Error Detection and Correction Quiz

Which of the following is an error-detection method?

• Parity Check

• Hamming Code

• Checksum

• Both a and c

What is the primary purpose of error detection in data communication?

• To encrypt data

• To ensure error-free transmission

• To identify errors during data transmission

• To retransmit the entire data

In cyclic redundancy check (CRC), what is appended to the data at the sender's end?

• Random bits

• Parity bits

• Redundant bits (remainder)

• Encrypted code

Which error-detection technique uses a modulo-2 division process?

• Hamming Code

• Checksum

• Cyclic Redundancy Check (CRC)

• Parity Check

Which of the following is an error-correction technique?

• Automatic Repeat Request (ARQ)

• Parity Check

• CRC

• Checksum

What is the main advantage of Hamming Code?

• It can detect and correct single-bit errors.

• It can only detect multiple-bit errors.

• It is simpler than parity checks.

• It requires no additional bits.

In a parity check, which of the following types of parity can be used?

• Odd parity

• Even parity

• Both a and b

• None of the above

What is the key difference between error detection and error correction?

• Error detection finds errors, and error correction fixes them.

• Error correction only detects errors.

• Error detection works only for wired networks.

• Error correction needs no extra bits.

What is the basic principle behind the Checksum method?

• Adding binary values to verify data integrity

• Dividing data by a fixed polynomial

• Using redundant codes for detection

• Sending duplicate copies of data

Which technique is used in TCP for error control?

• ARQ

• CRC

• Hamming Code

• Checksum