If you're looking for a book with questions that will prepare you for the TCP/IP for NT 4.0 MCSE exam, I suggest that you buy a different book. I used this book to prepare for the exam, and found that the format and actual content of the questions were much different from those presented in the book. Specifically, the book is very lacking in the areas of internetwork browsing and Unix integration, areas which I found the actual exam to focus on extensively. If you're taking the exam, make sure to find a book that covers these topics adequately.