Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q501: The spectrum of a composite signal shows the _______ components of the signal.
- A: Frequency
- B: Time
- C: Amplitude
- D: Phase
View Answer
A
Q502: Fill in the blank: A digital signal can have _______ levels.
- A: More than two
- B: Exactly two
- C: Three
- D: Unlimited
View Answer
A
Q503: A digital signal uses _______ voltage for encoding a 1 and _______ voltage for encoding a 0.
- A: Positive, zero
- B: Negative, positive
- C: Zero, positive
- D: Zero, negative
View Answer
A
Q504: The bandwidth of a signal is measured in _______.
- A: Hertz
- B: Amplitude
- C: Time
- D: Voltage
View Answer
A
Q505: A digital signal can represent information using _______ voltage levels.
- A: More than two
- B: Exactly two
- C: Only zero
- D: Only positive
View Answer
A
Q506: Fill in the blank: If a signal has frequencies of 100, 300, 500, 700, and 900 Hz, the bandwidth of the signal is _______ Hz.
- A: 800
- B: 700
- C: 100
- D: 900
View Answer
A
Q507: In digital signals, a 1 can be encoded as a _______ voltage and a 0 as _______ voltage.
- A: Positive, zero
- B: Negative, positive
- C: Zero, positive
- D: High, low
View Answer
A
Q508: The decomposition of a composite signal into its frequency components helps to determine the _______ of the signal.
- A: Bandwidth
- B: Amplitude
- C: Frequency shift
- D: Phase shift
View Answer
A
Q509: A digital signal is different from an analog signal because it uses _______ to represent data.
- A: Discrete voltage levels
- B: Continuous voltage levels
- C: Infinite voltage levels
- D: Analog voltage levels
View Answer
A
Q510: A digital signal can have _______ voltage levels.
- A: More than two
- B: Exactly two
- C: Three
- D: Unlimited
View Answer
A