Exam-style question
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When would you prefer to use a digital signal over an analogue signal?.
- A.When high fidelity is required
- B.When the signal needs to be transmitted over long distances
- C.When the signal must be processed with minimal noise
- D.When the signal is always changing
Model answer
What a good answer should say
- When the signal must be processed with minimal noise
Explanation
Why this works
Digital signals are preferred when processing with minimal noise is crucial, as they are less susceptible to interference compared to analogue signals. Analogue signals can degrade over distance and are more affected by noise.
Thus, the key difference lies in the robustness of digital signals against noise, making them ideal for reliable communication.
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