I might be missing something, but the link provided in ACA Mac Management Basics 10.11 doesn't exist anymore. Is there an updated test location? It also looks like the most current version is 10.15, but I only see courses up to 10.14.
Apple did not release updated training materials for macOS 10.15 so we did not film an update to the course. They haven't confirmed anything yet, but it looks like they will be discontinuing the certification track altogether. If that is the case, we will film custom content around macOS 11. For now, we are waiting to see what Apple announces. They usually drop new training materials in August. Last year was the first time they did not do that, so we are in uncharted waters on this one.
I have already taken the course for the Apple Support Essentials 10.15 with a company called Amsys (in London). I could not take the exam as we were in lockdown but that would have provided me with an ACSP 10.15.