ASM vs. SSM JN0-664 Practice Questions (Page 5)

Questions 21–25

1. 21expert · hard

   A network architect is designing a multicast solution for a large enterprise. The enterprise has two applications: one is a legacy video broadcast where any source can send to a group, and the other is a new stock ticker where the source is fixed. The architect wants to minimize router state and avoid RP configuration where possible. What is the best design?

   • AUse SSM for both applications
   • BUse ASM for the video broadcast and SSM for the stock ticker
   • CUse PIM dense mode for both applications
   • DUse ASM for both applications
   Reveal Solution Discussion Select an answer first
2. 22application · medium

   A service provider is transitioning a legacy ASM multicast service to SSM. The existing receivers use IGMPv2 and cannot be upgraded immediately. The provider wants to run both models concurrently during the transition. What is the most appropriate approach?

   • AUse different group ranges for ASM and SSM and configure PIM-SM for ASM and PIM-SSM for SSM
   • BMigrate all groups to 232.0.0.0/8 and keep IGMPv2
   • CConfigure a single RP for both ASM and SSM groups
   • DDisable ASM and force all receivers to upgrade to IGMPv3 immediately
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   In the ASM model, what is the purpose of source registration?

   • ATo allow receivers to request traffic from a specific source
   • BTo notify the RP of a new source so it can be added to the shared tree
   • CTo assign a unique multicast group address to the source
   • DTo establish a direct path between the source and each receiver
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   Which of the following is a key consideration when transitioning from ASM to SSM in an existing multicast network?

   • AThe network must be completely migrated to IPv6
   • BAll multicast applications must be rewritten to use SSM addresses
   • CAll receivers must support IGMPv3 to join SSM groups
   • DThe Rendezvous Point must be reconfigured to support SSM
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   A network engineer is troubleshooting a multicast deployment. The network uses PIM-SM for ASM. Receivers are receiving traffic, but the path from the source to the receivers goes through the Rendezvous Point (RP). The engineer wants to optimize the path so traffic flows directly from the source to the receivers. What should be configured?

   • ADisable the RP and rely on dense mode
   • BEnable the shortest-path tree (SPT) switchover on the last-hop router
   • CConfigure the RP to send Source-Specific Prunes toward the source
   • DEnable PIM-SSM on all routers and change the group range to 232.0.0.0/8
   Reveal Solution Discussion Select an answer first