In this lesson I step through the fairly complex architecture of DNS - the domain name system.

DNS is probably one of the most important distributed databases which exist today.

It is used for service discovery, configuration and the operation of most consumer web browsing and other internet activities.

While not strictly required in detail for the exam - understanding DNS will help you answer DNS related questions and help make sense of other AWS lessons throughout the course.

Lesson Links

IANA : https://www.iana.org

Root hints : https://www.internic.net/domain/named.root

Root Servers : https://www.iana.org/domains/root/servers

Root Zone Database : https://www.iana.org/domains/root/db

Root Zone File : https://www.internic.net/domain/root.zone

Delegation Record for .com : https://www.iana.org/domains/root/db/com.html