Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q581: Modulation helps broadband transmission by allowing the use of _______ channels.
- A: bandpass
- B: low-pass
- C: high-pass
- D: narrow-band
View Answer
A
Q582: The purpose of modulation in broadband transmission is to make the signal compatible with _______ channels.
- A: bandpass
- B: baseband
- C: low-pass
- D: analog
View Answer
A
Q583: What is the main advantage of using a bandpass channel in broadband transmission?
- A: More available bandwidth
- B: More signal loss
- C: More complexity
- D: Reduced signal quality
View Answer
A
Q584: Which of the following is true about broadband transmission?
- A: It uses modulation for better bandwidth usage
- B: It only uses digital signals
- C: It uses baseband transmission for signals
- D: It does not require modulation
View Answer
A
Q585: Broadband transmission is often used to transmit signals because it allows for _______ channels.
- A: bandpass
- B: low-pass
- C: analog-only
- D: high-pass
View Answer
A
Q586: What is the primary cause of transmission impairment in signals?
- A: Attenuation
- B: Amplification
- C: Noise
- D: Distortion
View Answer
A
Q587: Which of the following is not a cause of transmission impairment?
- A: Attenuation
- B: Noise
- C: Heat
- D: Distortion
View Answer
C
Q588: What happens to a signal as it travels through a transmission medium?
- A: It remains unchanged
- B: It amplifies in strength
- C: It loses some of its energy
- D: It becomes digital
View Answer
C
Q589: Attenuation refers to the _______ of energy as a signal travels through a medium.
- A: gain
- B: loss
- C: reflection
- D: transformation
View Answer
B
Q590: Which device is used to compensate for signal attenuation?
- A: Amplifier
- B: Oscillator
- C: Filter
- D: Modulator
View Answer
A