350-501 Question #515: Real Exam Question with Answer & Explanation

Question

A company uses PIM-SM multicast with IGMPv2 to stream training videos from a server in one network to hosts in a different network. As the company has grown, the networking team decided to Implement SSM to improve efficiency for multicast within Layer 2. Which action must the team take to begin the process?

Options

• AImplement IGMPv3 simultaneously with IGPMv2 on the individual links that must support SSM
• BImplement PIM-DM to enable the routers on the LAN to Identify SSM-capable multicast hosts.
• CConfigure an IGMP querier and Implement Cisco Express Forwarding across the network.
• DImplement IGMPv3 and deprecate IGMPv2.

Explanation

Source-Specific Multicast (SSM) improves multicast efficiency by enabling receivers to specify both the multicast group and the source they want to receive traffic from. This eliminates the need for shared trees and Rendezvous Points (RPs), optimizing multicast traffic delivery. IGMPv3 is required for SSM as it supports source filtering, allowing hosts to request traffic from specific - IGMPv3 must be implemented on the network, as IGMPv2 does not support the source-specific functionality required for SSM. - Deprecating IGMPv2 ensures all devices use IGMPv3, avoiding compatibility issues and enabling SSM-capable multicast streams.

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