DNS and DNS Security — Study Resources & PYQs

Curated resources, past papers and PYQs for DNS and DNS Security.

Study resources

What is DNS? (Article) — Cloudflare's canonical, plain-English explanation of how DNS resolution works.
DNS Attacks Explained (Video) — Covers DNS spoofing, cache poisoning and other common DNS-based attacks.
DNS Explained in 100 Seconds (Video) — Fireship's punchy, well-loved explainer on how DNS resolves domain names (confirmed, previously used in other files this session).