Instruct: Classify the given review as either positive or negative.
Query: A tough topic explained well and accurately

DNS is a tough topic to explain; especially to those of us that have always worked in the Microsoft/WINS world. This book does a great job of that. The book is accurate and well organized and it holds a reserved spot on my shelf of regular reference guides. I recommend a little bit of basic knowledge of DNS when starting this book and then re-read the first chapter or two, but it does a great job of explaining DNS so that even Microsoft-centric people like me can understand.