Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q771: What is a key limitation of multitransition line coding?
- A: High power consumption
- B: High synchronization
- C: Increased bandwidth usage
- D: Low efficiency
View Answer
C
Q772: Fill in the blank: ______ line coding schemes are best for minimizing DC components in the signal.
- A: Unipolar
- B: Polar
- C: Bipolar
- D: Multitransition
View Answer
C
Q773: What does block coding do in digital communication?
- A: Converts analog signals
- B: Changes a block of 'm' bits into 'n' bits
- C: Compresses data
- D: Eliminates redundancy
View Answer
B
Q774: In block coding, the condition n>mn > mn>m ensures ______.
- A: Compression
- B: Synchronization
- C: Security
- D: Bandwidth reduction
View Answer
B
Q775: What is the purpose of redundancy in block coding?
- A: Reducing noise
- B: Ensuring synchronization
- C: Saving bandwidth
- D: Increasing speed
View Answer
B
Q776: Fill in the blank: Block coding changes a block of ______ bits into a block of 'n' bits.
- A: 1
- B: m
- C: 2
- D: n
View Answer
B
Q777: Which of the following is a commonly used block coding technique?
- A: Pulse coding
- B: mB/nB encoding
- C: Digital signal coding
- D: Differential encoding
View Answer
B
Q778: Fill in the blank: The mB/nB encoding technique involves converting 'm' bits into ______ bits.
- A: Fewer
- B: Equal
- C: More
- D: Redundant
View Answer
C
Q779: Which characteristic of block coding helps ensure synchronization?
- A: Bandwidth efficiency
- B: Redundancy
- C: Error detection
- D: Compression
View Answer
B
Q780: What is one advantage of block coding in digital communication?
- A: Reduces error
- B: Improves synchronization
- C: Saves bandwidth
- D: Speeds up transmission
View Answer
B