I agree with Oxford Blue's reply in general, but it's also worth adding that understanding the material doesn't work for all subjects. Air Law and Operation Procedures, for example, are two exams which can only be passed by learning the answers to the questions.
What this means is that most candidates will either struggle with the more technical exams, or they'll struggle with the memory exams, depending on whether they are better at understanding or memorising. I fell firmly into the latter category - I've always been good at understanding things, and had no problem with the technical exams, but I really struggled with Air Law and Ops Procs. Plenty of people on my course had similar problems, while other people had no problem with these exams but couldn't do the technical ones.
FFF
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