Does the Test Yourself questions in the book reflect the level of exam questions??
NO! Big NO! I have that same book and I was getting like 100% in all the questions at the end of each chapter ... I felt like a champion ... then I started doing mock exams and was very dissapointed to see my score around 60%-70% ... even with the ones in the book's cd! ... so I've given myself another couple of months to study by a second book and online material ...
I've learned a lot of stuff with Dan's exams, specially the ones specific to each objective of the certification exam ...
you should check them out and you'll see the level is much more higher than the silly Test Yourself questions in that book ... (I don't have the link here but can send it later if you can't find it)
... And I thought I knew Java ... oh dear!
cheers
L.