# 300-320 — Question 428

**Type:** multiple_response
**Topics:** topic_1

## Question

What are two methods of ensuring that the multicast RPF check passes without changing the unicast routing table? (Choose two.)

## Correct Answer

_See scenario._

## Explanation

Shouldn't the correct answer be CE? How is A correct? Wouldn't disabling the router interface that connects back to the source change the unicast route in the routing table of the router?

**Reference:** examtopics_top_comment

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Source: https://hiexam.net/q/cisco/300-320/428  
Practice (tracked): https://hiexam.net/study/300-320/practice