Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent

I haven't finished reading this yet but feel confident that I will pass my CCNA on the first attempt. After reading the Sybex CCNA study guide I did not feel as confident, especially when I started finding numerous contradictions within the text and between the CD flashcards and the book. This text is very in depth but very readable as well. After looking at several CCNA study guides I believe this one is the best. As it should be considering it is from Cisco Press!