What no one else has picked up on is, are those who are setting out the questions, qualified to do so ? Are they industry standards or their own interpretations??
If they are industry standards then anyone who has passed the NCCA should pass.
I could see some people who have been in the industry for quite a few years, and done loads of exams, could be upset to some degree by being more qualified than those setting out the exam questions.
This is not a knock just an observation.
Regards
Daryl