I was interviewed for this job as a graduate fresh out of school, so most of the questions consisted mainly of the activities I'd done in school, subjects I'd taken, and getting me to describe some of my experiences during my university years.
I was also made to write a short essay on a topic of their choice -- I think this was done mainly to assess how well I could write rather than my knowledge of the industry, as a great deal of writing is needed for the job I was interviewed for.