I once interviewed at place and they had an interesting test. Up to this point, I had only worked on r12 for dos. The were running r14 for windows. I told them that up front and they said they didn't have r12 to load back on. I said "it doesn't matter".
they sat me at a computer with AutoCad running and gave me a couple 8.5x11 sheets with numbered instructions. It was pretty cookie cutter, #1, open drawing at this network location. #2, edit this titleblock attribute, #3 edit this note (mtext or dtext). Then reference this file (overlay) from this network location. Edit this other reference file. Basically many different/broad items that were to be done. There was some dimensioning to locate specific equipment and inserting blocks from a specific location.
They said, get as far as you can and you have as much time as you need. After 2.5 hours, I was done with just a couple questions and moments of confusion as I didn't understand what they were asking. They had people who sat there for 6 hours and did not complete as much as I had.
They offered me the job on the spot and it was for good money but they wanted a minimum 55-60 hr work week and I wasn't interested in that @ the time.
Pieter