Tough topics are not tough at all

So, my mind was clouded with doubts while practicing for the 500-452 ENCWE exam. I had doubts in cisco wan optimization solution topic. I could not miss it by any chance. So i started practicing with the 500-452 simulated questions that helped me understand what could be the possibilities and how could i delve deeper. It helped a lot in the final attempt that helped me get good score.