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Computer Networks
Ospf
Q
In OSPF database descriptor packet, which field is used to detect a missing packet?
AA. Lsa header
BB. Ms
CC. Database descriptor sequence number
DD. Options
Correct Answer:
C. 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.
