Question 1 of 30
In a data center environment, a network engineer is troubleshooting multicast traffic issues. The engineer notices that some multicast groups are not being received by certain hosts. The multicast traffic is configured to use Protocol Independent Multicast (PIM) Sparse Mode. The engineer checks the PIM neighbor relationships and finds that the routers are correctly forming adjacencies. However, the multicast traffic is still not reaching all intended receivers. What could be the most likely cause of this issue?
The multicast group is not properly joined by the receivers due to IGMP configuration issues.
The routers are not configured with the correct multicast routing protocols.
The multicast traffic is being blocked by access control lists (ACLs) on the routers.
The network topology does not support multicast routing.

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