# Networks
All Networks notes →1 — DNS Fundamentals
Name resolution end to end: recursive resolvers, authoritative servers, and the root server hierarchy behind every DNS lookup.
networks dns book
2 — DNS Records
The DNS record types — A, AAAA, CNAME, TXT, NS, MX, SRV, PTR — and what each one actually resolves.
networks dns book
3 — DNS Performance
TTL and caching behavior, plus split-horizon DNS, GeoDNS, and anycast DNS as the levers for DNS-driven performance and routing.
networks dns book