Which TCP mechanism is used to detect transmission errors in a segment?

Options

  • A. Checksum
  • B. Port number
  • C. Sequence number
  • D. Window size
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. Checksum

Detailed Explanation

Correct Answer: Checksum.

TCP uses a 16-bit checksum to detect corruption in its header and data. If a segment is found to be corrupted, it is discarded and reliable delivery mechanisms can lead to retransmission.