Which Two Options Are True About the Impact Flooding Domain

Multiple Choice

Which two options are true about the impact flooding domain boundaries have when built in OSPF? (Choose two.)

A) They increase convergence time by adding the time required to run two full Shortest Path First computations on the area border routers.
B) They decrease convergence time by automatically summarizing reachability information transmitted through the network, thereby decreasing the number of routes that must be installed in each router's routing table.
C) They decrease convergence time by reducing the complexity and size of the shortest path trees in the individual areas.
D) They isolate network failures within a domain.