Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
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
View Answer
A
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
View Answer
C
Q683: What does latency define in a network?
- A: Bandwidth
- B: Delay in message delivery
- C: Transmission rate
- D: Signal quality
View Answer
B
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
View Answer
A
Q685: What is the formula for calculating latency?
- A: Bandwidth + Throughput
- B: Propagation + Transmission + Queuing + Processing delay
- C: Distance ÷ Speed
- D: Bits ÷ Frames
View Answer
B
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
View Answer
B
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
View Answer
A
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
View Answer
B
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
View Answer
B
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
View Answer
A