As someone who has significant experience in AWS and is looking to go into Azure, these practice exams are great and I highly recommend. I took 3 days to read the Tutorials Dojo study guide, take the practice exams, and read the Microsoft Learn documentation before passing the exam on first attempt.
The practice exam questions are on par with the actual exam, and the answer explanations are very well written and thought out. I also highly recommend getting the Study Guide for AZ-900 from Tutorial Dojos website as that will help you cover all your bases for the actual exam. You can’t go wrong with these practice exams.