250 IT security questions in 6 hours. Thankfully the answers are all multiple choice and you can write in the book, unlike computer based exams where you are given a scrap sheet of paper to take notes.
Fortunately there is a good amount of study material out there, that and I am familiar with the topics and the exam as I passed it on 2004.
You don't want to fail this baby at $550 a pop! There is an incentive for passing the exam as I get a nice pay raise for a certain amount of years, and then have to recertify.