The NSCA is very particular in how they do things, what they feel is “right”, and how they word their questions.
My two biggest suggestions would be to get the PT Essentials book and don’t try to outsmart the exam. Answer the questions they are asking, based on the information they have provided. There will be questions that seem antiquated by T-Nation standards, but remember that they are asking based on their standards.
I had a friend bomb the exam because he was trying to answer the questions like Pavel was asking them. When he retook it, $200 later, he answered based on the text and passed easily. BTW, he had recently graduated with a Physiology degree.
Certifications are always baseline knowledge, to really get ahead you have to be under the bar, doing your own research, and in front of clients, athletes, etc.
Good luck and i hope this helps.