Over the 3 hours whilst the exam was taking place I went next door and went through parts of the course that I had been having difficulty with. This was really useful as I had 2 other colleagues with me who were doing the same thing and we managed to bounce a few things around supporting each other.
I decided to test myself and went on to the Apple Teacher Learning Centre where you have the option of testing yourself on your i-pad skills or your i-mac skills. I decided to test myself on my i-mac skills. I had time to complete 4 of the 8 mini tests and passed all 4.
So I suppose what I am trying to say to anyone who is lucky enough to be given the opportunity to attend the DFI course, do it and definitely do the exam at the end. It doesn't matter if you pass or fail the first time, its all about the learning journey you take on the way.