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Question 95

A network engineer recently deployed a wireless network for users at a new office to join video conferences wirelessly. The existing network consists of routers that are configured for EIGRP and BGP, which are located at several data centers in different physical locations. The engineer configured PIM-SSM within a single domain from a single source. However, during the testing phase, the video conference failed to work for any of the users. The IPs are reachable and firewalls in the network are configured correctly to allow the traffic. Which action resolves the issue?

    Correct Answer: C

    To resolve the issue with the video conference failing to work for any users despite IP reachability and correct firewall configurations, it's crucial to address the multicast routing aspect. Given that the network is configured with PIM-SSM (Source-Specific Multicast), the devices need to participate correctly in the multicast distribution tree. Configuring the devices to send join messages toward a multicast Shortest Path Tree (SPT) enables them to correctly join the source-specific multicast stream, ensuring appropriate data delivery paths and resolving the video conference connectivity issue.

Discussion
SeeleOption: C

A B D are incorrect, and C is most likely trying hard not to say "configure IGMPv3". In any case, C is the best answer.

DUsooOption: C

This is tricky Q as PIM-SSM best supports solution "one-to-many" and video conference is "many-to-many" solution. Best way is to reconfigure it to BIDIR-PIM, but we do not have this option here. So if this Q is related to IGMPv3 as "serbam_17" mentioned, then Yes. Should be option "C". But who knows :-)

serban_17

the answer probably wants to say to configure IGMPv3...