A.Link-mode B.Dense mode C.Sparse mode D.Sparse-dense mode
A.224.0.0.0/24 B.239.128.0.0/10 C.239.192.0.0/14 D.224.0.1.0/38.255.255.255
A.Auto-RP B.Anycast RP C.Bootstrap router D.PIM sparse mode