Instruct: Classify Amazon reviews into positive or negative sentiment
Query: spend your money elsewhere

I wish I had chosen to spend my time reading something else. The only redeeming elements of this book are the scenarios and the end of chapter quizes.The presentation of the material is frustrating to say the least. The author oscillates between useless fluff (8 pages on classes of IP addresses) and misses important details needed to understand examples (e.g. mentioning commands executed via access lists that aren't shown).Not at all up to the quality I'd come to expect from the Cisco ACRC and ICRC books.