Pritvi and Harpreet gave excellent advice. There are many tricks and traps in the real SCJP exam, but the mock exams have more. The writers of the mock exams did us a favor by:
1. Training us to recognize the tricks and traps by exposing us to a very high density of them. As Prithvi said, learn them after reading the solutions.
2. Training us to be humble, so that we do not incorrectly assume that we can read the
Java code carelessly.
3. Training us to work efficiently and with stamina by tackling 72 questions instead of just 60.
Besides the two minute drills, the K&B book's Exam Watch sections are terrific sources for tips on the tricks and traps. Study all of them.
One last thing, mock exam scores are usually 20 points lower than the real SCJP exam scores. Assume no more than 20 points lower.