Studying for this exam is tough. And books like this don't help. Failed this exam miserably first time round (before the recent syllabus change) and this book, which barely scratches the surface of the syllabus anyway, has to be partly to blame for instilling a false sense of confidence!
Yes, I know, you don't rely on this for the detail, and I didn't. But there is just nowhere near enough depth in these type of books for this level of exam. Save yourself a few quid and go and buy the *new* Cisco Press books, postpone your exam for a month and immerse yourself in the subject - it's the only way you're going to pass! (and that's how I did it!)
That said, probably not a bad example of the genre, just not the right sort of book for the purpose it purports to serve.