COMPUTER FUNDAMENTALS

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COMPUTER NETWORKS AND COMMUNICATIONS

NETWORK TOPOLOGIES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The term used when electricity bounces off the end of a cable and back in the other direction is called ____ (or “reflection”).
A
signal propagation
B
signal bounce
C
physical star topology
D
network backbone
Explanation: 

Detailed explanation-1: -In telecommunications, signal reflection occurs when a signal is transmitted along a transmission medium, such as a copper cable or an optical fiber. Some of the signal power may be reflected back to its origin rather than being carried all the way along the cable to the far end.

Detailed explanation-2: -The voltage reflection coefficient , given by Equation 3.12. 5, determines the magnitude and phase of the reflected wave given the incident wave, the characteristic impedance of the transmission line, and the terminating impedance. We now consider values that arise for commonly-encountered terminations.

Detailed explanation-3: -Signal reflection is a problem that arises when the cabling between devices or terminations at either end are substandard. This can happen in copper wire, in traces on a printed circuit board, in optical fiber.

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