Yesterday I cleared the exam with 84%. Thanks to Head First book and all the ranchers.
I think for exam preparation, Head First is a pretty good book. But there are some question which are not covered in Head First book. I would say it is better to get proper understanding of Desing Patterns, I had about 7 questions on design patterns and I wasn't sure on about 5 of them. So I decided to buy "Head First Design Patterns" and learn design patterns properly. I had about 2-3 questions which were not covered in the book.
If you read the specs and something about design patterns, along with the HFS book then you can get 95%-100%.
I read the book twice and then decided to write the exam on June 11th and prepared well for the exam but the PROMETRIC people cancelled it and I wrote it yesterday and I revised the book once.
I did not write any mock exams, I always kept them for 1 day before exam and never found time. All the questions that I saw were the questions after each chapter in HFS book.
BEST OF LUCK TO ALL THE PEOPLE WHO ARE PLANNING TO WRITE THE EXAM.
I have only one advice, read the book twice and design patterns and you will get 90%.