Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 63
Q801:
Block coding ensures _______ to improve synchronization.
A. redundancy
B. data compression
C. error correction
D. security
Correct Answer:
A
Chapter: 63
Q802:
What does Block coding improve in line coding performance?
A. synchronization
B. processing speed
C. security
D. error handling
Correct Answer:
A
Chapter: 63
Q803:
Block coding changes a block of ‘m’ bits into a block of ‘n’ bits, where _______ is greater than ‘m’.
A. ‘n’
B. ‘m’
C. ‘x’
D. ‘k’
Correct Answer:
A
Chapter: 63
Q804:
Which of the following is true about Block coding?
A. It improves line coding performance.
B. It reduces redundancy.
C. It uses less bits for encoding.
D. It doesn't affect synchronization.
Correct Answer:
A
Chapter: 63
Q805:
Redundancy in Block coding is needed to ensure _______.
A. synchronization
B. accuracy
C. security
D. speed
Correct Answer:
A
Chapter: 63
Q806:
In mB/nB encoding technique, ‘m’ refers to the _______ of bits in the input block.
A. number of bits
B. length of data
C. frequency of transmission
D. none
Correct Answer:
A
Chapter: 63
Q807:
In Block coding, the value of ‘n’ must be _______ than ‘m’.
A. greater
B. less
C. none
D. equals
Correct Answer:
A
Chapter: 63
Q808:
Block coding technique is used to encode _______ data.
A. blocks of bits
B. individual bits
C. large files
D. text documents
Correct Answer:
A
Chapter: 63
Q809:
Which of the following is true about Block coding in terms of synchronization?
A. It improves synchronization by introducing redundancy.
B. It reduces redundancy in synchronization.
C. It doesn't affect synchronization.
D. It provides error-free synchronization.
Correct Answer:
A
Chapter: 63
Q810:
Biphase schemes are suitable for _______.
A. LAN
B. Long Distance
C. Mobile Networks
D. WAN
Correct Answer:
A
Chapter: 64
Q811:
Block Coding + NRZ-I solves synchronization issues but has a _______ component.
A. DC
B. High-frequency
C. Low-frequency
D. Noise
Correct Answer:
A
Chapter: 64
Q812:
Which of the following is used to solve the synchronization issue in Block Coding + NRZ-I?
A. Scrambling
B. NRZ-I encoding
C. AMI encoding
D. Bipolar AMI
Correct Answer:
B
Chapter: 64
Q813:
The system requires the insertion of pulses based on _______ rules.
A. scrambling
B. AMI
C. encoding
D. decoding
Correct Answer:
A
Chapter: 64
Q814:
Which of the following coding schemes has a narrow bandwidth and no DC component?
A. Bipolar AMI
B. NRZ-I
C. Block Coding
D. Phase Encoding
Correct Answer:
A
Chapter: 64
Q815:
Biphase schemes are _______ for long distance transmission.
A. not suitable
B. suitable
C. ideal
D. none of the above
Correct Answer:
A
Chapter: 64
Q816:
What does Bipolar AMI coding aim to address in terms of bandwidth?
A. It reduces bandwidth.
B. It increases bandwidth.
C. It reduces synchronization issues.
D. It improves error detection.
Correct Answer:
A
Chapter: 64
Q817:
In Bipolar AMI encoding, what is the primary issue that needs to be addressed?
A. Synchronization bandwidth
B. DC component
C. Signal loss
D. Noise
Correct Answer:
A
Chapter: 64
Q818:
Which coding method is used to resolve the synchronization issues in long-distance communication?
A. Block Coding
B. NRZ-I
C. Scrambling
D. AMI
Correct Answer:
A
Chapter: 64
Q819:
Scrambling is used to ensure _______ in encoding schemes.
A. synchronization
B. data integrity
C. low bandwidth
D. high frequency
Correct Answer:
A
Chapter: 64
Q820:
Bipolar AMI is associated with a _______ bandwidth.
A. narrow wide
B. high
C. normal
Correct Answer:
A