"I Have Not Taken All the PrerequisitesWill This Book Still Help Me to Pass?"
That is a hard question to answer. It all depends on the your level of knowledge, familiarity, and comfort with Cisco security products. This book is designed to help you prepare to take the CSI exam, but it is not a sure guarantee that if you work though this book, you will pass the exam. That is still very much dependent on you and your experience.