I would thoroughly recommend this book as a study aid particular for the following reasons:
a. The consistent and logical layout to each chapter. b. The well thought out exercises (both 'Step by Step and 'Apply Your Knowledge'). c. The well placed and useful 'Notes', 'Cautions' and and 'Exam Alerts'. d. The general depth of coverage in all chapters (In my view much superior to SUN's web based course).
I would also recommend that anyone wishing to use this text should download and configure SUN's Virtual Box software. This was invaluable in working through the Solaris 10 exercises involving networks, multiple hosts and additional disk hardware.
On the down side
There are some mistakes within the text but they are largely forgiveable given the depth of detail, except for those in practice exam questions and their answers.
On a cautionary note
Before purchasing this text be aware that Oracle have indicated that in future SUN certification paths will be aligned with their own and I can't help thinking this will effect in some way the coverage of this certification exam.The cost for the exam has already gone up !!!!!.