
ch 4 - 11
Authored by Abilayhan Nurmahan
Computers
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the OSI physical layer?
controlling access to media
transmitting bits across the local media
performing error detection on received frames
exchanging frames between nodes over physical network media
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are two strands of fiber used for a single fiber-optic connection?
The two strands allow the data to travel for longer distances without degrading.
The two strands prevent crosstalk from causing interference on the connection.
The two strands increase the speed at which the data can travel.
The two strands allow for full-duplex connectivity.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following describes crosstalk?
the distortion of a network signal due to fluorescent lighting
the distortion of a transmitted message due to signals carried in adjacent wires
the weakening of a network signal over long cable lengths
the loss of wireless signal over excessive distance from an access point
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which procedure is used to reduce the effect of crosstalk in copper cables?
requiring proper grounding connections
twisting opposing-circuit wire pairs together
wrapping a bundle of wires with metallic shielding
designing a cable infrastructure to avoid crosstalk interference
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of UTP cable is used to connect a PC to a switch port?
console
rollover
crossover
straight-through
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the definition of bandwidth?
the speed of bits across media over a given period of time
the speed at which bits travel on a network
the amount of data that can flow in a given amount of time
the measure of usable data transferred over a given period of time
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement correctly describes frame encoding?
It uses the characteristic of one wave to modify another wave.
It transmits data signals along with a clock signal that occurs at evenly spaced time durations.
It generates the electrical, optical, or wireless signals that represent the binary numbers of the frame.
It converts bits into a predefined code in order to provide a predictable pattern to help distinguish data bits from control bits.
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