Which three statements are true about Protocol Independent Multicast (PIM) implementation on Cisco routers? (Choose three.)

Which three statements are true about Protocol Independent Multicast (PIM) implementation on Cisco routers? (Choose three.)

• Bidir-PIM is suited for multicast with larger numbers of sources.
• In PIM-SM deployment, all routers create only (*,G) entries for the multicast groups.
• In PIM-DM, a multicast sender first registers with the RP, and the data stream begins to flow from sender to RP to receiver.
• Available network bandwidth is overutilized outside of the multicast routing zone because multiple streams of data are required between distant routers in place of a single transmission.
• All routers in the PIM network learn about the active group-to-RP mapping from the RP mapping agent by automatically joining the Cisco-RP-discovery (224.0.1.40) multicast group.
• In a PIM-SM network, the routers have the SPT threshold set to 0 by default which guarantees that the last-hop router switches to SPT mode as soon as the host starts receiving the multicast.

Exam with this question: CCNP SWITCH (Version 6.0) Chapter 7 Exam