Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1271: In Wavelength-Division Multiplexing (WDM), how are different signals separated?
- A: By assigning different time slots
- B: By using different frequencies
- C: By assigning different wavelengths
- D: By using separate physical channels
View Answer
C
Q1272: Fill in the blank: _______ is a technique used to combine multiple optical signals into a single fiber-optic cable.
- A: Frequency-Division Multiplexing
- B: Wavelength-Division Multiplexing
- C: Time-Division Multiplexing
- D: Space-Division Multiplexing
View Answer
B
Q1273: Which of the following is NOT an advantage of Wavelength-Division Multiplexing?
- A: Increases fiber-optic cable efficiency
- B: Allows multiple signals to travel simultaneously
- C: Requires less bandwidth per signal
- D: Requires precise wavelength separation
View Answer
C
Q1274: What optical component is used in WDM to split and combine different wavelengths?
- A: Filter
- B: Diode
- C: Prism
- D: Modulator
View Answer
C
Q1275: What is the key feature of Wavelength-Division Multiplexing?
- A: It assigns different frequencies to signals
- B: It uses different wavelengths for transmission
- C: It divides signals based on time slots
- D: It encodes signals using unique codes
View Answer
B
Q1276: What is the purpose of using multiplexing in fiber-optic communication?
- A: To reduce power consumption
- B: To increase bandwidth utilization
- C: To eliminate signal loss
- D: To minimize interference
View Answer
B
Q1277: Which type of multiplexing is most suitable for fiber-optic communication?
- A: Time-Division Multiplexing
- B: Frequency-Division Multiplexing
- C: Wavelength-Division Multiplexing
- D: Space-Division Multiplexing
View Answer
C
Q1278: What is the main reason for using Wavelength-Division Multiplexing?
- A: To increase fiber-optic efficiency
- B: To reduce the number of transmission lines
- C: To enhance signal clarity
- D: To improve network security
View Answer
A
Q1279: Fill in the blank: In WDM, signals are transmitted using different _______.
- A: Frequencies
- B: Time slots
- C: Wavelengths
- D: Power levels
View Answer
C
Q1280: What is a key requirement for effective Wavelength-Division Multiplexing?
- A: Low bandwidth usage
- B: Precise wavelength separation
- C: Limited data channels
- D: High noise levels
View Answer
B