This is an animated DNS tutorial showing what a DNS server is and how it works. It explains the different levels of DNS, such as the resolver, root server, domain server, and authoritative name server. #DNS Monitor (Purchased this on 11-9-25) that I use and recommend: My keyboard My mouse ►Exclusive Deal. Get the VPN that I use (affiliate). Save 59% on a 2-year plan + 4 months free I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.