Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 73
Q921:
In which transmission mode are bits sent one at a time, using a single wire?
A. Parallel Transmission
B. Serial Transmission
C. Bidirectional Transmission
D. Synchronous Transmission
Correct Answer:
B
Chapter: 73
Q922:
What is the main disadvantage of Parallel Transmission?
A. It requires multiple wires
B. Slower transmission speed
C. Requires special encoding
D. High error rates
Correct Answer:
A
Chapter: 73
Q923:
In data transmission, which of the following modes sends ‘n’ bits at a time?
A. Serial Transmission
B. Parallel Transmission
C. Asynchronous Transmission
D. None of the above
Correct Answer:
B
Chapter: 73
Q924:
Which of the following best describes Serial Transmission?
A. Bits sent one at a time using a single wire
B. Bits grouped into multiple parts and sent together
C. Bits sent using multiple wires at the same time
D. None of the above
Correct Answer:
A
Chapter: 73
Q925:
In Transmission of Data, _______ refers to how bits are sent: one at a time or in groups.
A. Transmission Mode
B. Transmission Medium
C. Transmission Speed
D. Transmission Power
Correct Answer:
A
Chapter: 73
Q926:
Which transmission mode is more cost-effective and simpler to implement?
A. Parallel Transmission
B. Serial Transmission
C. Multi-path Transmission
D. None of the above
Correct Answer:
B
Chapter: 73
Q927:
In data transmission, how are bits organized when using Parallel Transmission?
A. One bit at a time in a single wire
B. Grouped into ‘n’ bits and sent over ‘n’ wires
C. Encoded into signals
D. None of the above
Correct Answer:
B
Chapter: 73
Q928:
Which of the following is an example of Serial Transmission?
A. USB communication
B. Printer cables
C. TV signals
D. None of the above
Correct Answer:
A
Chapter: 73
Q929:
Which transmission mode would be used for a long-distance connection with lower transmission speed?
A. Serial Transmission
B. Parallel Transmission
C. Asynchronous Transmission
D. Synchronous Transmission
Correct Answer:
A
Chapter: 73
Q930:
When bits are grouped and sent at once, this is referred to as _______.
A. Serial Transmission
B. Parallel Transmission
C. Bidirectional Transmission
D. Synchronous Transmission
Correct Answer:
B
Chapter: 73
Q931:
In which of the following does the data stream consist of binary data organized into groups of ‘n’ bits?
A. Serial Transmission
B. Parallel Transmission
C. Asynchronous Transmission
D. Synchronous Transmission
Correct Answer:
B
Chapter: 73
Q932:
Which of the following is true for data transmission in parallel mode?
A. Requires fewer wires for faster data transfer
B. Uses multiple wires to send bits simultaneously
C. Only one wire is used to transfer bits
D. None of the above
Correct Answer:
B
Chapter: 73
Q933:
Which type of data transmission requires ‘n’ wires to send ‘n’ bits at one time?
A. Parallel Transmission
B. Serial Transmission
C. Bidirectional Transmission
D. None of the above
Correct Answer:
A
Chapter: 74
Q934:
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: 74
Q935:
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: 74
Q936:
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: 74
Q937:
In serial transmission, the number of communication channels used is _______.
A. ‘n’ channels
B. 1 channel
C. 2 channels
D. ‘n’ bits per channel
Correct Answer:
B
Chapter: 74
Q938:
What is the main disadvantage of serial transmission?
A. It requires more wires
B. Slower data transfer rate
C. Lower error detection
D. None of the above
Correct Answer:
B
Chapter: 74
Q939:
Which transmission method sends bits one after the other over a single channel?
A. Parallel transmission
B. Serial transmission
C. Synchronous transmission
D. Asynchronous transmission
Correct Answer:
B
Chapter: 74
Q940:
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