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Exam PCNSE topic 1 question 411 discussion

Actual exam question from Palo Alto Networks's PCNSE
Question #: 411
Topic #: 1
[All PCNSE Questions]

A network security engineer configured IP multicast in the virtual router to support a new application. Users in different network segments are reporting that they are unable to access the application.

What must be enabled to allow an interface to forward multicast traffic?

  • A. IGMP
  • B. SSM
  • C. BFD
  • D. PIM
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Suggested Answer: D 🗳️
by chrisy042 at Nov. 25, 2022, 7:19 p.m.

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chrisy042
Highly Voted 1 year, 11 months ago
Selected Answer: D
You must enable IP multicast for the virtual router, configure Protocol Independent Multicast (PIM) on the ingress and egress interfaces, and configure Internet Group Management Protocol (IGMP) on receiver-facing interfaces. https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-networking-admin/ip-multicast/configure-ip-multicast
upvoted 10 times
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djedeen
Highly Voted 1 year, 10 months ago
Selected Answer: D
The nuance to this question is thus: to 'forward mcast traffic' (actual question) requires PIM, but for a receiver to join a group (different than the actual question) requires IGMP.
upvoted 7 times
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Marshpillowz
Most Recent 9 months ago
Selected Answer: D
D is correct
upvoted 1 times
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