Nokia Exam 4A0-108 Topic 7 Question 96 Discussion

Actual exam question for Nokia's 4A0-108 exam

Question #: 96
Topic #: 7

An Alcatel-Lucent 7750 SR is unable to locate a multicast source address in the multicast forwarding table. However, the source address is available in the unicast forwarding table.

Which statement best describes the default RPF check behavior of the 7750 SR?

AThe RPF check will fail as PIM relies exclusively on the multicast forwarding table by default

BThe RPF check will not fail, as by default PIM uses the multicast forwarding table first for RPF check, if not found in the multicast forwarding table then refers to unicast forwarding table

CThe RPF check will not fail as PIM uses only the unicast forwarding table by default

DThe RPF check will fail as the RPF check requires that the source address be present in both the unicast and multicast forwarding table

ENot enough information is provided to answer the question

Show Suggested Answer

Suggested Answer: B

by Audry at Sep 12, 2024, 11:01 PM

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Talia

9 hours ago

I disagree, I believe the answer is D because the RPF check requires the source address to be in both tables.

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Rolf

3 days ago

I think the answer is B because PIM first checks the multicast forwarding table for RPF.

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