Every year, make sure that your concepts are clear. Refer to standard books to know about everything in detail (you can refer to other books for University exams). Make good notes that you can refer to, later. I believe, if you are really interested, you can just go through MCQ’s involving the subjects that you are studying that year. (Only if time permits).
Ultimately, the exam is all about revision. The more you revise, the more you remember but half the role is played by sincerity.
During internship, join a good coaching centre and appear in mock tests, as much as you can. Solve as much as mcqs as you can. You’ll definitely do well!