Are you talking about an interview sim? We haven't done those for quite a while. If you are offered a position, you will do one during indoc to assess you abilities and get ready for MEICC. That is the instrument course we put everyone through the second week if they pass the indoc test.

If you want to prepare, it is basic non-GPS instrument proficiency. We want to see if you can get the airplane from point A to point B in instrument conditions without following a purple line on a screen.