Networking Essentials / Ports and protocols
Lesson 20 of 30
DNS in depth
DNS records map names to data: A for IPv4, AAAA for IPv6, CNAME for aliases, MX for mail and TXT for notes and verification.
Key points
- A: name to IPv4
- MX: mail server
- dig or nslookup look records up
dig lazo.example A
nslookup example.comQuiz · +10 XP
Which DNS record points to a mail server?
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