Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q3101: In SONET, lower-rate frames can be multiplexed into a higher-rate frame using _______.
- A: Time division multiplexing
- B: Frequency division multiplexing
- C: Statistical multiplexing
- D: Spatial division multiplexing
View Answer
A
Q3102: Which of the following is an example of SONET multiplexing?
- A: Three STS-1 signals combined into one STS-3 signal
- B: One STS-3 signal combined into one STS-12 signal
- C: Two STS-1 signals combined into one STS-6 signal
- D: Three STS-3 signals combined into one STS-1 signal
View Answer
A
Q3103: Fill in the blank: In SONET, three STS-1 signals can be multiplexed into one _______ signal.
- A: STS-3
- B: STS-12
- C: STS-6
- D: STS-1
View Answer
A
Q3104: Fill in the blank: In SONET, four STS-3 signals can be multiplexed into one _______ signal.
- A: STS-12
- B: STS-6
- C: STS-1
- D: STS-3
View Answer
A
Q3105: The process of combining lower-rate signals into higher-rate signals in SONET is called _______.
- A: Multiplexing
- B: Demultiplexing
- C: Signal shifting
- D: Signal aggregation
View Answer
A
Q3106: Which of the following is true about SONET multiplexing?
- A: Multiple lower-rate channels can be combined into a higher-rate channel.
- B: Only one lower-rate channel can be multiplexed into one higher-rate channel.
- C: Each SONET signal is fixed and cannot be combined.
- D: Multiplexing is not supported in SONET.
View Answer
A
Q3107: What is the primary purpose of multiplexing in SONET?
- A: To combine multiple lower-rate signals into one higher-rate signal
- B: To convert analog signals into digital
- C: To separate signals based on frequency
- D: To enhance the data security of each signal
View Answer
A
Q3108: Which of the following is NOT a multiplexing technique used in SONET?
- A: Time division multiplexing
- B: Frame-by-frame multiplexing
- C: Frequency division multiplexing
- D: Frame interleaving
View Answer
D
Q3109: Fill in the blank: In SONET, STS-1, STS-3, and STS-12 refer to different _______ rates.
- A: Signal
- B: Data
- C: Transmission
- D: Multiplexing
View Answer
A
Q3110: In SONET, the term "STS" stands for _______.
- A: Synchronous Transport Signal
- B: Synchronous Time Signal
- C: Secure Transmission System
- D: Synchronization Transport System
View Answer
A