Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q871: Which of the following is the result of quantization in PCM?
- A: The signal is represented with finite values.
- B: The signal remains continuous.
- C: The signal is modulated.
- D: The signal becomes analog.
View Answer
A
Q872: The error introduced by quantization is known as _______.
- A: quantization noise
- B: aliasing
- C: error distortion
- D: sampling noise
View Answer
A
Q873: Which of the following factors determines the accuracy of quantization in PCM?
- A: Number of quantization levels
- B: Signal amplitude
- C: Sampling rate
- D: Signal frequency
View Answer
A
Q874: In Pulse Code Modulation, quantization error occurs due to _______.
- A: rounding the continuous signal value to a discrete level
- B: amplifying the signal
- C: encoding the signal at a low rate
- D: decoding the signal into continuous form
View Answer
A
Q875: Which of the following is a potential effect of quantization in PCM?
- A: Quantization error
- B: Sampling loss
- C: Signal aliasing
- D: Noise distortion
View Answer
A
Q876: The process of quantization is typically followed by _______ in PCM.
- A: sampling
- B: encoding
- C: decoding
- D: amplification
View Answer
B
Q877: Which of the following best describes the role of quantization in PCM?
- A: To reduce the bandwidth of the signal
- B: To convert the analog signal into a digital representation
- C: To modulate the signal for transmission
- D: To sample the analog signal
View Answer
D
Q878: In Pulse Code Modulation (PCM), the third step after sampling and quantization is _______.
- A: Modulation
- B: Encoding
- C: Decoding
- D: Compression
View Answer
B
Q879: The encoding step in PCM involves converting quantized values into _______.
- A: analog signals
- B: digital signals
- C: continuous signals
- D: amplitude levels
View Answer
B
Q880: Which of the following best describes the encoding process in PCM?
- A: Converting the signal into digital form
- B: Converting the signal into analog form
- C: Modulating the signal for transmission
- D: Compressing the signal for storage
View Answer
A