FCP – FortiGate Administrator 7.4 — Question 38

An administrator has configured a strict RPF check on FortiGate.

How does strict RPF check work?

Answer options

• A. Strict RPF checks the best route back to the source using the incoming interface.
• B. Strict RPF allows packets back to sources with all active routes.
• C. Strict RPF checks only for the existence of at least one active route back to the source using the incoming interface.
• D. Strict RPF check is run on the first sent and reply packet of any new session.

Correct answer: A

Explanation

The correct answer is A because strict RPF (Reverse Path Forwarding) checks for the best route back to the source using the interface the packet arrived on, ensuring that packets are received from legitimate sources. Options B and C provide inaccurate descriptions of strict RPF's functionality, and option D is incorrect as strict RPF is not limited to the first packet of a session.