Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1211: Which technique allows multiple signals to share a single communication channel?
- A: Encoding
- B: Decoding
- C: Multiplexing
- D: Modulation
View Answer
C
Q1212: Time Division Multiplexing (TDM) is an example of _______.
- A: Analog multiplexing
- B: Digital multiplexing
- C: Frequency-based multiplexing
- D: Signal attenuation
View Answer
B
Q1213: Which multiplexing technique is commonly used in fiber-optic communication?
- A: Time Division Multiplexing (TDM)
- B: Frequency Division Multiplexing (FDM)
- C: Wavelength Division Multiplexing (WDM)
- D: Pulse Code Modulation (PCM)
View Answer
C
Q1214: Frequency Division Multiplexing (FDM) works by _______.
- A: Assigning each signal a unique time slot
- B: Using different frequencies for different signals
- C: Converting signals into digital format
- D: Sending one signal at a time
View Answer
B
Q1215: Which of the following is NOT an advantage of multiplexing?
- A: Efficient bandwidth utilization
- B: Cost reduction
- C: Reduced network traffic
- D: Simultaneous data transmission
View Answer
C
Q1216: In Time Division Multiplexing (TDM), time slots are _______.
- A: Fixed for each signal
- B: Randomly assigned
- C: Shared dynamically
- D: Used only when required
View Answer
A
Q1217: Which technique is used when multiple signals share a communication medium based on frequency separation?
- A: Time Division Multiplexing (TDM)
- B: Frequency Division Multiplexing (FDM)
- C: Space Division Multiplexing (SDM)
- D: Code Division Multiplexing (CDM)
View Answer
B
Q1218: Which of the following is a disadvantage of using multiple individual links for each new channel?
- A: Increased cost
- B: Reduced bandwidth usage
- C: Enhanced security
- D: Lower signal interference
View Answer
A
Q1219: Which type of multiplexing is commonly used in cellular networks?
- A: Space Division Multiplexing (SDM)
- B: Code Division Multiple Access (CDMA)
- C: Amplitude Modulation (AM)
- D: Pulse Width Modulation (PWM)
View Answer
B
Q1220: What is the process of simultaneous transmission of multiple signals across a single data link called?
- A: Modulation
- B: Multiplexing
- C: Demodulation
- D: Encoding
View Answer
B