Saravanan - There is nothing like taking a few full exams to prepare you for the actual exam. Looking back, I think I did 5 full exams to get in the correct mindset. I took one a week up until the week of the exam. I then decided to take a few short quizzes, that included anywhere from 25 to 100 questions, the week of the actual exam. I actually took a couple quizzes a day, one in the am and another in the pm. After every quiz I reviewed the answers and looked back at the prepcast or the rita book if I needed more knowledge to clarify the question.
So for me it worked. Do make sure you do a couple of full exam simulations prior to the exam. I found that although I did finish the practice exams with many minutes to spare compared to exam day I finished and reviewed with a minute to spare. You need to get a few full exam under your belt so you can pace yourself for exam day.
Good Luck.