Obviously, each exam question is completely different. However, that doesn’t mean you need to rack your brain every time you encounter a new question in an exam. Even if the context of a question is completely unfamiliar, you know that each question is asking you to talk about one of the main concepts in the topic.
If you , then you’ll know what your examiner is looking for (whatever the situation).
Remember, (this means including specific evidence from the exam question instead of just giving broad definitions) but you’ll be able to easily identify which definitions you’ll need to include, and which concepts you should write about.