The multicast packet from the 172.16.1.100 source must arrive on which interface on the R1 router for it to be forwarded out the other interfaces?

Assume that the R1 router is enabled for PIM-SM and receives a multicast packet sourced from 172.16.1.100, and the R1 router has multicast receivers on the Gi0/1, Gi0/2, Gi0/3 and Gi0/4 interfaces.

The multicast packet from the 172.16.1.100 source must arrive on which interface on the R1 router for it to be forwarded out the other interfaces?
A . Gi0/1
B . Gi0/2
C . Gi0/3
D . Gi0/4
E . Gi0/1 or Gi0/2 or Gi0/3 or Gi0/4
F .  Gi0/2 or Gi0/3
G .  Gi0/1 or Gi0/4

View Answer

Answer: A