Which of the following best describes the type of packets used by OSPF routers to exchange updates on a point-to-point link?

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Which of the following best describes the type of packets used by OSPF routers to exchange updates on a point-to-point link?
A . IP packets sent to an IP multicast address.
B . TCP packets sent to an IP multicast address.
C . IP packets sent to an IP unicast address.
D . UDP packets sent to an IP multicast address.

Answer: A