Refer to the exhibit. Acme Corporation hired you as a network designer to upgrade their network so that it supports IPv4 and IPv6 multicast. Which two protocols are needed on the LAN switch? (Choose t

PIM sparse mode is a Layer 3 routing protocol that runs on routers to build multicast distribution trees between network segments and is not a switch-level mechanism for local multicast forwarding.

IGMP snooping enables the switch to inspect IGMP Join and Leave messages between IPv4 hosts and the multicast router, building a per-port forwarding table so multicast traffic is delivered only to ports with active receivers rather than flooded to all ports.

PIM snooping allows a switch to monitor PIM messages exchanged between routers to optimize multicast forwarding among routers, but it is not a fundamental requirement for supporting multicast listener management on the LAN.

Source Specific Multicast is a Layer 3 multicast delivery model extending PIM on routers to identify specific sources for multicast groups and is not a protocol that a LAN switch needs to support multicast forwarding.

MLD (Multicast Listener Discovery) snooping is the IPv6 equivalent of IGMP snooping - the switch inspects MLD messages to learn which ports have IPv6 multicast listeners and restricts forwarding accordingly, preventing unnecessary flooding of IPv6 multicast frames across the LAN segment.