Question

what effect does noise have on streaming videos from the cloud?
a. digital signals from the cloud pick up noise and become unreliable.
b. noise makes a digital signal louder.
c. analog signals from the cloud are distorted by noise.
d. a digital signal picks up noise, but it is still reliable

Explanation:

• Option A: Digital signals are designed to be less affected by noise compared to analog signals. They have error - correction mechanisms, so they don't become unreliable easily just because of noise.
• Option B: Noise does not make a digital signal louder. Noise is an unwanted disturbance, not a volume - increasing factor for digital signals.
• Option C: Streaming videos from the cloud typically use digital signals, not analog signals.
• Option D: Digital signals can pick up some noise, but due to their binary nature (0s and 1s) and error - correction techniques (like parity checks, cyclic redundancy checks), they can still be reliable.

Answer:

D. A digital signal picks up noise, but it is still reliable