Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q621: The delay of signal components can cause differences in _______ when it is not the same for all components.
- A: Phase
- B: Frequency
- C: Speed
- D: Amplitude
View Answer
A
Q622: What happens when the delay of signal components is not exactly the same?
- A: Distortion
- B: Amplification
- C: Attenuation
- D: Signal clarity
View Answer
A
Q623: In distortion, the _______ of the signal is altered as it passes through the transmission medium.
- A: Frequency
- B: Shape or form
- C: Intensity
- D: Phase shift
View Answer
B
Q624: Which of the following is a result of distortion in composite signals?
- A: All components arrive at the same time
- B: Delay differences between components
- C: Amplification of certain frequencies
- D: Decrease in signal strength
View Answer
B
Q625: Distortion in signals is often caused by differences in _______.
- A: Propagation speed
- B: Amplification factors
- C: Signal power
- D: Signal noise
View Answer
A
Q626: A difference in the delay of signal components can result in a change in the _______ of the signal.
- A: Phase
- B: Frequency
- C: Amplitude
- D: Duration
View Answer
A
Q627: The _______ of the signal is changed when distortion occurs during transmission.
- A: Shape or form
- B: Frequency
- C: Amplitude
- D: Propagation speed
View Answer
A
Q628: Distortion is likely to occur when the signal components have different _______ through the transmission medium.
- A: Propagation speeds
- B: Amplitudes
- C: Frequencies
- D: Durations
View Answer
A
Q629: What is one of the causes of impairment in signals?
- A: Attenuation
- B: Noise
- C: Signal amplification
- D: Reflection
View Answer
B
Q630: Thermal noise is caused by the random motion of _______.
- A: Electrons in a wire
- B: Magnetic fields
- C: Radio waves
- D: Acoustic signals
View Answer
A