Instruct: Classify a given review into positive or negative sentiment.
Query: Excellent introduction to Gigabit Ethernet

If you are looking for an in-depth, complete introduction to Gigabit Ethernet (both copper and fiber) you have found the right book. In about 500 pages the authors give a professional introduction not only to the Gigabit version, but other Ethernets as well, talking about network design, MAC layer, cabling, and almost everything you can expect from a book so named.