content: This book is not for the beginner to start learning the product. However, if you are just quite familiar with them, this one is the best summarized book. You will find out that there are many things you don't really know, then you go back to try, you will know. Tell you in more detail, I chose TCP/IP and Proxy as my electives. TCP/IP is okay, but Proxy is not that easy, after you read the book, you should try the server again. Anyway, I have to say loudly that I can pass MCSE in 2 weeks because of this ELEPHANT book and its companion Core In Nutshell. Don't forget to buy both of them, Core in Nutshell and Elective in Nutshell. GOOD BOOK DOES NOT NEEDED TO BE THICK. If it's possible, could the writer write MCSD in Nutshell, please?