Taught 20411C Day 1 dpapkinApril 7, 2014 David Papkin Category No Comments Today taught DNS, AD concepts. RODC, AD Recycle Bin, AD Maintenance david mark papkin, David Papkin, davidpapkin ← Doing ML for 410, 414 and ccna Teaching 20411C Day 1. → Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.