ITPEC IP October 2022 Question 4
ITPEC IP October 2022 — Question 4 of 100
The blanks are analog, digital, and digital. A continuously varying physical quantity represents analog data. Discrete numerical values represent digital data. A music CD stores sampled and quantized audio as digitally encoded data even though the original sound wave is analog.
Answer (b)
Why not others:
- options that call continuous physical quantities digital reverse the definitions
- options that call CD data analog confuse the original sound signal with its stored representation
Key rule: Analog varies continuously; digital uses discrete values, and audio CDs store digital samples.
AI-generated — may contain errors
The original exam layout is preserved in the image so diagrams, formulas, tables, and code remain accurate.
This question comes from an official ITPEC past paper. ITPEC Practice is an independent study tool and is not affiliated with ITPEC. See the official IP past-paper collection or Report an issue.