COMPUTER NETWORKING

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PHYSICAL LAYER AND TRANSMISSION MEDIA

DATA AND SIGNALS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
True or False. Two important factors affecting the transfer of a signal over a medium are noise and attenuation.
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -In a nutshell, attenuation is the loss of transmission signal strength measured in decibels (dB). As it increases, the more distorted and unintelligible the transmission (e.g. a phone call or email you’re trying to send) becomes.

Detailed explanation-2: -Attenuation in computer networking is the loss of communication signal strength that is measured in decibels. As the rate of attenuation increases, the transmission, such as a phone call or an email a user tries to send, becomes more distorted.

Detailed explanation-3: -This loss of energy is called attenuation. When a signal travels through a medium from one point to another, it may change the form or shape of the signal. This is known as distortion. Noise is unwanted electrical or electromagnetic energy that degrades the quality of signals and data.

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