Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q851: The Pulse Code Modulation technique includes the process of _______.
- A: sampling
- B: encoding
- C: quantization
- D: all of the above
View Answer
D
Q852: In Delta Modulation, the signal is approximated by _______ differences between successive samples.
- A: differential
- B: equal
- C: absolute
- D: average
View Answer
A
Q853: What does Pulse Code Modulation (PCM) use to represent analog data?
- A: Binary codes
- B: Sine waves
- C: Continuous waveforms
- D: Discrete signals
View Answer
A
Q854: The Delta Modulation technique is known for its _______ signal transmission.
- A: low-resolution
- B: high-resolution
- C: high-quality
- D: high-frequency
View Answer
A
Q855: Which of the following methods is used for converting analog signals into digital signals in PCM?
- A: Sampling
- B: Multiplexing
- C: Filtering
- D: Shaping
View Answer
A
Q856: Which technique uses a constant bit rate to encode analog signals?
- A: Pulse Code Modulation
- B: Delta Modulation
- C: Amplitude Modulation
- D: Spectrum Modulation
View Answer
A
Q857: Which of the following is a key difference between Pulse Code Modulation and Delta Modulation?
- A: Pulse Code Modulation uses quantization, while Delta Modulation uses differencing.
- B: Pulse Code Modulation uses differencing, while Delta Modulation uses quantization.
- C: Both use similar methods.
- D: None of the above
View Answer
A
Q858: In Pulse Code Modulation (PCM), the first step is _______.
- A: sampling
- B: quantization
- C: encoding
- D: decoding
View Answer
A
Q859: Sampling is the process of _______ an analog signal at regular intervals.
- A: representing
- B: averaging
- C: converting
- D: processing
View Answer
A
Q860: In PCM, the signal is sampled at a specific _______ to convert it into a digital form.
- A: frequency
- B: time interval
- C: voltage level
- D: phase shift
View Answer
B