DNS

06-CN Application Layer

DNS Servers, DNS lookup, DNS use UDP and not TCP

📅 May 6, 2021

# Topic covered
* What is DNS?
* DNS Servers
  * DNS resolver, Root, TLD and  Authoritative
* Who operates DNS root servers?
* How do resolvers find DNS root servers?
* Types of DNS queries
  * Iterative
  * Recursive
* How does the Domain Name System (DNS) lookup work?
* Why does DNS use UDP and not TCP?

📁 Computer-Networks 🏷️ DNS