Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1001: Which of the following is an example of digital-to-analog conversion?
- A: Amplitude shift keying (ASK)
- B: Analog filtering
- C: Digital encoding
- D: Data decryption
View Answer
A
Q1002: In digital-to-analog conversion, the rate at which signal elements are transmitted is referred to as _______.
- A: Bit rate
- B: Signal rate
- C: Baud rate
- D: Frequency rate
View Answer
C
Q1003: What is the relationship between baud rate and bit rate in analog transmission?
- A: Baud rate ≤ Bit rate
- B: Baud rate > Bit rate
- C: Baud rate = Frequency
- D: Baud rate ≥ Signal rate
View Answer
A
Q1004: If a sine wave's frequency is increased, what happens to the signal?
- A: The signal gets compressed
- B: The signal becomes faster
- C: The signal amplitude increases
- D: The signal phase changes
View Answer
B
Q1005: Which characteristic of the carrier signal is varied in frequency shift keying (FSK)?
- A: Amplitude
- B: Frequency
- C: Phase
- D: None of the above
View Answer
B
Q1006: In Binary Phase Shift Keying (BPSK), the carrier signal’s _______ is altered to represent data.
- A: Amplitude
- B: Frequency
- C: Phase
- D: None of the above
View Answer
C
Q1007: Which method is used to represent digital data by changing the phase of a signal?
- A: Amplitude shift keying
- B: Frequency shift keying
- C: Phase shift keying
- D: None of the above
View Answer
C
Q1008: How many characteristics of a sine wave are typically used in digital-to-analog conversion?
- A: One
- B: Two
- C: Three
- D: Four
View Answer
C
Q1009: What is the primary purpose of the carrier signal in digital-to-analog conversion?
- A: To carry the data
- B: To encode the signal
- C: To filter noise
- D: To amplify the signal
View Answer
A
Q1010: If a carrier signal is modulated using frequency shift keying (FSK), what changes in the signal?
- A: Only amplitude
- B: Only frequency
- C: Only phase
- D: Amplitude and phase
View Answer
B