Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 66
Q841:
What type of data transmission is most likely to use B8ZS and HDB3 techniques?
A. High-speed data transmission
B. Low-speed data transmission
C. Wireless communication
D. Internet browsing
Correct Answer:
A
Chapter: 66
Q842:
Scrambling techniques like B8ZS and HDB3 are commonly used in _______ networks.
A. telecommunication
B. Wi-Fi
C. LAN
D. WiMAX
Correct Answer:
A
Chapter: 66
Q843:
Which scrambling technique uses high-density bipolar encoding to avoid long sequences of zeros?
A. B8ZS
B. HDB3
C. AMI
D. NRZ-I
Correct Answer:
B
Chapter: 67
Q844:
The process of converting analog data to digital data is called _______.
A. digitization
B. analog-to-digital conversion
C. amplification
D. quantization
Correct Answer:
B
Chapter: 67
Q845:
Two techniques for converting analog data to digital data are _______ and Delta Modulation.
A. Pulse Code Modulation
B. Delta Encoding
C. Amplitude Modulation
D. Frequency Modulation
Correct Answer:
A
Chapter: 67
Q846:
Pulse Code Modulation (PCM) is a technique used for _______ conversion.
A. analog-to-digital
B. digital-to-analog
C. analog-to-analog
D. digital-to-digital
Correct Answer:
A
Chapter: 67
Q847:
Delta Modulation (DM) is a _______ method of converting analog signals to digital.
A. quantization
B. differential
C. linear
D. non-linear
Correct Answer:
B
Chapter: 67
Q848:
Which of the following is not a technique for analog-to-digital conversion?
A. Pulse Code Modulation
B. Delta Modulation
C. Wavelet Transform
D. Quantization
Correct Answer:
C
Chapter: 67
Q849:
Pulse Code Modulation (PCM) is primarily used in _______ systems.
A. telecommunication
B. satellite communication
C. television broadcasting
D. analog radio broadcasting
Correct Answer:
A
Chapter: 67
Q850:
Which technique in analog-to-digital conversion uses a differential approach for encoding?
A. Pulse Code Modulation
B. Delta Modulation
C. Amplitude Modulation
D. Frequency Modulation
Correct Answer:
B
Chapter: 67
Q851:
The Pulse Code Modulation technique includes the process of _______.
A. sampling
B. encoding
C. quantization
D. all of the above
Correct Answer:
D
Chapter: 67
Q852:
In Delta Modulation, the signal is approximated by _______ differences between successive samples.
A. differential
B. equal
C. absolute
D. average
Correct Answer:
A
Chapter: 67
Q853:
What does Pulse Code Modulation (PCM) use to represent analog data?
A. Binary codes
B. Sine waves
C. Continuous waveforms
D. Discrete signals
Correct Answer:
A
Chapter: 67
Q854:
The Delta Modulation technique is known for its _______ signal transmission.
A. low-resolution
B. high-resolution
C. high-quality
D. high-frequency
Correct Answer:
A
Chapter: 67
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
Correct Answer:
A
Chapter: 67
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
Correct Answer:
A
Chapter: 67
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
Correct Answer:
A
Chapter: 68
Q858:
In Pulse Code Modulation (PCM), the first step is _______.
A. sampling
B. quantization
C. encoding
D. decoding
Correct Answer:
A
Chapter: 68
Q859:
Sampling is the process of _______ an analog signal at regular intervals.
A. representing
B. averaging
C. converting
D. processing
Correct Answer:
A
Chapter: 68
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
Correct Answer:
B