Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1011: What type of modulation uses both frequency and phase simultaneously?
- A: Quadrature amplitude modulation
- B: Binary phase shift keying
- C: Binary amplitude shift keying
- D: Digital filtering
View Answer
A
Q1012: If an analog signal carries 4 bits per signal element and 2000 signal elements are transmitted per second, the bit rate is _______.
- A: 2000 bps
- B: 4000 bps
- C: 8000 bps
- D: 16000 bps
View Answer
C
Q1013: What are the two basic issues to review before discussing digital-to-analog modulation methods?
- A: Bit and Baud rates, and the Carrier Signal
- B: Phase and Frequency
- C: Amplitude and Modulation
- D: Data Rate and Signal Strength
View Answer
A
Q1014: In analog transmission, the baud rate is _______ compared to the bit rate.
- A: greater than
- B: equal to
- C: less than or equal to
- D: unrelated to
View Answer
C
Q1015: What is the relationship between bandwidth required and signal rate in most cases?
- A: Directly proportional
- B: Inversely proportional
- C: Equal to
- D: Independent of
View Answer
A
Q1016: An analog signal carries 4 bits per signal element. If 1000 signal elements are sent per second, what is the bit rate?
- A: 4000 bps
- B: 8000 bps
- C: 1000 bps
- D: 2000 bps
View Answer
B
Q1017: If the bit rate is 8000 bps and the baud rate is 1000, how many bits are carried per signal element?
- A: 4
- B: 6
- C: 8
- D: 10
View Answer
C
Q1018: What is the main function of a carrier signal in digital-to-analog conversion?
- A: Carry the data
- B: Filter noise
- C: Amplify the signal
- D: Correct errors
View Answer
A
Q1019: In analog transmission, which aspect ensures proper synchronization?
- A: Bit Rate
- B: Baud Rate
- C: Carrier Signal
- D: Signal Element
View Answer
C
Q1020: How many data elements are carried by each signal element in a bit rate of 8000 bps and baud rate of 1000?
- A: 4
- B: 6
- C: 8
- D: 10
View Answer
C