Instruct: Classify Amazon reviews into positive or negative sentiment
Query: did the job perfectly

I just passed my i-net+ exam with a score of 95% thanks primarily to this book. The only other study material I used was practice tests on the web. This book covers all the material, and presents it in a way that works well with how compTIA will test you. The practice questions and practice test are very similiar in style, difficulty, and trickiness to the actual test. I'd even say the practice test was slightly harder. This is all you'll need to pass the i-net+, which is a great deal at twenty bucks.