Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2131: To correct 10-bit errors in a packet, what should be the minimum Hamming distance?
- A: 11
- B: 20
- C: 21
- D: 10
View Answer
C
Q2132: Fill in the blank: To correct ‘t’ errors, the required minimum Hamming distance is ______.
- A: d = t
- B: d = 2t
- C: d = t + 1
- D: d = 2t + 1
View Answer
D
Q2133: What does the minimum Hamming distance represent in coding theory?
- A: Shortest code length
- B: Redundancy measure
- C: Number of bits in one symbol
- D: Minimum difference between valid codewords
View Answer
D
Q2134: How many redundant bits are needed as the required Hamming distance increases?
- A: Fewer bits
- B: More bits
- C: Same bits
- D: No bits needed
View Answer
B
Q2135: Which of the following is TRUE about error correction in real-time systems?
- A: It relies on retransmission
- B: It ignores errors
- C: It uses Hamming Distance to detect and correct errors
- D: It uses parity only
View Answer
C
Q2136: Fill in the blank: Hamming distance helps in ______.
- A: error propagation
- B: error correction
- C: packet switching
- D: encryption
View Answer
B
Q2137: What is the equation used to determine the minimum distance for error correction?
- A: d = t + 1
- B: d = 2t + 1
- C: d = 3t
- D: d = t * 2
View Answer
B
Q2138: What happens when the minimum Hamming distance is insufficient?
- A: Errors go undetected
- B: Transmission speed increases
- C: Data size reduces
- D: Redundancy increases
View Answer
A
Q2139: In FEC, if dmin = 2t + 1, what does "t" represent?
- A: Packet length
- B: Number of redundant bits
- C: Number of errors that can be corrected
- D: Codeword length
View Answer
C
Q2140: What is the benefit of using a high Hamming distance in coding?
- A: Reduced bandwidth
- B: Faster transmission
- C: More errors can be corrected
- D: Less data transmitted
View Answer
C