DNS — Roadmap Step & Resources
How domain names resolve to IP addresses and DNS caching/propagation
- Level: beginner
- Estimated time: 1 days
- Roadmap: System Design
Before this step
Interview questions
- What happens during DNS resolution, step by step?
Study resources
- DNS (Article) — Domain Name System: hierarchical structure, resolution process, record types (A, MX, CNAME), and DNS servers.
- What is DNS? (Article) — Cloudflare's canonical, plain-English explanation of how DNS resolution works.
- DNS Explained in 100 Seconds (Video) — Fireship's punchy, well-loved explainer on how DNS resolves domain names.
Part of
- Networking & Web Fundamentals — section
- System Design roadmap — the full learning path