Cisco CCDE certification exam is one of the most preferred certification that professionals look forward to. When i cleared this 352-001 exam, i was on top of the heaven. It really really helped shape my career in the manner i preferred to. I was initially wary of the mock tests online but gradually it gave me the trust and i became a regular in giving the mock tests. All those who prefer to change their career and make something out of it, then this exam and the Cisco Design Expert mock tests are really important.