I cleared the CCNA Data Center this week. It felt a little silly since I have been teaching NP level classes for Data Center for a long time now.
Thank you so much to 1ExamAMonth.com ! I purchased their practice exam for the 640-911 DCICN exam and that was the only resource I needed. This is like CCNA with some Data Center basics thrown in. It was strange to see questions about hubs and Token Ring in a Data Center exam, perhaps some technical editor was asleep at the wheel when those questions made the cut.