Chapter 5 - Network Cabling
Statistical multiplexing
Which kind of multiplexing assigns slots to nodes according to priority and need?
Analog
Which type of transmission is measured by baud rate?
The delay from when the data leave the source and when it arrives, the unit is called RTT (round trip time)
How is latency measured and in what unit?
Amplitude - A measure of a signal's strength frequency - the number of times a wave's amplitude cycles wavelength - the distance between corresponding points on the wave's cycle phase - the progress of a wave over time
What are the four fundamental properties of an analog signal?
Cost and Optical loss
What characteristic of optical transmissions is primarily responsible for the distance limitations of fiber-optic cabling?
amplifier and repeater
What device can boost an analog signal? A digital signal?
It is part of the Terminate fiber-optic cable process
What does a fiber cleaver do?
The modem connects to your ISP, which typically provides either cable or DSL Internet service
What does a modem do?
Kevlar (polymeric fiber)
What fiber is used in fiber-optic cabling to protect the inner core and prevent the cable from stretching?
Simplex, simplex and half-duplex
When an Ethernet NIC has been configured by the OS to use half-duplex, the transmit pair of the cable uses___________ transmissions, the receive pair in the cable uses ___________ transmissions, and the twisted-pair in the cable uses ___________transmissions.
Cat5e or higher
Which categories of twisted-pair cable can support Gigabit Ethernet?
ethernet
Which of the following is not an example of a broadband transmission?
probe
Which part of a toner and probe kit emits a tone when it detects electrical activity on wire pair?
Near end cross-talk (NEXT)
Which type of cross-talk occurs between wire pairs near the source of a signal?
the end faces are placed at an angle to each other.
Why do APC ferrules create less back reflection than do UPC ferrules?
Signals traveling over multi mode fiber experience greater attenuation than those traversing single mode.
Why is SMF more efficient over long distances than MMF?
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.
What is the difference between short circuits and open circuits?
cat 6a
What is the earliest-pair cabling standard that meets the minimum requirements for 10Gbase-T transmissions?
The number of twist per meter is know as twist ratio. The more twist per meter, the more it is resistant to cross talk.
What is twist ratio and why is it important?
Coaxial cable, coaxial cable, and F- connector
What kind of cable uses BNC connectors? F-connectors? Which connector is likely to be used by cable TV?