02 Domain

What is a domain name

Domain names are used to identify computers on the internet. They are used to make it easier for people to remember the addresses of websites.

Structure of domain names

• TLD: top-level domain, e.g. .com, .org, .net
• SLD: second-level domain, e.g. google, facebook, twitter
• Subdomain: subdomain.sld.tld, e.g. www.google.com, mail.google.com