Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1291: What is the key characteristic of Frequency-Division Multiplexing (FDM)?
- A: Uses different time slots for signals
- B: Assigns different frequencies to signals
- C: Requires fiber-optic cables
- D: Uses digital signals only
View Answer
B
Q1292: In Time-Division Multiplexing (TDM), signals are separated based on _______.
- A: Frequency
- B: Time slots
- C: Wavelengths
- D: Amplitude
View Answer
B
Q1293: What type of multiplexing is commonly used in fiber-optic communication?
- A: Wavelength-Division Multiplexing
- B: Frequency-Division Multiplexing
- C: Time-Division Multiplexing
- D: Code-Division Multiplexing
View Answer
A
Q1294: What happens if there is no multiplexing in data transmission?
- A: Multiple signals can be transmitted efficiently
- B: The bandwidth will be fully utilized
- C: Only one signal can be transmitted at a time
- D: The transmission speed will increase
View Answer
C
Q1295: Which of the following multiplexing techniques is used in mobile communication?
- A: Wavelength-Division Multiplexing
- B: Time-Division Multiplexing
- C: Code-Division Multiplexing
- D: Space-Division Multiplexing
View Answer
C
Q1296: Fill in the blank: _______ allows different users to share the same communication channel by assigning different time slots to each user.
- A: Frequency-Division Multiplexing
- B: Time-Division Multiplexing
- C: Code-Division Multiplexing
- D: Space-Division Multiplexing
View Answer
B
Q1297: What is required at the receiving end of a multiplexed signal to separate the original signals?
- A: Demodulator
- B: Decoder
- C: Demultiplexer
- D: Amplifier
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C
Q1298: What is the main disadvantage of multiplexing?
- A: Reduces bandwidth usage
- B: Increases signal delay
- C: Decreases data transmission efficiency
- D: Requires multiple communication links
View Answer
B
Q1299: What is the role of a demultiplexer in a multiplexing system?
- A: Combines multiple signals into one
- B: Splits a single signal into multiple signals
- C: Increases bandwidth usage
- D: Encrypts the transmitted data
View Answer
B
Q1300: What is the process that allows multiple connections to share the high bandwidth of a link?
- A: Multiplexing
- B: Switching
- C: Encoding
- D: Modulation
View Answer
A