These questions if asked more precisely such as, Is stateful session bean' creation controlled by the client, would be more correct I suppose as the above question depends on which type of session bean you are thinking about.
Does anyone have any comments on these types of vague questions, and how to pass the exam if questions like that come up?
To add to what Severin said, I can assure you there are no vague questions on the exam. The wording of every question is very clear. Actually, before releasing an exam, Sun beta tests it with hundreds of people who are supposed to give feedback on every aspect of the exam. So you can be quite sure that if a question is vague, it would be noticed before the exam goes live and appropriate actions would be taken to remedy to the problem