Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q671: What is one of the main characteristics of network performance?
- A: Bandwidth
- B: Routing algorithms
- C: Packet size
- D: Protocol layers
View Answer
A
Q672: Which of the following measures the actual data transfer rate?
- A: Bandwidth
- B: Throughput
- C: Latency
- D: Signal-to-noise ratio
View Answer
B
Q673: Bandwidth can be measured in which two units?
- A: Hertz and bytes
- B: Hertz and bps
- C: Frames per second
- D: Packets per second
View Answer
B
Q674: If the bandwidth of a line is increased from 4 kHz to 8 kHz, what happens to the data transmission rate?
- A: It doubles
- B: It halves
- C: It remains the same
- D: It decreases
View Answer
A
Q675: A network link has a bandwidth of 10 Mbps but can only send 8 Mbps. What does 8 Mbps represent?
- A: Bandwidth
- B: Latency
- C: Throughput
- D: Signal degradation
View Answer
C
Q676: What is the bandwidth in Hertz of a line transmitting data at 4 kHz?
- A: 4 Hz
- B: 4 kHz
- C: 40 Hz
- D: 40 kHz
View Answer
B
Q677: How is bandwidth in bps defined?
- A: Range of frequencies
- B: Number of bits transmitted per second
- C: Time delay
- D: Noise level
View Answer
B
Q678: Which term refers to the range of frequencies in a composite signal?
- A: Throughput
- B: Bandwidth in Hertz
- C: Latency
- D: Signal quality
View Answer
B
Q679: A link with a bandwidth of 10 Mbps can send 12,000 frames per minute, each carrying 10,000 bits. What is the throughput?
- A: 12 Mbps
- B: 2 Mbps
- C: 10 Mbps
- D: 1.2 Mbps
View Answer
D
Q680: The bandwidth of a subscriber line for data transmission using a modem is usually measured in?
- A: Frames per second
- B: Hertz
- C: Bytes per second
- D: Bits per second
View Answer
D