Course contents

Module 03

Networking fundamentals

How a request actually travels: layers, addresses, DNS, proxies, HTTP and the transport protocols underneath, sized for an interview.

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By the end of this module you can

  • Trace a request from browser to server
  • Choose TCP or UDP with a reason
  • Place proxies and load balancers correctly

Networking

From packets to HTTP.

  1. The OSI modelLessonPremiumSoon
  2. IP addressesLessonPremiumSoon
  3. Domain Name System (DNS)LessonPremiumSoon
  4. Proxy vs reverse proxyLessonPremiumSoon
  5. HTTP and HTTPSLessonPremiumSoon
  6. TCP vs UDPLessonPremiumSoon
  7. Load balancingLessonPremiumSoon
  8. ChecksumsLessonPremiumSoon