The OSPF Hello protocol performs which of the following tasks? (Choose two.)
A . It provides dynamic neighbor discovery.
B . It detects unreachable neighbors in 90 second intervals.
C . It maintains neighbor relationships.
D . It negotiates correctness parameters between neighboring interfaces.
E . It uses timers to elect the router with the fastest links as the designated router.
F . It broadcasts hello packets throughout the internetwork to discover all routers that are running OSP
Answer: AC