CodeLearn Academy
Computer ScienceIntermediate Certificate

Computer Networks

Learn how the internet and networks actually work

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16 hours 32 lessons Intermediate Updated July 2026

What you'll learn

Understand the OSI and TCP/IP network models
Explain IP addressing, subnetting, and routing
Describe how DNS resolves domain names
Understand TCP vs UDP and when to use each
Explain how HTTP and HTTPS work
Recognise common network security threats and defences

About this course

A practical introduction to computer networks and the internet. Starting from the OSI model and TCP/IP stack, this course covers how data travels across networks — including IP addressing, routing, DNS, HTTP, and network security basics — giving you the foundation for advanced networking or backend development.

Course curriculum

32 lessons · 16 hours total

Your instructor

PR

Pallava Ray

Computer Science Educator

Pallava Ray is a CS educator who makes networking concepts concrete and understandable. This course walks through the layers of the internet from physical signals to application protocols with clarity and precision.

₹500