RealWorldCerts

Course Details

Networking Essentials — DNS, HTTPS, CDN

techbeginner • ~5h • SKU: networking-essentials

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What You’ll Learn

  • DNS records and how resolution actually works
  • TLS/HTTPS basics, certificates, and common errors
  • CDN caching behavior and cache-control strategy
  • HTTP status codes, redirects, and troubleshooting

Outline

  1. DNS fundamentals: A/AAAA/CNAME/TXT
  2. HTTPS: handshake, cert chains, HSTS
  3. CDN: origins, caching, invalidation
  4. Observability: logs, headers, curl basics
  5. Hands-on labs + debugging playbook

How Access Works

After payment, you receive course access links (Google Drive) and any included practice materials by email.