This question on the Computer Science SE involves an example exam question which is very unclear. I was wondering if it would be on-topic (including not "bad subjective") here to ask what a student should do when faced with such questions in an exam (or homework).
(A related question might be how to grade such questions. Knowing how an answer to a seemingly unclear question will be graded may give hints at how such should be answered.)
The poster of the question on CS.SE is in an awful position: the professor 'is known for [possessive pronoun extracted] "unclear" questions'.