Exam (2009) is a claustrophobic psychological thriller where eight candidates compete for a mysterious corporate job — locked in a single room with one strange test question, they quickly descend into paranoia, manipulation, and betrayal. A high-concept chamber piece, it blends corporate intrigue with survivalist tension.

Från IMDB:
Eight candidates for a highly desirable corporate job are locked together in an exam room and given a final test with just one seemingly simple question. However, it doesn't take long for confusion to ensue and tensions to unravel.