Introduction to Ethernet | CCNA Layer 2 Basics

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In this video, I explain Ethernet, the dominant Layer 2 (Data Link Layer) technology used in modern networks. Ethernet is the foundation of switching and local area networks, and understanding it is essential for anyone learning networking.

In the video, we explore:
What Ethernet is and why it matters
A brief history of Ethernet and IEEE 802.3
The structure of an Ethernet frame
Source and destination MAC addresses
EtherType, payload, and frame check sequence (CRC)
Optional VLAN tagging (IEEE 802.1Q)

This video is perfect for networking beginners, students, and IT professionals who want a clear and practical understanding of Ethernet and Layer 2 switching concepts.

📌 If you’re studying networking, switching, VLANs, or preparing for certifications like CCNA, this video is a must-watch.

☑️ Chapter list:
============================================
00:00 Introduction
00:16 All about Ethernet
00:43 History of Ethernet
01:33 The Ethernet Frame
04:41 Examining the Frame Header
06:26 Optional VLAN Tag field
07:12 Summary

🟩 Related Videos and Links:
===============================================
   • Introduction to Network Switching | Layer ...  
   • How a Network Switch Works | CCNA Layer 2 ...  

🟦 About
==============================================
Welcome to telecomTech, where telecom and networking technologies... are simply explained! I’m Lazarus, a telecom professional with over 25 years of experience in network design, architecture, and telecom technologies. Over my career, I’ve led major projects, trained professionals, and helped countless individuals earn certifications and advance their careers.

My goal is to make networking and telecom concepts clear, practical, and engaging—the way I wish they were taught when I started learning!

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