What is a Subnet Mask? | Subnetting Step by Step – Ep. 2
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📺 Episode 2: What Is a Subnet Mask?
What exactly is a subnet mask—and why does every IP address come with one?
In this episode, we break down:
✅ What a subnet mask is (like 255.255.255.0)
✅ How it separates the network and host parts of an IP
✅ CIDR notation (/24, /25, /26...)
✅ Why subnet masks affect how many devices fit in a network
✅ What happens in a /24 vs /30 subnet
By the end, you'll understand how subnet masks help organize the internet into manageable chunks.
👉 Up Next: Learn how to find the Network ID, Broadcast Address, and host range using subnet masks.
🎓 Perfect for beginners, students, and aspiring network pros.