Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 51
Q681:
Fill in the blank: ______ measures the range of frequencies in a composite signal.
A. Bandwidth in Hertz
B. Bandwidth in bps
C. Throughput
D. Latency
Correct Answer:
A
Chapter: 51
Q682:
Fill in the blank: A network with a bandwidth of B bps can only send T bps through the link, with T always _______ B.
A. greater than
B. equal to
C. less than
D. unrelated to
Correct Answer:
C
Chapter: 52
Q683:
What does latency define in a network?
A. Bandwidth
B. Delay in message delivery
C. Transmission rate
D. Signal quality
Correct Answer:
B
Chapter: 52
Q684:
Latency is made up of which components?
A. Propagation, transmission, queuing, and processing time
B. Transmission time only
C. Processing time only
D. Queuing time only
Correct Answer:
A
Chapter: 52
Q685:
What is the formula for calculating latency?
A. Bandwidth + Throughput
B. Propagation + Transmission + Queuing + Processing delay
C. Distance ÷ Speed
D. Bits ÷ Frames
Correct Answer:
B
Chapter: 52
Q686:
Fill in the blank: ______ measures the time it takes for a message to arrive at its destination.
A. Throughput
B. Latency
C. Bandwidth
D. Processing speed
Correct Answer:
B
Chapter: 52
Q687:
What is the propagation time if the distance between two points is 12,000 km, with a propagation speed of 2.4 × 10^8 m/s?
A. 50 ms
B. 100 ms
C. 25 ms
D. 75 ms
Correct Answer:
A
Chapter: 52
Q688:
A network with a bandwidth of 10 Mbps can pass 12,000 frames per minute, each carrying 10,000 bits. What is the throughput?
A. 1 Mbps
B. 2 Mbps
C. 5 Mbps
D. 10 Mbps
Correct Answer:
B
Chapter: 52
Q689:
Fill in the blank: ______ is the dominant factor for a short message with high bandwidth.
A. Transmission time
B. Propagation time
C. Latency
D. Bandwidth
Correct Answer:
B
Chapter: 52
Q690:
Calculate the transmission time for a 2.5-KB message if the network bandwidth is 1 Gbps.
A. 0.020 ms
B. 0.050 ms
C. 0.010 ms
D. 0.100 ms
Correct Answer:
A
Chapter: 52
Q691:
For a 5-MB message sent over a network with a bandwidth of 1 Mbps, what is the transmission time?
A. 10 s
B. 20 s
C. 40 s
D. 50 s
Correct Answer:
C
Chapter: 52
Q692:
What is the propagation time if the distance is 12,000 km, and light travels at 2.4 × 10^8 m/s?
A. 50 ms
B. 60 ms
C. 40 ms
D. 45 ms
Correct Answer:
A
Chapter: 52
Q693:
Which factor dominates for a large message sent over a low-bandwidth network?
A. Transmission time
B. Propagation time
C. Queuing delay
D. Processing delay
Correct Answer:
A
Chapter: 52
Q694:
Fill in the blank: Throughput is the measure of ______.
A. Theoretical capacity
B. Actual data transfer rate
C. Signal quality
D. Frame size
Correct Answer:
B
Chapter: 52
Q695:
Calculate the propagation time for a 12,000 km cable with a propagation speed of 2.4 × 10^8 m/s.
A. 45 ms
B. 50 ms
C. 60 ms
D. 55 ms
Correct Answer:
B
Chapter: 53
Q696:
What does the Bandwidth-Delay Product define?
A. Link capacity
B. Number of bits that can fill a link
C. Speed of the network
D. Data size
Correct Answer:
B
Chapter: 53
Q697:
Fill in the blank: ______ is the product of bandwidth and delay.
A. Jitter
B. Bandwidth-Delay Product
C. Throughput
D. Latency
Correct Answer:
B
Chapter: 53
Q698:
In the analogy of a pipe, what does the cross-section represent?
A. Bandwidth
B. Delay
C. Throughput
D. Latency
Correct Answer:
A
Chapter: 53
Q699:
In the analogy of a pipe, what does the length of the pipe represent?
A. Bandwidth
B. Delay
C. Jitter
D. Latency
Correct Answer:
B
Chapter: 53
Q700:
What is jitter in networking?
A. Variation in packet delays
B. Total delay in packet transmission
C. Bandwidth-Delay Product
D. Network speed
Correct Answer:
A