400-007: Cisco Certified Design ExpertDemo

By Cisco · Question Mode

QuestionQ331

Network Design

Multicast routing is being planned for a company network. The requirements include efficient forwarding-plane design so that traffic is not sent toward devices that are not running multicast applications.

Which technology meets these design goals?

  • A Configure IGMP snooping on the routers.
  • B Configure PIM sparse mode using Auto-RP on the routers.
  • C Configure IGMP snooping on the switches.
  • D Configure PIM sparse mode using BSR on the routers.
Explanation

IGMP snooping on switches monitors IGMP joins and leaves to build Layer 2 multicast forwarding entries. Multicast traffic is therefore forwarded only to switch ports with interested receivers, avoiding unnecessary flooding to devices that do not use the multicast application.

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