Question

question 12 of 25
what is one disadvantage of sending information over long distances wirelessly using digital signals?
a. the farther the signals travel, the easier they are to detect.
b. the farther the signals travel, the more slowly they move.
c. the signals become weaker the farther the receiver is from the source.
d. the signals become stronger the farther the receiver is from the source.

Explanation:

Digital signals, when transmitted wirelessly over long distances, experience signal attenuation. As they travel farther from the source, their strength diminishes. Option A is incorrect because signal detectability isn't directly related to distance in this negative sense. Option B is wrong as signal speed (in a given medium) is relatively constant. Option D contradicts the principle of signal attenuation.

Answer:

C. The signals become weaker the farther the receiver is from the source.