My preference for university exams was a simple, single page cheatsheet that you had to make yourself. You could write the finicky stuff that is hard to remember on it, but you couldn't fast-learn the material like you could from a book. Though I do remember writing out little programs for the weirder stuff like required coverage over concrete reinforcement bars. Which felt a bit like cheating at the time.
If you remember one of the questions it would be interesting to know what the current crop of LLM chat bots return in answer. If you know the correct answer to the question it would be especially interesting to know whether the prose the things return has any semblance of truth to it.