8.7. Answers to Review Questions

  1. A. A multicast source only has to send one stream of data.

  2. C. Multicast uses less bandwidth by only sending the data once.

  3. D. IGMP allows the router and the hosts to communicate.

  4. A. CGMP is the Cisco protocol that allows the router to tell the switch where hosts are located for multicast traffic.

  5. C. Multicast uses UDP to carry traffic.

  6. A. The range is local scoped and can only be used on a single network segment.

  7. D. The reserved multicast MAC address OUI is 01-00-5e.

  8. D. From one MAC address 32 IP addresses can be made.

  9. D. IGMP snooping can be used by most switches to determine where hosts are located that have requested multicast traffic.

  10. D. Cisco added the PIM sparse-dense mode of operation to PIM.

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