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Domains and DNS

This lesson explains how domains work and explores the role of DNS — an essential concept for understanding how software is accessed online.

Lesson 6: Domains and DNS explained
Lesson 6: Domains and DNS explained

What you learn in this lesson #

Core concepts of domains and DNS #

  • What domains are
  • How URLs work
  • How DNS helps locate any web server

How do applications find the corresponding webserver
How do applications find the corresponding webserver

Domains and URLs #

  • The difference between a domain, a subdomain, and a top-level domain
  • What a URL is and what it represents
  • Where the path appears in a URL

URL dissected and explained
URL dissected and explained

The Magic of DNS: Connecting to any webserver #

  • Understanding IP addresses
  • How DNS maps a domain name to an IP address
  • How quickly a domain name is translated into an IP address

DNS translates a domain into an IP address
DNS translates a domain into an IP address

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