Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2031: Fill in the blank: In a Linear Block Code, the XOR of the second and third codewords generates the _______ codeword.
- A: fifth
- B: fourth
- C: third
- D: first
View Answer
B
Q2032: What does the minimum Hamming distance \( d_{\text{min}} = 2 \) in a code scheme guarantee?
- A: The code detects 2 errors
- B: The code detects 1 error
- C: The code can detect up to 3 errors
- D: The code can correct 1 error
View Answer
B
Q2033: Which of the following is a key feature of Linear Block Codes?
- A: The XOR operation produces a valid codeword
- B: The codewords are never valid after XORing
- C: Only certain codewords are valid
- D: The XOR operation never produces a valid codeword
View Answer
A
Q2034: What is the significance of a minimum Hamming distance of 4 in error detection?
- A: The code can detect 3 errors
- B: The code can detect 4 errors
- C: The code can detect 2 errors
- D: The code can correct 2 errors
View Answer
A
Q2035: Fill in the blank: A minimum Hamming distance of 3 guarantees the detection of _______ errors.
- A: 1
- B: 2
- C: 3
- D: 4
View Answer
B
Q2036: What is the minimum Hamming distance of a code that can detect 5 errors?
- A: 5
- B: 4
- C: 6
- D: 3
View Answer
B
Q2037: Which of the following is the most common error-detecting code?
- A: Cyclic redundancy check
- B: Reed-Solomon code
- C: Linear block code
- D: Hamming code
View Answer
C
Q2038: In linear block codes, what is the typical relationship between the total number of bits (n) and data bits (k)?
- A: n = k
- B: n = k + 1
- C: n = k - 1
- D: n = 2k
View Answer
B
Q2039: The purpose of the extra parity bit in linear block codes is to _______.
- A: increase the number of bits in a message
- B: make the total number of 1s odd
- C: detect if an error has occurred
- D: encrypt the codeword
View Answer
C
Q2040: In the code C(5, 4), what do the numbers 5 and 4 represent?
- A: 5 parity bits, 4 data bits
- B: 5 total bits, 4 data bits
- C: 5 data bits, 4 parity bits
- D: 5 total bits, 4 parity bits
View Answer
B