Oversimplified DNS

... or, even a rocket scientist can understand DNS

[This page is in limbo] Name for DNS server that has no authoritative zone, but caches data (IE our 10.10.10.3 if it wasn't authoritative for us, or an ISPs DNS?) A RECORD ADDITIONAL SERVER AUTHORITATIVE NAME SERVERS - The ones listed in WHOIS (but not NS's from primary?), if also listed as NS record(?). AUTHORITY - RFC882 says a DNS server is an AUTHORITY for zones that it knows about, and doesn't point to other DNS servers for! Presence of SOA indicates authority [882p20] BACKUP SERVER = Secondary Server LAME DELEGATION (a name server in Whois that doesn't have your SOA in it) MX RECORD PRIMARY SERVER PTR RECORD RESOLVE RESOLVER RESOURCE RECORD (RR) - REVERSE LOOKUP ROOT NAME SERVER - Knows how to contact all the TLDs. RR - See Resource Record Secondary Server (also called backup server). Time-To-Live - TLD (ToP LEVEL DOMAIN) TOP LEVEL DOMAIN TTL - See Time-To-Live. ZONE - Handles that point and down. IE .com knows .com and all subdomains. fcc.com knows fcc.com and all subdomains. ZONE FILE - File with info on zone; SOA -> SOA. ZONE TRANSFER -