Multiple authors with differing styles is OK. The information is mostly well presented and targeted for the exam. But the sample test questions are a disaster. They are awful. About 10% of the questions in the book and on the practice CD are woefully wrong. Examples abound and range from questions that don't list any correct answer as an option, due to a type-o (p. 211 #2), to questions on the software exam that say "select two" and then give radio buttons, thus making multiple selections impossible. If you are looking for a second or a third book to read to prepare for the exam, you'll be able to extract enough good from this to merit the purchase. Plus, debugging the [messed] up questions is good practice! But if you are looking for one book with which you hope to prepare, avoid this one. Much better is that from Roberts, Heller and Ernest (Also has some errors, but there is an errata list on the website). The folks at Osborne also have an errata page, which doesn't mention this book...
As series editor, blame must fall squarely on Mike Meyers, who says "I love every aspect of this book you hold in your hands". Next time, better look at all the aspects of a book before sending it to press.
