This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
The format/layout of the questions in the 'real' exam is way better than any mock exams I have looked at with one exception.
If you attempt to review any drag and drop questions then your original answer is lost. Does anyone know why the exam has been implemented with that as a 'feature'? It seems to discourage the exam candidate from double checking their answers.
Other than that I found the format of the real questions easy to use. ie you can view the code in one big block - no need for scrolling.