The only stupid question is the question you don't ask.
Feedback is used to describe the questions which students who've sat the exams remember and pass on to subsequent students.
If you can remember questions from the exam then it's usually polite and helpful to drop a quick line to your flight school to let them know. That way you get to pass on some of what you've learned for the next batch of unlucky bugga's who have to sit the exam.
It's not called cheating, it's called being smart and most will tell you it's the only way JAR ATPL's get passed by students these days.
VFE.