Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Where's my refund ? Big Let Down

This book doesn't live up to the quality usually displayed by other books from McGraw-Hill.This was a great idea gone bad. I suspect the temptation to be first to market was too great.The book contains ERRORS, wrong answers, confusing diagrams, incorrect diagrams, etc...The updates to the book/answer keys contains ERRORS.Do yourself a favor and buy any other Cisco/CCIE study book on amazon.King_Geek MCSE+I, CNX