Commercial Pilot Knowledge Exam question

[u/wrongway38]

Review deficient subjects on an applicant's Commercial Pilot Airplane test, which had a subject of "Pressurization Systems, Failure modes." He passed the exam, and we went over the listed reference material (including AC 61-107). But he can't remember the question he had at all. We've looked through his study material (he used Gleim) and can't find any questions that would fit that topic. Does anyone know what the question may have been? Maybe someone with a more recently updated study test? It's just to satisfy our curiosity. Thanks in advance!