I did have some prior experience but most of my past experience was as a developer. Most of the questions, although I don't remember the specifics, followed this format. 1. Here is some type of data that was logged from the software. 2. We need to know if data is good or bad. 3. Use your favorite scripting language to read in the data and print out how many test cases passed or failed. One of the challenges was to look at an existing test tool and determine if it was actually functioning correctly. They told me how many bugs there were and I had to find them all. There was one challenge that I came nowhere close to finishing but the guy interviewing me was just satisfied seeing how I worked and he was satisfied with my explanation of how I would approach the problem.