certifications

This is the only book that I studied for 70-320 exam. I passed the test with an excellent score. It is very well written from exam point of view. However, I would suggest test takers to do additional reading in MSDN areas that appeared in the exam and were not sufficiently explored in the book. To name a few:
- Generating DataSet Relational Structure from XML Schema
- Soap Exception Handling
- Securing XML Web Services using ASP.NET
- Securing Serviced Components and Remote Objects

I am not saying that the book isn't good. The author has done an excellent job in covering the vast scope of this exam. As one of the reviewers pointed out that it is impossible to cover everything. If you practice all examples in this book and read above mentioned topics in MSDN, you are pretty much sure to pass the exam.

I passed the 70-320 with a score of 1024.
As one of the reviews state, the exam tests skills which are broader in scope and all of those are not (cannot be) covered in the book.
I had the advantage of real world experience and I supplemented my knowledge with microsoft help, msdn articles and used MS press for Advanced Web services.
But I would recommend this book definitely to start preparing for the exam as it explains the points clearly and gives a good launching pad for further studies and even if you dont, you still have a good chance of passing the exam.
I would like to praise the author on his excellent presentation of the COM+ services and Interop.

Like another book for exam 70-315 by Amit,this book is also an excellent resource for MCAD and MCSD.NET exams. I passed my MCAD.NET and MCSD.NET exams. This book provided helpful detail on the exam topics. This book cover good detail on remoting, window services and web services topics.