I normally stay away from online quizzes and from people trying to sell stuff, but when the purpose is computer security, I am as eager as anyone else to prove my skill (although I still will not buy anything). As you can see for yourself, I did quite well on this quiz.
Regardless, I still would not recommend the book, especially without reading it. From the content of the website (people still use FrontPage for web design in this day and age?), the book attempts to be funny - like that high school teacher that everyone laughed at, not with.