DNS and HTTPS — Study Resources & PYQs

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

Study resources

Getting Started with Let's Encrypt (Article) — Let's Encrypt's official guide to setting up free, automated HTTPS certificates.
HTTPS In 100 Seconds (Video) — Fireship's punchy explainer on how HTTPS and TLS certificates actually secure a connection.
Certbot Documentation (Article) — The official EFF instruction generator for automating TLS/SSL certificate issuance and renewal via Certbot.
What is HTTPS? (Article) — Cloudflare's clear guide explaining SSL/TLS handshakes, public-key encryption, and port 443.