Hi Mopsy
The exams are only difficuly if you don't pay attention to your instructors during training and don't revise!
The exams are multiple choice but they do sometimes have 2 similar answers, of which only 1 is correct so you have to pay attention and READ the question properly.
The exams are all closed book exams, if they were open book it wouldn't be worth doing the 4 week training course as anyone could find the answers in less than 1 days training!