Which field in a TCP header is used to identify the application process at the destination?

Options

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

Correct Answer (Detailed Explanation is Below)

B. Destination port number

Detailed Explanation

Correct Answer: Destination port number.

The destination port number identifies the receiving application or service on the destination device. TCP uses port numbers for process-to-process communication.