre optics? Glass 23 of 27 What connectors are there for a fibre optic cable? ST, SC and LC 24 of 27 How many rays of light does a single-mode fibre optic cable carry? 1 25 of 27 Single mode-fibre optic cables are used for longer distances, true or false? True 26 of 27 What fibre optic cable can carry multiple rays? Multi-mode fibre 27 of 27
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