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Networking
Computer Networking Essentials
Every modern system is a networked system. Follow a single request from a laptop to a data center and back, and learn the addressing, layering and protocols that make it work — the foundation for cloud, security and troubleshooting.
What you’ll learn
- Trace everything that happens between typing a URL and seeing a page
- Explain the TCP/IP model and encapsulation, layer by layer
- Read IP addresses, CIDR notation and subnet masks with confidence
- Describe how routers forward packets using routing tables
- Choose between TCP and UDP and explain how reliable delivery works
Curriculum
Module 1 · How data travels
5 lectures- 01What happens when you open a website3D modelFree16 min
- 02Layers and encapsulation3D modelFree17 min
- 03IP addresses and subnettingInteractiveFree18 min
- 04Routing: how packets find their wayInteractiveFree17 min
- 05TCP and UDP: delivering data reliablyInteractiveFree18 min
Module 2 · Core internet services
5 lectures- 06DNS in depthIncluded with the course
- 07HTTP and HTTPSIncluded with the course
- 08Ethernet, switching and VLANsIncluded with the course
- 09Wi-Fi and wireless networksIncluded with the course
- 10NAT, firewalls and portsIncluded with the course
Module 3 · Networks in practice
4 lectures- 11The troubleshooting toolkitIncluded with the course
- 12Load balancers and CDNsIncluded with the course
- 13Cloud networking: VPCs and subnetsIncluded with the course
- 14IPv6 essentialsIncluded with the course
Who this course is for
- Developers who want to debug network problems themselves
- Support, operations and infrastructure engineers
- Anyone preparing for cloud or security roles
Before you start
None. Everyday computer experience is enough.
Keep going
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Training a team on this?
We can combine Computer Networking Essentials with other courses into a learning path built around your team’s roles and goals.