Use the practice tests to challenge your knowledge and to make sure you can pass the real knowledge examination.
If this was the actual knowledge test by New Jersey MVC, the test would have 50 questions instead of 25. To pass the real examination, you must 40 of the 50 questions correctly. This is a passing score of 80%.
If the the sort sample tests aren't enough for you, visit Driver's prep for more online practice. Driver's Prep has the largest online database with New Jersey questions and answers to help you pass the examination.