TryHackMe module 6 — TLD/SLD/subdomain structure, A/AAAA/CNAME/MX/TXT records, and the DNS resolution journey with TTL caching.
Resource Cheatsheet
#dns
4 entries across collections.
Full class notes for TryHackMe module 6: domain structure (TLD/SLD/subdomain), A/AAAA/CNAME/MX/TXT records, and the DNS resolution journey.
Lesson Note
Professor Messer A+ 220-1201 objective 2.4 — DNS hierarchy and root servers, dig/nslookup, resource records, A/AAAA, CNAME, MX, TXT, DKIM, SPF and DMARC.
Resource Cheatsheet
DNS, TCP, TLS and the first byte, in the order they actually occur
Explainer