Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1281: Which of the following is a disadvantage of Wavelength-Division Multiplexing?
- A: High power consumption
- B: Requires precise optical components
- C: Limited data capacity
- D: Inefficient for fiber-optic communication
View Answer
B
Q1282: What happens to the combined optical signals in Wavelength-Division Multiplexing at the receiving end?
- A: They are transmitted as a single wavelength
- B: They are demultiplexed into separate wavelengths
- C: They are converted into electrical signals first
- D: They are discarded and retransmitted
View Answer
B
Q1283: What allows multiple signals to coexist in Wavelength-Division Multiplexing without interference?
- A: Unique time slots
- B: Separate wavelengths
- C: Different frequency bands
- D: Code-based separation
View Answer
B
Q1284: What is the digital process that allows multiple connections to share the high bandwidth of a link?
- A: Multiplexing
- B: Modulation
- C: Demodulation
- D: Encoding
View Answer
A
Q1285: Which technology enables multiple signals to be transmitted over a single communication link?
- A: Encryption
- B: Multiplexing
- C: Compression
- D: Routing
View Answer
B
Q1286: Fill in the blank: _______ is the process of combining multiple signals into one signal over a shared medium.
- A: Modulation
- B: Encoding
- C: Multiplexing
- D: Switching
View Answer
C
Q1287: Which type of multiplexing is commonly used for digital signals?
- A: Frequency-Division Multiplexing
- B: Time-Division Multiplexing
- C: Wavelength-Division Multiplexing
- D: Space-Division Multiplexing
View Answer
B
Q1288: What is the main benefit of using multiplexing?
- A: Reduces the number of communication channels
- B: Increases the cost of transmission
- C: Decreases the bandwidth of a link
- D: Enables multiple connections to share bandwidth
View Answer
D
Q1289: Fill in the blank: In _______ multiplexing, different signals are transmitted at different times over the same channel.
- A: Frequency-Division
- B: Time-Division
- C: Wavelength-Division
- D: Space-Division
View Answer
B
Q1290: Which of the following is NOT a type of multiplexing?
- A: Time-Division Multiplexing
- B: Frequency-Division Multiplexing
- C: Space-Division Multiplexing
- D: Packet Switching
View Answer
D