Multiple choice

During a TCP communication session, if the packets arrive to the destination out of order, what will happen to the original message?

  1. The packets will not be delivered.

  2. The packets will be retransmitted from the source.

  3. The packets will be delivered and reassembled at the destination.

  4. The packets will be delivered and not reassembled at the destination.
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C Correct answer
Explanation

TCP provides reliable, ordered delivery through sequence numbers in every segment. When packets arrive out of order, the receiving TCP buffer stores them until missing segments arrive, then reassembles everything into the original message. This reassembly happens automatically at the destination before data is delivered to the application.

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