I recommend this book highly for anyone taking the new adaptive tests. You could use this review book as a standalone study book. I did, and passed the test the first time. Although the new test is hard, this book offers a succinct explanation of difficult-to-understand networking concepts even to the beginner. Even though the information contained in this book is great, I found that the questions were not really germane to the actual test questions. The diagrams, on the other hand, are certainly taken right from the test, memorize them! They could save you 100 bucks. Good luck with the test--hated it.