Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The real test was MUCH tougher

This is a good study guide, and the tests helped me find weak spots. The Texas Broker test questions were significantly tougher than the test in this book, and included several "trick" questions (two answers appear equally correct) that the book doesn't cover. Do NOT plan to use this as your only study resource - it's much too concise for that.