DNS

Lesson in the DevSecOps Roadmap · Stage 6: Authorization

Last updated 14 September 2026

What is DNS?

DNS, or Domain Name System, is essentially the phonebook of the internet. It translates human-readable domain names, like "example.com," into IP addresses, like "192.0.2.1," which computers use to identify each other on the network. Without DNS, we'd have to remember and type in these numerical IP addresses every time we wanted to visit a website.

Study this in the interactive course See the whole DevSecOps roadmap

Free resources to learn DNS

DNS: common questions

Can I learn DNS in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain DNS in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this DNS tutorial for beginners?

It is lesson 20 of 93 in the free DevSecOps roadmap, in stage 6, Authorization. If you are new to DevSecOps, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.