Refer to the exhibit. The network is configured with OSPF. A networking team just connected a streaming multicast server to R7, and they now must enable access for users throughout the network to…

Excluding the LAN segment where R5, R6, R3, and R4 are connected would prevent multicast traffic from reaching potential receivers in that critical part of the network.

Implementing PIM-DM only on the link between the server and R7 is insufficient as it would only enable multicast on that single link, not across the entire network to reach users.

To enable multicast routing for a streaming server and allow users throughout the network to receive the stream, all routers that need to participate in forwarding multicast traffic must have Protocol Independent Multicast - Dense Mode (PIM-DM) enabled on all interfaces that are part of the multicast routing domain. PIM-DM initially floods multicast traffic to all segments, then prunes branches where receivers are not present, requiring it to be active across the entire relevant network.

Implementing PIM-DM only on the specified LAN network segment is incomplete and would not allow multicast traffic to originate from R7 or reach other parts of the network.