the states that the designer want to use the three PIM-SM kinds and which one is true about bidirectional pim

Question

Options

• Athree of them cannot be used at the same time
• Bsource has to be expelicitly mentioned
• CThe RP donot need IP address
• Dthe RP ip address can be shared by other interface

• A
  3% (1)
• B
  5% (2)
• C
  11% (4)
• D
  81% (30)

Explanation

In Bidirectional PIM (BIDIR-PIM), the RP address can be a 'phantom RP' - an IP address not exclusively tied to a dedicated physical interface - allowing the RP role to be shared across multiple routers using anycast RP techniques. All three PIM variants (PIM-SM, PIM-SSM, BIDIR-PIM) can coexist on the same network (A is false). Explicit source specification is a feature of SSM, not BIDIR-PIM (B is false). BIDIR-PIM still requires an RP IP address (C is false - the RP must have an address, even if phantom). BIDIR-PIM builds bidirectional shared trees rooted at the RP, improving efficiency for many-to-many multicast scenarios.

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