This is the only way I can rate this book! Already from the first pages, it is clear that the author has a strong hands-on knowledge of the material which is going to be presented. The reading is really easy, essential and rich in details which can come only from someone with strong "field" experience. The sequence of the content gives to the reader all the necessary information so that the following topics can be expanded further. I really wish that all the engineering books were written with the same style: essential yet very well detailed. The author is transferring his experience to a novice like me in networking, easing my effort in understanding all the concept of the Ethernet with very excellent practical details. Thanks a lot to the author and strongly recommend the books to who is approaching the Ethernet network for the first time.