How the Domain Name System Works

Understand the detailed working of the domain name system.

We'll cover the following

Through this lesson, we’ll answer the following questions:

  • How is the DNS hierarchy formed using various types of DNS name servers?
  • How is caching performed at different levels of the Internet to reduce the querying burden over the DNS infrastructure?
  • How does the distributed nature of the DNS infrastructure help its robustness?

Let’s get started.