Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 144
Q2061:
What is the result of cyclically left-shifting the codeword 1011000?
A. 1100001
B. 110001
C. 1000001
D. 101001
Correct Answer:
B
Chapter: 144
Q2062:
Fill in the blank: In a cyclic code, the number of codewords remains _______ even after cyclic shifts.
A. double
B. decreasing
C. constant
D. random
Correct Answer:
C
Chapter: 144
Q2063:
Cyclic codes are particularly useful in _______.
A. Quantum computing
B. Error detection and correction
C. Audio processing
D. Image compression
Correct Answer:
B
Chapter: 144
Q2064:
If 1011000 is a codeword in a cyclic code, which of the following is guaranteed to also be a codeword?
A. 1010001
B. 1100100
C. 110001
D. 1110
Correct Answer:
C
Chapter: 144
Q2065:
What type of shifting is applied in cyclic codes to generate new valid codewords?
A. Logical shift
B. Arithmetic shift
C. Bit inversion
D. Cyclic shift
Correct Answer:
D
Chapter: 144
Q2066:
Fill in the blank: Cyclic codes maintain their _______ even after rotation.
A. length and parity
B. original parity
C. parity check equations
D. error rate
Correct Answer:
A
Chapter: 144
Q2067:
Which of the following is NOT true about cyclic codes?
A. They are a type of linear block code
B. They produce valid codewords upon rotation
C. They always generate shorter codewords
D. They are useful in communication systems
Correct Answer:
C
Chapter: 144
Q2068:
If a codeword 1100101 is cyclically shifted to the left, the new codeword would be _______.
A. 1001011
B. 1001110
C. 1001010
D. 1001011
Correct Answer:
A
Chapter: 144
Q2069:
Fill in the blank: Special linear block codes with cyclic property are useful because they simplify _______.
A. key generation
B. circuit design
C. error detection and correction
D. transmission speeds
Correct Answer:
C
Chapter: 144
Q2070:
Cyclic codes are also known for being _______ in hardware implementation.
A. expensive
B. complex
C. efficient
D. slow
Correct Answer:
C
Chapter: 144
Q2071:
Which of the following best describes the nature of cyclic codes?
A. Unreliable
B. Probabilistic
C. Deterministic
D. Random
Correct Answer:
C
Chapter: 144
Q2072:
What happens if you cyclically shift a codeword in a non-cyclic linear block code?
A. It becomes a new valid codeword
B. It becomes shorter
C. It becomes invalid
D. It is unchanged
Correct Answer:
C
Chapter: 144
Q2073:
Fill in the blank: The cyclic property of a code ensures that a left-shifted version of a codeword is still _______.
A. invalid
B. unchanged
C. encrypted
D. valid
Correct Answer:
D
Chapter: 144
Q2074:
Cyclic codewords help in _______ implementation of encoders and decoders.
A. digital
B. serial
C. simple
D. complex
Correct Answer:
C
Chapter: 144
Q2075:
What will be the outcome if 1001101 is cyclically shifted to the left?
A. 11011
B. 11010
C. 11101
D. 110100
Correct Answer:
A
Chapter: 144
Q2076:
In cyclic codes, codeword shifting helps in _______ detection.
A. parity
B. bit
C. error
D. encryption
Correct Answer:
C
Chapter: 144
Q2077:
Fill in the blank: In cyclic codes, shifting all bits one position to the left and wrapping around is known as _______.
A. linear shift
B. cyclic left shift
C. parity check
D. coding technique
Correct Answer:
B
Chapter: 145
Q2078:
What does CRC stand for in the context of error detection?
A. Code Rotation Circuit
B. Cyclic Redundancy Check
C. Central Register Code
D. Cyclic Repetition Coding
Correct Answer:
B
Chapter: 145
Q2079:
Which type of networks commonly use CRC for error detection?
A. Cellular networks
B. Satellite networks
C. LANs and WANs
D. Private Intranets
Correct Answer:
C
Chapter: 145
Q2080:
Fill in the blank: CRC is a subset of _______.
A. cyclic codes
B. linear search
C. rotating codes
D. recursive functions
Correct Answer:
A