Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent book, both for the novice and experienced

I've found that this book explains more things better than any other that I have read on the subject. Anyone who is looking to understand the how/why of lower network levels should read this as it not only explains Fast Ethernet, but also provides an excellent history of networking in general. After reading through this book you should have a good understanding not only of fast ethernet, but also networking technologies in general.