Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not a good purchase!

I do not recommend this book. I could have cut and pasted from Cisco's web site and come up with a much better book. Really not a comprehensive coverage of CIT. I have not read the Cisco Press book and this is the first time that I have deviated from the Cisco Press books and absolutely regret it. I threw the book away and pulled out Jeff Doyle's Routing TCP/IP, which is light-years ahead. Hope this helps.