From what I could gather, my interview group was randomly given the same test .. They have several versions, a,b,c so you can't cheat but they said we could sit down at any seat that had a test. The prep from Latestpilotjobs had good information and definitely helps with what type of info to study. I also read ace the technical interview.
The interview was very comfortable and everything organized very well.
The technical test dealt with lot of altimetry questions and aerodynamics...