Other than that it was an excellent book, providing a well done summary before each chapter which helped me to review a few hours before passing the workstation exam.
It also had some interesting explanations.
The test day fast facts at the beginning of each chapter offer good notes for later cramming.
There's a good walk through exam in appendix B and generally this book guides you carefully into acquiring the necessary hands on practice to go along with your exam study in order to ace the test, or prepare you for the real world.
The only area I was a little disappointed with was the fact that most chapters only give you enough, there's not much more for someone with mid level experience to gain in terms of practical skills.
Having said that as with all study guides of any nature you'll still have to acquire other guides along with this book ( which I classify as a beginners hands on manual)as one book just does'nt have it ALL, your best bet is to acquire 3 good guides and sift out the errors ,go with the common denominators found and this combined with the hands on practice this guide gives you should be enough thorough prep for you to nail the exam.
Overall a great book to help you gain essential Hands on experience- buy it if you're new to NT4.