Instead of theoretical practice for 500-451 certificate exam, i opted for mock test practice. It is different and useful in many ways. I learnt different skills to clear the exam and this gave my confidence a real boost. I was an average professional before i decided to give this exam. However, after clearing the exam with the help of cisco enterprise network unified access essentials, my life changed completely. I continued to give ENUAE practice tests because it helps me keep a tab on the new developments in the industry as well.