Yes I have, and no it's not. The 70-220 exam doesn't stress general security principles and practices enough, and it's completely Windows-centric. It's also more focused on how to design a secure network (as the exam title indicates) than it is on managing a day-to-day security routine within the context of a proper set of security policies, practices, and procedures. Those latter areas are of course where the industry certs focus their attention, and what gives them their appeal and value.
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