Or anyone else who wants to learn about Ethernet and TCP/IP. This is a very good book to learn about networking in general. It is written in a manner that can be easily read and understood. It covers the basics very well, I found many items that I didn't know. It also has chapters with good advice about network reliability, speed, and security.
After the basics are covered (about two thirds of the book), the book has an overview of the currently used industrial protocols. It includes an overview of Web Services including XML and SOAP. It then briefly covers wireless networking and Power Over Ethernet (POE).
I think that just about anyone in the computer or controls industry would benefit from this book, from beginners to seasoned engineers. Highly recommended.