Which two statements are true of the OSPF link-state routing protocol? (Choose two.)
正解:C,D
Explanation/Reference: Explanation: The point of this question is the basis of OSPF. Incorrect answer A. OSPF send hello packets every 10 seconds, not the updates, OSPF sends triggered updates when a network change occurs. For OSPF, D Rother use the multicast address 224.0.0.6 to send packets to DR and BDR, only DR and BDR can get the information from this multicast address.