All doubts cleared at one go

Basically when i was attempting Avaya 61131T practice exams, i had no doubts at all. This was because practice on these questions on a regular basis clears the doubts on it own. So i was weak in some particular topics. I wanted to master it because of its weightage. I could through practice and i achieved 93% in the Administering Avaya Aura System Manager Specialized exam luckily.