Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 147
Q2141:
Which of the following is a limitation of Forward Error Correction?
A. It cannot detect errors
B. It requires additional bandwidth
C. It uses encryption only
D. It introduces latency
Correct Answer:
B
Chapter: 147
Q2142:
Which field of networking most benefits from Hamming Distance calculations?
A. Firewall settings
B. Error handling and correction
C. Authentication
D. Compression
Correct Answer:
B
Chapter: 148
Q2143:
What operation is used in Forward Error Correction to compute R in the formula R = P1 + P2 + ... + PN?
A. AND
B. OR
C. XOR
D. NAND
Correct Answer:
C
Chapter: 148
Q2144:
Fill in the blank: The XOR operation is used in FEC to calculate ______ from the given packets.
A. Payload
B. Redundancy
C. Header
D. Sequence
Correct Answer:
B
Chapter: 148
Q2145:
If R = P1 + P2 + P3 + P4 using XOR, what is P2 equal to?
A. R - P1 - P3 - P4
B. P1 XOR P3 XOR P4 XOR R
C. R + P1 + P3 + P4
D. P1 * P3 * R
Correct Answer:
B
Chapter: 148
Q2146:
What technique allows some small chunks to be missing in multimedia transmission?
A. Encoding
B. Compression
C. Chunk Interleaving
D. Re-sending
Correct Answer:
C
Chapter: 148
Q2147:
Fill in the blank: In Chunk Interleaving, it is acceptable to lose ______ chunk(s) per packet.
A. All
B. More than two
C. One
D. None
Correct Answer:
C
Chapter: 148
Q2148:
Which error-handling technique helps in correcting burst errors using multiple rows and columns?
A. Bit stuffing
B. Hamming Interleaving
C. Interleaved Correction
D. Combined Hamming & Interleaving
Correct Answer:
D
Chapter: 148
Q2149:
To correct m × t bits of burst errors, we must use ______.
A. Bit stuffing and retransmission
B. Chunking and lossless compression
C. Redundancy and masking
D. Hamming codes with m-row interleaving
Correct Answer:
D
Chapter: 148
Q2150:
Fill in the blank: In interleaving, after creating packets, we send bits ______.
A. row-wise
B. packet-wise
C. column-wise
D. randomly
Correct Answer:
C
Chapter: 148
Q2151:
Which combination increases error correction capability in multimedia streams?
A. ARQ + delay
B. Checksum + CRC
C. Hamming + Interleaving
D. Redundancy + encryption
Correct Answer:
C
Chapter: 148
Q2152:
What does the “t” represent in a packet that can correct “t” bit errors using Hamming distance?
A. Number of bits lost
B. Number of packets sent
C. Number of errors that can be corrected
D. Number of chunks combined
Correct Answer:
C
Chapter: 148
Q2153:
What is a benefit of combining high and low resolution packets in transmission?
A. More redundancy
B. Better compression
C. Error correction and efficient playback
D. Decreased delay
Correct Answer:
C
Chapter: 148
Q2154:
Fill in the blank: In the compounding method, high-resolution packets are combined with ______ resolution duplicates.
A. random
B. low
C. medium
D. super-high
Correct Answer:
B
Chapter: 148
Q2155:
How many low-resolution packets can be created from five high-resolution packets, according to the content?
A. Two
B. Three
C. Four
D. Five
Correct Answer:
C
Chapter: 148
Q2156:
What is the role of redundant low-resolution packets in compounding?
A. Data reordering
B. Encryption
C. Error reproduction
D. Data recovery
Correct Answer:
D
Chapter: 148
Q2157:
Which of the following is an FEC technique that supports real-time multimedia transmission?
A. Retransmission
B. Interleaving only
C. Chunk drop only
D. Combining redundancy and error correction
Correct Answer:
D
Chapter: 148
Q2158:
Fill in the blank: Using XOR operations in FEC enables the receiver to ______.
A. encrypt packets
B. remove headers
C. reconstruct missing packets
D. synchronize clocks
Correct Answer:
C
Chapter: 148
Q2159:
Which error correction method is preferred when delay is not acceptable?
A. Retransmission
B. Forward Error Correction
C. Cyclic Codes
D. Back Propagation
Correct Answer:
B
Chapter: 148
Q2160:
In the formula Pi = P1 + P2 + … + R + … + PN, what does "+" denote?
A. OR
B. XOR
C. AND
D. NAND
Correct Answer:
B