If you use this book alone you will fail! I have passed 7 certification exams and never failed one until now, by one question! Book mentions next to nothing about SAINT, SAGE, SAMBA, and Phoenix ASICs. Chapters on 1900/2820 and 3000 appear to be written by a different author who is less qualified with both Cisco switches and technical writing! Book does not clearly cover the stated Cisco objectives! Technical Inaccuracies throughout the book! The questions at the end of the chapters are way too easy! The questions on the CD are the same as in the book! Why did I buy this book? Buy the Cisco press book, it has none of these shortcomings! Buy the way, anyone want to buy this book from me - cheap?