1. Daily write down the process chart(49) and understand the logical sequence.
2. We should know major output(there are many but focus on primary out) of every process /for all 49 processes. This would give you a good base and confidence in the exam.
3. important tools and purpose. Revise until you remember.
4. As many people suggested, use elimination technique for choosing the best answer.
5. Remember, PM main responsibility is to protect the project constraints and he should do to the extent possible to secure these. If no choice and got into problem then maintain transparency on any decisions. This is key and this is true in real life as well to be successful, which tells PMBOK framework in broader.
Good luck.