Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q891: In Pulse Code Modulation (PCM), the analog signal is first _______.
- A: encoded
- B: sampled
- C: quantized
- D: modulated
View Answer
B
Q892: In PCM, the _______ step involves measuring the amplitude of the signal at regular intervals.
- A: quantization
- B: sampling
- C: encoding
- D: decoding
View Answer
B
Q893: Which technique is used to convert analog signals into digital form in PCM?
- A: Sampling
- B: Encoding
- C: Modulation
- D: Compression
View Answer
A
Q894: The second step in Pulse Code Modulation (PCM) is _______.
- A: quantization
- B: encoding
- C: sampling
- D: decoding
View Answer
A
Q895: Which of the following steps comes first in PCM?
- A: Quantization
- B: Encoding
- C: Sampling
- D: Decoding
View Answer
C
Q896: In Pulse Code Modulation (PCM), the sampled signal is _______ into a finite number of levels during the quantization step.
- A: encoded
- B: sampled
- C: converted
- D: modified
View Answer
C
Q897: Which of the following is true about Pulse Code Modulation (PCM)?
- A: It is a method of encoding analog signals into digital form.
- B: It is a method of transmitting analog signals over the air.
- C: It involves a single-step conversion process.
- D: None of the above
View Answer
A
Q898: The purpose of quantization in PCM is to _______.
- A: convert continuous signals into discrete digital signals
- B: map continuous values into fixed levels
- C: reduce the signal amplitude
- D: sample the signal for processing
View Answer
B
Q899: In PCM, the sampling step is responsible for _______.
- A: Converting analog values into binary code
- B: Taking periodic measurements of the signal
- C: Mapping values into discrete levels
- D: None of the above
View Answer
B
Q900: Pulse Code Modulation (PCM) is typically used in _______.
- A: Digital audio systems
- B: Analog television transmission
- C: Satellite communication
- D: All of the above
View Answer
A