Open Shortes t Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working group of the Internet Engineering Task Force (IETF).<br /> Which two statements best describe the OSPF link - state routing pro tocol?()
A、OSPF sends updates every 10 seconds
B、OSPF sends triggered updates when a network change occurs
C、When a link state is changed, the router that detected the change creates a link - state advertisement (LSA) and propagates it to all OSPF devices using the 224.0.0.6 multicast address
D、OSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization