AER IS Systems Administrator interview questions

I was contacted by a recruiter out of the blue because my background was what they were looking for. I was not currently in the market at the time but after hearing about the company and what the position entailed I decided to pursue it. I was set up with a phone screen in which we determined that the position I was told I was interviewing for was not the position they actually had in mind for me. They were actually looking for someone to fill the shoes of an internal candidate for that position if they decided to give it to him. His current position would then be available and I was a contender for it. They set up a face to face interview.