多选题Which two multicast protocol statements are true？ （Choose two.） （）ADense mode multicast requires explicit join messages from their members.BDense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted tr
题目
多选题
Which two multicast protocol statements are true？ （Choose two.） （）
A
Dense mode multicast requires explicit join messages from their members.
B
Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted traffic.
C
Sparse mode multicast uses a pull model to send multicast traffic to where it is requested.
D
Sparse mode uses reverse path forwarding （RPF） to prune off redundant flows.
E
The primary use of sparse mode multicast is for test labs and router performance testing.