Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q521: How many bits are needed per level if a digital signal has 2 levels?
- A: 1
- B: 2
- C: 3
- D: 4
View Answer
A
Q522: The number of bits needed per level for a digital signal with 4 levels is _______.
- A: 1
- B: 2
- C: 3
- D: 4
View Answer
B
Q523: If a digital signal has 8 levels, how many bits are needed per level?
- A: 1
- B: 2
- C: 3
- D: 4
View Answer
C
Q524: How many bits are needed per level if a digital signal has 9 levels?
- A: 3.17
- B: 4
- C: 3
- D: 2
View Answer
B
Q525: In general, if a signal has L levels, each level needs _______ bits.
- A: log2 L
- B: L
- C: log2 L + 1
- D: L - log2 L
View Answer
A
Q526: Fill in the blank: A digital signal with 8 levels requires _______ bits per level.
- A: 2
- B: 1
- C: 3
- D: 4
View Answer
C
Q527: If a digital signal has 9 levels, the closest integer value for the number of bits per level is _______.
- A: 2
- B: 3
- C: 4
- D: 1
View Answer
B
Q528: A digital signal with 9 levels uses _______ bits per level, which is not a realistic value.
- A: 3.17
- B: 4
- C: 3
- D: 2
View Answer
A
Q529: The number of bits needed per level for a signal with 4 levels is determined by the formula _______.
- A: log2 L
- B: L
- C: L x log2
- D: log2 L + 1
View Answer
A
Q530: If a digital signal has 8 levels, how many bits are needed to represent each level?
- A: 2
- B: 3
- C: 1
- D: 4
View Answer
C