IREX was the only CASA examination i walked out of having absolutely no idea how i got any of my KDR's wrong. I wish i could have seen where i went wrong exactly. My classmates felt the exact same way.
Eg... A question I got wrong was - You are flying IFR from Strahan to Launceston, in regards to position reports, what requirement is there for a position report at BABEL?
a) compulsory all aircraft
b) compulsory under 300kt TAS
c) not required any aircraft
It did not specify an altitude so the assumption was that you were flying OCTA. I was not the only person in the class to get this one wrong.
And no I'm not having a sook, I passed by a fair amount