Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 141
Q2001:
Fill in the blank: The Hamming Distance between two words is the number of _______ between their corresponding bits.
A. errors
B. differences
C. identical bits
D. changes
Correct Answer:
B
Chapter: 141
Q2002:
What is the Hamming Distance between the two words 000 and 011?
A. 1
B. 2
C. 3
Correct Answer:
A
Chapter: 141
Q2003:
How is the Hamming Distance between two words calculated?
A. By counting the number of matching bits
B. By counting the number of different bits
C. By adding the lengths of the words
D. By multiplying the number of bits in the words
Correct Answer:
B
Chapter: 141
Q2004:
Fill in the blank: Hamming Distance is used in error detection to find the _______ between a received codeword and the sent codeword.
A. errors
B. changes
C. differences
D. identical bits
Correct Answer:
C
Chapter: 141
Q2005:
What is the Hamming Distance between the two words 10101 and 11110?
A. 2
B. 3
C. 1
D. 4
Correct Answer:
B
Chapter: 141
Q2006:
What does a Hamming Distance of 2 between two words indicate?
A. Two words are identical
B. There is one bit error between the words
C. Two bits have been corrupted between the words
D. All bits are different between the words
Correct Answer:
C
Chapter: 141
Q2007:
Fill in the blank: A higher Hamming Distance between two codewords indicates _______ between the two codewords.
A. More similarity
B. Fewer errors
C. More differences
D. More identical bits
Correct Answer:
C
Chapter: 141
Q2008:
What happens if the Hamming Distance between two codewords is 0?
A. The codewords are identical
B. There are no errors
C. The codewords are invalid
D. There is one bit error
Correct Answer:
A
Chapter: 141
Q2009:
Fill in the blank: If the Hamming Distance between two words is 3, this means that _______ bits are different between the two words.
A. 1
B. 2
C. 3
D. 4
Correct Answer:
C
Chapter: 141
Q2010:
What can be concluded if the Hamming Distance between two words is greater than 1?
A. The words are similar
B. There are no errors
C. The words are significantly different
D. There is exactly one bit error
Correct Answer:
C
Chapter: 141
Q2011:
Which of the following is used to calculate Hamming Distance?
A. Bitwise XOR operation
B. Bitwise AND operation
C. Bitwise OR operation
D. None of the above
Correct Answer:
A
Chapter: 141
Q2012:
Fill in the blank: To calculate Hamming Distance, you compare each bit of two words and count the number of _______ between the corresponding bits.
A. errors
B. differences
C. identical bits
D. changes
Correct Answer:
B
Chapter: 141
Q2013:
What is the significance of the Hamming Distance when evaluating error correction methods?
A. Hamming Distance determines the number of bits that must be changed to correct errors
B. It determines the length of the codewords
C. It calculates the total number of valid codewords
D. None of the above
Correct Answer:
A
Chapter: 141
Q2014:
If two codewords have a Hamming Distance of 3, how many bits would need to be changed to convert one codeword into the other?
A. 1
B. 2
C. 3
D. 4
Correct Answer:
C
Chapter: 141
Q2015:
What is the Hamming Distance between the following pair of words: 1101 and 1011?
A. 1
B. 2
C. 3
D. 4
Correct Answer:
B
Chapter: 141
Q2016:
Fill in the blank: In error detection, the Hamming Distance helps to determine how many _______ occurred during transmission.
A. errors
B. bits
C. changes
D. none of the above
Correct Answer:
A
Chapter: 142
Q2017:
What is the minimum Hamming distance of a code that guarantees the detection of up to 3 errors?
A. 1
B. 2
C. 3
D. 4
Correct Answer:
B
Chapter: 142
Q2018:
Fill in the blank: The minimum Hamming distance \( d_{\text{min}} \) determines the _______ between all possible pairs of codewords.
A. smallest error
B. highest error
C. distance
D. highest similarity
Correct Answer:
C
Chapter: 142
Q2019:
In a code scheme with \( d_{\text{min}} = 4 \), how many errors can be detected?
A. 1
B. 2
C. 3
D. 4
Correct Answer:
B
Chapter: 142
Q2020:
What does \( d_{\text{min}} = s+1 \) represent in error detection?
A. The number of bits in the codeword
B. The minimum Hamming distance
C. The number of errors that can be corrected
D. The number of valid codewords
Correct Answer:
B