I am an MCSE, A+, N+, I-NET+, MCSA.
I have over 10 years experience in IT, 6 of those years was spent teaching certification courses. If I have learned one thing during these years is "what I dont know". Moreover, there is a huge difference from book technology and technology and those who have read a book and then looked that their systems know what I mean. :-)
Employment wise, I currently work as a DNS, AD, DHCP System Engineer in an enterprise environment. We have over 30 DCs globally.
I certainly dont claim everything, but something I do know and will pass on that knowledge when ever I can.