Cisco Certified Network Associate (CCNA) Group Practice Exam

Attenuation is defined as the loss of signal strength as distance increases.

Loss of signal strength as distance increases Time for a signal to travel Leakage of signals Strengthening of a signal

Correct Answer:

Loss of signal strength as distance increases

Explanation:

Attenuation is the decrease in signal strength as it travels through a medium or along a link. As distance increases, factors like conductor resistance, connector losses, and the medium’s properties cause the signal to weaken, which is why we measure attenuation in decibels to understand how far a signal can travel before it becomes too weak. This concept is different from propagation delay, which is about the time a signal takes to traverse a path, and from leakage or crosstalk, which involve signals escaping or interfering with other channels, or from amplification, which strengthens a signal. So the statement describing the loss of signal strength as distance increases correctly captures attenuation.

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