NSE 4 – FortiGate 6.4 — Question 79

An administrator has configured a strict RPF check on FortiGate.
Which statement is true about the strict RPF check?

Answer options

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

Correct answer: B

Explanation

The correct answer is B because strict RPF checks the best route back to the source to ensure proper routing and prevent potential loops. Options A and C are incorrect as they do not accurately describe the criteria for strict RPF checks, and option D is misleading since strict RPF checks are not limited to just the first packets of a session.