Signal - Problems & Effects - Networking

Q.  Match the following:
List – I - - - - - - - - - - - - - - - - -List – II
a. Attenuation - - - - - - - - - - - -i. External energy that corrupts a signal.
b. Distortion - - - - - - - - - - -- - -ii. Loss of a signal's energy
c. Noise - - - - - - - - - - - - -- - -- iii. Alteration of a signal
- Published on 17 Jun 15

a. a-iii, b-ii, c-i
b. a-iii, b-i, c-ii
c. a-ii, b-iii, c-i
d. There is no matching pair.

ANSWER: a-ii, b-iii, c-i

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    Discussion

  • Prajakta Pandit   -Posted on 28 Oct 15

    Attenuation : It refers to any reduction in the strength of a signal. It occurs with any type of signal whether digital or analog. It is a loss of signals energy. It is a natural consequence of signal transmission over long distances.

    Distortion : It is the undesired changes in the waveform of signals. It is an alteration of a signal.

    Noise : It is a external energy that corrupts a signal. It generally takes place in the transmission mediums when electric current is passed through them.

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