Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q991: What happens to the amplitude in Binary Amplitude Shift Keying (BASK)?
- A: It remains constant
- B: It is varied based on digital data
- C: It changes the phase of the signal
- D: None of the above
View Answer
B
Q992: Which process involves changing one characteristic of an analog signal based on digital data?
- A: Digital-to-analog conversion
- B: Analog-to-digital conversion
- C: Signal amplification
- D: Data encoding
View Answer
A
Q993: Which of the following is not a characteristic of a sine wave?
- A: Amplitude
- B: Frequency
- C: Phase
- D: Bit rate
View Answer
D
Q994: What are the three main characteristics of a sine wave?
- A: Amplitude, Bit rate, Frequency
- B: Frequency, Amplitude, Phase
- C: Bit rate, Phase, Frequency
- D: Amplitude, Phase, Data rate
View Answer
B
Q995: In digital-to-analog conversion, which characteristic of the signal can be varied?
- A: Amplitude
- B: Frequency
- C: Phase
- D: All of the above
View Answer
D
Q996: The process of changing the amplitude of the carrier signal while keeping frequency and phase constant is called _______.
- A: Amplitude modulation
- B: Amplitude shift keying
- C: Phase shift keying
- D: Frequency shift keying
View Answer
B
Q997: Which of the following remains constant in Binary Amplitude Shift Keying (BASK)?
- A: Frequency and phase
- B: Amplitude and frequency
- C: Phase only
- D: None of the above
View Answer
A
Q998: The method of varying the frequency of a carrier signal to represent digital data is called _______.
- A: Frequency shift keying
- B: Phase modulation
- C: Amplitude modulation
- D: Digital encoding
View Answer
A
Q999: In phase shift keying (PSK), which characteristic of the carrier signal is changed?
- A: Frequency
- B: Phase
- C: Amplitude
- D: All of the above
View Answer
B
Q1000: What is the purpose of digital-to-analog conversion?
- A: To encode digital data as an analog signal
- B: To amplify an analog signal
- C: To compress a digital signal
- D: To decode an analog signal
View Answer
A