This is a very good book to prepare you for the TCP/IP test. I spend one full month on this book and "TCP/IP for NT SERVER 4 Study Guide third editon" from SYBEX. The result is a testing score of 965. I am very happy about these two books.You should not solely rely on this book because it does not give you a lot of explanations. The purpose of this book is to help you to learn what kind of questions might appear on the test. You need a study guide to help you also.By the way, I believe it is very important to have at least two computers to practice networking. It is not an good idea to just read books cover to cover.
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