Ever wonder why your video calls lag while your emails go through just fine? That’s not magic—it’s QoS and CoS at work!

In this episode of Technically U, we break down the critical differences between Quality of Service (QoS) and Class of Service (CoS), how they function at different layers of the network, and why they’re essential for modern IT environments.

Learn how traffic shaping, packet tagging, and prioritization can make or break real-time communication. We also explore how network providers identify and act on these markings to deliver smooth performance across both IP and Ethernet networks.

🎧 What You’ll Learn:

What is QoS and how it improves network performance

What is CoS and how it tags traffic at Layer 2

Key differences between QoS and CoS

How IP and Ethernet standards handle prioritization

Real-world use cases in enterprise and service provider networks

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