Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 70
Q881:
In the PCM encoding step, the quantized signal is converted into _______ using a specific code.
A. digital code
B. analog code
C. sinusoidal code
D. noise code
Correct Answer:
A
Chapter: 70
Q882:
The primary purpose of the encoding step in PCM is to _______.
A. convert the signal into a digital format
B. amplify the signal
C. forward the signal to the receiver
D. increase the frequency
Correct Answer:
B
Chapter: 70
Q883:
In PCM, the encoding step converts the output of the quantization step into _______.
A. continuous analog values
B. digital code
C. original analog values
D. continuous digital signals
Correct Answer:
B
Chapter: 70
Q884:
What is the typical output format after the encoding step in PCM?
A. Binary code
B. Analog signal
C. Frequency-modulated signal
D. Waveform signal
Correct Answer:
A
Chapter: 70
Q885:
Which of the following is used in the encoding process of PCM?
A. A/D Converter
B. Modulator
C. Decoder
D. Amplifier
Correct Answer:
A
Chapter: 70
Q886:
The encoding step in PCM uses _______ to represent quantized values.
A. binary code
B. analog signal
C. continuous values
D. quantized noise
Correct Answer:
A
Chapter: 70
Q887:
In PCM, the encoded signal is suitable for _______ transmission.
A. analog
B. continuous
C. digital
D. serial
Correct Answer:
B
Chapter: 70
Q888:
Which step follows encoding in the PCM process?
A. Transmission
B. Decoding
C. Amplification
D. Compression
Correct Answer:
B
Chapter: 71
Q889:
The process of converting analog data into digital data is known as _______.
A. Quantization
B. Modulation
C. Digitization
D. Encoding
Correct Answer:
C
Chapter: 71
Q890:
Which of the following is a technique used for Analog-to-Digital Conversion (ADC)?
A. Pulse Code Modulation (PCM)
B. Amplitude Modulation (AM)
C. Frequency Modulation (FM)
D. Phase Modulation (PM)
Correct Answer:
A
Chapter: 71
Q891:
In Pulse Code Modulation (PCM), the analog signal is first _______.
A. encoded
B. sampled
C. quantized
D. modulated
Correct Answer:
B
Chapter: 71
Q892:
In PCM, the _______ step involves measuring the amplitude of the signal at regular intervals.
A. quantization
B. sampling
C. encoding
D. decoding
Correct Answer:
B
Chapter: 71
Q893:
Which technique is used to convert analog signals into digital form in PCM?
A. Sampling
B. Encoding
C. Modulation
D. Compression
Correct Answer:
A
Chapter: 71
Q894:
The second step in Pulse Code Modulation (PCM) is _______.
A. quantization
B. encoding
C. sampling
D. decoding
Correct Answer:
A
Chapter: 71
Q895:
Which of the following steps comes first in PCM?
A. Quantization
B. Encoding
C. Sampling
D. Decoding
Correct Answer:
C
Chapter: 71
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
Correct Answer:
C
Chapter: 71
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
Correct Answer:
A
Chapter: 71
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
Correct Answer:
B
Chapter: 71
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
Correct Answer:
B
Chapter: 71
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
Correct Answer:
A