I took the 1.1 test and passed recently, and it would have definitely taken me longer before I felt confident enough to take the test without this book. Excellent 1.02 coverage, but as stated elsewhere, light on 1.1 specific stuff such as readers/writers. Also, don't be fooled by the section "What's not on the test" as this may be there also! Multi-dimensional arrays were covered on my test but were clearly marked as not being on the test in the book. Don't let the book's shortcomings prevent you from buying it though- if you're going to take the test, get the book.