Which address are OSPF hello packets addressed to on point-to-point networks?
正解:A
Explanation/Reference: Explanation: Why does the show ip ospf neighbor Command Reveal Neighbors in the Init State? http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093f11.shtml OSPF hello packets have a destination address of 224.0.0.5 (the all ospf routers multicast address).