Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1221: Multiplexing allows multiple _______ to share a single communication channel.
- A: Networks
- B: Signals
- C: Users
- D: Routers
View Answer
B
Q1222: What are the main categories of multiplexing?
- A: Space and Time Multiplexing
- B: Digital and Analog Multiplexing
- C: Frequency and Time Division Multiplexing
- D: Signal and Wave Multiplexing
View Answer
C
Q1223: Frequency-Division Multiplexing (FDM) is an example of _______ multiplexing.
- A: Analog
- B: Digital
- C: Optical
- D: Hybrid
View Answer
A
Q1224: Which technique is used when the bandwidth of a link is greater than the combined bandwidths of signals?
- A: Time-Division Multiplexing (TDM)
- B: Frequency-Division Multiplexing (FDM)
- C: Code Division Multiple Access (CDMA)
- D: Wavelength Division Multiplexing (WDM)
View Answer
B
Q1225: In Frequency-Division Multiplexing (FDM), signals from different devices modulate _______.
- A: The same frequency
- B: Different carrier frequencies
- C: A single data stream
- D: Digital pulses
View Answer
B
Q1226: What happens to modulated signals in Frequency-Division Multiplexing (FDM)?
- A: They are amplified separately
- B: They are converted into digital signals
- C: They are combined into a single composite signal
- D: They are encrypted for security
View Answer
C
Q1227: Which type of multiplexing is commonly used in radio and TV broadcasting?
- A: Time-Division Multiplexing (TDM)
- B: Frequency-Division Multiplexing (FDM)
- C: Code Division Multiplexing (CDM)
- D: Wavelength Division Multiplexing (WDM)
View Answer
B
Q1228: The main requirement for using Frequency-Division Multiplexing (FDM) is that the link’s bandwidth must be _______.
- A: Less than the total bandwidth of the signals
- B: Equal to the total bandwidth of the signals
- C: Greater than the total bandwidth of the signals
- D: Unaffected by the number of signals
View Answer
C
Q1229: Which of the following is an example of FDM in real-world applications?
- A: Ethernet networking
- B: Optical fiber communication
- C: AM and FM radio broadcasting
- D: Serial data transmission
View Answer
C
Q1230: In Frequency-Division Multiplexing (FDM), each signal is modulated onto _______.
- A: The same carrier wave
- B: A different carrier frequency
- C: A digital time slot
- D: A shared data packet
View Answer
B