Multicast pim spare-mode send traffic overload.
Which feature reduces the multicast traffic in the access layer?
A . Filter at Boundaries
B . PIM Sparse-Mode
C . IGMP snooping
D . MSDP
Answer: C
Explanation:
Cisco Group Management Protocol (CGMP), Router Group Management Protocol (RGMP), and IGMP snooping efficiently constrain IP multicast in a Layer 2 switching environment.