Question

Which field is NOT a field within an OSPF packet header?

(a) Packet length

(b) Router ID

(c) Authentication type

(d) Maxage time

Answer 1

Correct option is (d) Maxage time

To elaborate: The packet length field gives the length of the packet in bits. The Authentication type field gives the type of authentication used. The router ID field gives the ID of the source router of the packet. In an OSPF packet header, there is no field called Maxage time.