Q. In OSPF database descriptor packet, which field is used to detect a missing packet?
✅ Correct Answer: (C)
database descriptor sequence number
Explanation: sequence number field is used to detect a missing packet. the packets are to be received in order of the sequence number, so if the receiver detects that there is a sequence number skipped or missing in the order, it stops processing the further received packets and informs the sender to retransmit the packets in sequence.