In a typical high school classroom setting wherein the final exam will cover everything that has been discussed since the start of the school year, the best way to revisit past lessons is by reviewing the test questions that you have taken previously. This is the best way to check your knowledge and assess your confidence in passing the long and grueling final exam. By doing this, you already have a slight idea on what questions to expect, which will give you better chances of getting a high score and eventually pass the exam.
This is also similar in taking certification programs such as Prince2 Foundation. Since there have been a lot of exams conducted in the past, you can use those past questions as a sort of a review. It does not matter if you are a first time taker or an exam veteran. Taking advantage of such resource will definitely affect the results of your exam in a positive way.
Because of the need to pass the exam that pave the way for web site administrators to make past exam questions available for others to download in a form of an exam simulator, hoping that it will help them ease the pain of revisiting past lessons. But then again, there is no assurance that past exam questions will reappear on the next Prince2 Foundation exam. However, this will still help you develop strategies in answering the exam. Prince2 Foundation exam should be completed within an hour and therefore it would be best to have a sample exam first to know how it feels like to answer 75 questions within specific time constraints. Surely, you will never regret it.