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H31-161 · Question #63

When the multicast source starts to send multicast data and no receiver joins in the RP in PIM- SM, which of the following statements are true?

The correct answer is A. The RP receives a registration message from the source DR, creates a multicast routing entry (S, B. After the source DR unicasts registration information to the RP, the multicast routing entries (S, G). See the full explanation below for the reasoning.

Question

When the multicast source starts to send multicast data and no receiver joins in the RP in PIM- SM, which of the following statements are true?

Options

  • AThe RP receives a registration message from the source DR, creates a multicast routing entry (S,
  • BAfter the source DR unicasts registration information to the RP, the multicast routing entries (S, G)
  • CAfter receiving a registration message, the RP creates the multicast routing entries (*, G) of all
  • DAfter all sources unicast registration information to the RP, no multicast route entries related to

How the community answered

(29 responses)
  • A
    83% (24)
  • C
    10% (3)
  • D
    7% (2)

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