content: I only gave this book 4 stars because of the numerous typos. Bottom line is, it's an easy read--a much easier read than the Sybex book or the Cisco Press. If your goal is to pass the BSCN, and if you want a book that's straight forward, with the authors not trying to impress you with unnecessary technical mumbo jumbo, then this is your book. With this book, and the study questions from cheet-sheets.com, you're sure to pass. I passed with an 816 only reading this book once, reading two chapters a week. Just remember, you only need 690 to pass. Good luck.