We try to cover 110% of what's on the real exam. At this point I don't know of any topics on the real exam that we don't cover in the book. Of course, if anyone does discover that we've missed something please let us know.
You have to remember that the folks who create mock exams have to be very careful that they don't miss a topic. What that means is that if they're not sure, they'll tend to add a topic. I think that if you ask here, you can get a sense of which of the mock exams most accurately represent the topics on the real exam.
Spot false dilemmas now, ask me how!
(If you're not on the edge, you're taking up too much room.)
K & B is not a bible to cover complete Java. It is intended only for SCJP. I wish it is a single book which covers everything in Java so that we do not need to refer anything else. Java is an ocean..The more you read the more you learn..Overall K & B is covered pretty well for exam.