Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 74
Q941:
Serial transmission is more commonly used in _______.
A. Short-distance communications
B. Long-distance communications
C. Wireless communications
D. None of the above
Correct Answer:
B
Chapter: 74
Q942:
In serial transmission, _______ is used to send bits sequentially over a single wire.
A. Parallel channels
B. A single communication channel
C. Multiple communication channels
D. None of the above
Correct Answer:
B
Chapter: 74
Q943:
The communication channel used in serial transmission is _______.
A. Single
B. Multiple
C. Unlimited
D. None of the above
Correct Answer:
A
Chapter: 74
Q944:
What is the primary benefit of serial transmission over parallel transmission?
A. Lower cost
B. Faster transmission speed
C. Requires more wires
D. None of the above
Correct Answer:
A
Chapter: 74
Q945:
Which of the following types of communication uses only one communication channel?
A. Serial transmission
B. Parallel transmission
C. Multichannel communication
D. None of the above
Correct Answer:
A
Chapter: 74
Q946:
In serial transmission, bits are sent _______.
A. Simultaneously
B. One at a time
C. Grouped together
D. None of the above
Correct Answer:
B
Chapter: 74
Q947:
Which of the following is a characteristic of serial transmission?
A. Slower data transfer rate
B. Uses multiple wires
C. No synchronization needed
D. All of the above
Correct Answer:
A
Chapter: 74
Q948:
In serial transmission, data is sent through _______ channels.
A. Multiple
B. One
C. A group of channels
D. None of the above
Correct Answer:
B
Chapter: 74
Q949:
Which transmission method is often used for data communication in networks?
A. Parallel transmission
B. Serial transmission
C. Wirelessly
D. All of the above
Correct Answer:
B
Chapter: 75
Q950:
In serial transmission, data is transmitted _______.
A. one bit at a time
B. through multiple channels
C. as a group of bits
D. none of the above
Correct Answer:
A
Chapter: 75
Q951:
Which of the following is an advantage of serial transmission?
A. Requires fewer wires
B. Transfers data faster
C. Has a higher error rate
D. None of the above
Correct Answer:
A
Chapter: 75
Q952:
In serial transmission, data travels _______.
A. through multiple wires
B. one bit at a time
C. over a single wire as a group
D. of multiple wires
Correct Answer:
B
Chapter: 75
Q953:
Which of the following is typically used in long-distance data communication?
A. Parallel transmission
B. Serial transmission
C. Wireless transmission
D. None of the above
Correct Answer:
B
Chapter: 75
Q954:
In synchronous transmission, data is transmitted _______.
A. At random intervals
B. At fixed intervals
C. With no synchronization
D. None of the above
Correct Answer:
B
Chapter: 75
Q955:
What is the main characteristic of isochronous transmission?
A. Guarantees fixed rate data
B. Transmits at random intervals
C. Uses multiple communication channels
D. None of the above
Correct Answer:
A
Chapter: 75
Q956:
In digital-to-analog conversion, the _______ of the analog signal is varied to represent digital data.
A. Amplitude
B. Frequency
C. Phase
D. All of the above
Correct Answer:
A
Chapter: 75
Q957:
Which of the following is not a characteristic of a sine wave?
A. Amplitude
B. Frequency
C. Phase
D. Bit rate
Correct Answer:
D
Chapter: 75
Q958:
The process of changing one of the characteristics of an analog signal based on digital data is called _______.
A. Digital-to-analog conversion
B. Analog-to-digital conversion
C. Signal modulation
D. None of the above
Correct Answer:
A
Chapter: 75
Q959:
If an analog signal carries 4 bits per signal element and 1000 signal elements are sent per second, what is the bit rate?
A. 4000 bps
B. 1000 bps
C. 8000 bps
D. 40000 bps
Correct Answer:
A
Chapter: 75
Q960:
In digital-to-analog conversion, which characteristic of the signal remains constant while the amplitude changes?
A. Frequency
B. Phase
C. Amplitude
D. Both frequency and phase
Correct Answer:
B