I did all the quizzes and got 100 % on all 13 then took the practice exam and I scored a 56%. There was a lot of questions not on the quizzes. Any suggestions on what else I can try to study?+
I believe the quiz questions change regularly. Just keep taking the quizzes over and over, is one way to improve.
Try Internachi Flashcards - excellent practice tool.
Do you have a link, Andrzej?