Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very poor reference book, questionable test prep

I work as a Sun system administrator (8yrs+) currently have Sun System Admin and Network Admin certs. I have a Sun Blade 150 running Solaris 10 at home. So I am not new to Solaris systems.This book is clearly intended to teach a test only. It has virtually no useful information for day to day system administration. I have tried several times find anything useful in the books and have given up. For example SMF is covered only to the extent to explain the acronym no details of how to use it are given. Try to find anything on SMC and same coverage. Most details a working sysad will need are not covered in any detail.This is one book I wish I could get a refund for. About the only thing it is useful for is starting fires or wrapping fish.Don't waste your money!