My stint with the 400-007 certification exam began with the cisco certified design expert online sample test. I had landed on the page while researching for the online resource for practice. I was amazed by the way everything was organized. I wanted to become a member then and there but first decided to opt for the sample test first. It made my decision strong and opted for it. It has been a couple of months i clear the exam with good score but i am still a member because attempting these CCDE simulated questions has become a habit for me.