Went around a month ago now, different branches get different tests but I know for aircrew (P and O) they don't just want you to know general stuff bout the RN but there were a couple of Q's related to more technical stuff to do with aviation, ie. 'which RN helo has got 3 engines?' or 'what is angle of attack?' etc. Not hugely important because there were very few of these types of Q's and much more to do with aircraft and ships.
Best of luck anyway
