Networking Essentials

Categories: Networking
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About Course

Welcome to Networking Essentials

Networks are the invisible fabric that connects everything we do — from sending a message to streaming a class. This course takes you from zero to a confident understanding of how modern networks are built and operated, using the same layered approach used by industry programs such as the Cisco Networking Academy.

You will work through five modules. Each module contains a detailed reading lesson followed by a short knowledge-check quiz. When you finish all five, you sit a comprehensive final certification exam. Your progress and results are recorded automatically in your student dashboard.

How this course works

  • Learn — read the lesson and study the diagrams and examples.
  • Check — take the short module quiz; retry as many times as you need.
  • Certify — pass the final exam (70% required) to complete the course.
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What Will You Learn?

  • Explain how data travels across networks and the internet
  • Describe the OSI and TCP/IP models layer by layer
  • Calculate IPv4 addresses, subnet masks, and network ranges
  • Compare switches, routers, and access points and their roles
  • Configure and troubleshoot basic connectivity using common tools
  • Describe core network security threats and defenses

Course Content

Module 1 — Introduction to Networks
What networks are, why they exist, and the vocabulary you will use for the rest of the course.

  • 1.1 What Is a Network?
  • Module 1 Quiz — Introduction to Networks

Module 2 — Network Models: OSI & TCP/IP
The layered models that let engineers design, build, and troubleshoot networks in a structured way.

Module 3 — IP Addressing & Subnetting
How devices are logically addressed, and how large networks are divided into efficient subnets.

Module 4 — Devices, Ethernet & Switching
The hardware that moves frames on a LAN and how switches make forwarding decisions.

Module 5 — Network Services & Security
The services that make networks usable (DNS, DHCP) and the fundamentals of keeping them safe.

Final Certification Exam
A comprehensive exam covering all five modules. You must score 70% or higher to pass and complete the course.