Send them via email today! (All questions are anonymous.). Taking the (ISC)2 CISSP exam can be an intimidating experience. There is a massive amount of information that could potentially be part of the 250 questions that must be answered in six hours.I took the exam myself in 2003 and found the preparation to be extremely stressful.he CISSP exam requires five years of experience in the field for good reason. I found that I was able to get through some subject areas in the practice exam because of my previous experience.