I just took all 3 network exams. I only got like 70% on the ports

. On the other 2, I got 86% on OSI, and 96% on the exam.
I know I need to review ports, but overall (from those that wrote the exam), am I ready, or should I study a little more?
I've been putting this thing off long enough, it's summer, so it's even harder to stay inside, and study

I am using this site, sybex, and beachfront quizzer.