Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q901: Which of the following are the steps involved in PCM?
- A: Quantization, Sampling, Encoding
- B: Quantization, Modulation, Sampling
- C: Sampling, Encoding, Modulation
- D: Encoding, Sampling, Decompression
View Answer
A
Q902: Which of the following describes Pulse Code Modulation (PCM)?
- A: A digital representation of an analog signal using binary code
- B: Continuous transmission of analog signals
- C: Conversion of digital signals into analog form
- D: None of the above
View Answer
A
Q903: Delta Modulation (DM) is a simpler technique than _______.
- A: Pulse Code Modulation
- B: Amplitude Modulation
- C: Frequency Modulation
- D: Phase Modulation
View Answer
A
Q904: In Delta Modulation, the system finds the _______ from the previous sample.
- A: change in signal
- B: amplitude of the signal
- C: highest frequency
- D: average value
View Answer
A
Q905: Delta Modulation does not use _______ to represent data.
- A: code words
- B: samples
- C: quantization levels
- D: encoding
View Answer
A
Q906: Which of the following is a component of Delta Modulation?
- A: Sampling Component
- B: Quantization Component
- C: Encoding Component
- D: All of the above
View Answer
D
Q907: In Delta Modulation, the system only considers the _______ of the previous sample for encoding.
- A: difference
- B: change in value frequency modulation
- C: amplitude
- D:
View Answer
A
Q908: The main advantage of Delta Modulation (DM) over Pulse Code Modulation (PCM) is its _______.
- A: Simplicity
- B: increased accuracy
- C: encoding speed
- D: greater bandwidth usage
View Answer
A
Q909: Delta Demodulation is responsible for _______.
- A: Converting digital data back into analog signals
- B: Encoding the signal
- C: Compressing the signal
- D: Filtering the signal
View Answer
A
Q910: Which of the following is true about Delta Modulation?
- A: It finds the difference between consecutive samples to represent data.
- B: It uses code words to represent each sample.
- C: It uses a high level of sampling frequency to improve quality.
- D: None of the above
View Answer
A