Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1231: Which multiplexing method is best suited for analog signals?
- A: Time-Division Multiplexing (TDM)
- B: Frequency-Division Multiplexing (FDM)
- C: Statistical Multiplexing
- D: Space-Division Multiplexing
View Answer
B
Q1232: Which of the following is a key characteristic of Frequency-Division Multiplexing (FDM)?
- A: It assigns unique time slots to each signal
- B: It requires signals to be digital
- C: It modulates signals onto different frequencies
- D: It cannot be used in wireless communication
View Answer
C
Q1233: What happens when multiple signals in FDM overlap in frequency?
- A: Data loss occurs
- B: Signals interfere with each other
- C: The system automatically corrects errors
- D: The bandwidth increases
View Answer
B
Q1234: In Frequency-Division Multiplexing (FDM), each signal occupies a separate _______.
- A: Time slot
- B: Frequency band
- C: Network channel
- D: Data packet
View Answer
B
Q1235: What type of technique is used when the bandwidth of a link is greater than the combined bandwidths of signals?
- A: Digital multiplexing
- B: Time-Division Multiplexing
- C: Frequency-Division Multiplexing
- D: Space-Division Multiplexing
View Answer
C
Q1236: Assume a voice channel occupies a bandwidth of 4 kHz. If we combine three voice channels into a link with 12 kHz bandwidth, what is the total frequency range needed?
- A: 16 kHz - 28 kHz
- B: 20 kHz - 32 kHz
- C: 24 kHz - 36 kHz
- D: 28 kHz - 40 kHz
View Answer
B
Q1237: If five channels, each with a 100-kHz bandwidth, are multiplexed with a 10 kHz guard band between channels, what is the minimum bandwidth required?
- A: 500 kHz
- B: 540 kHz
- C: 550 kHz
- D: 600 kHz
View Answer
C
Q1238: A multiplexing technique that divides the bandwidth into separate frequency bands is called?
- A: Code Division Multiplexing
- B: Frequency-Division Multiplexing
- C: Time-Division Multiplexing
- D: Space-Division Multiplexing
View Answer
B
Q1239: In Frequency-Division Multiplexing (FDM), what prevents interference between adjacent signals?
- A: Digital signals
- B: Guard bands
- C: Noise filtering
- D: Modulation
View Answer
B
Q1240: What is the main requirement for FDM to be effective?
- A: The total signal bandwidth must be less than the available channel bandwidth
- B: The link must be wireless
- C: The signals must be digital
- D: The bandwidth must be fixed
View Answer
A