Computer Science for IGCSE & O level - Data Transmission (Section 2 - No. 4)
What is the function of the 'sequence number' in a packet's header?
To indicate the number of packets.
To ensure the packets are reassembled in the right order.
To encrypt the data.
To calculate the size of the packets.
Explication
Sequence numbers help put the packets back together correctly at their destination.