While the initial knowledge test is 60 questions, the recurrent test is only 40 questions.
Many of the same topics are covered — but you won’t see any Weather & Micrometeorology questions (no METAR reports, no density altitude, etc.) or any UAS Loading & Performance questions (no Load Factor Charts, no questions about center of gravity, etc.)
Within Drone Pilot Ground School, if you log in and scroll down to Module 10, you’ll see that we have a whole section dedicated to the recurrent test. Our students benefit from lifetime access to our training materials and can log in at any time to resume studying for the recurrent exam, or simply to brush up on knowledge.