Subnetting Explained | Subnet Mask, CIDR & Easy Calculations | Day 03 Networking Course

Welcome to Tech Ai Ops

In Day 03, we dive into one of the most important and powerful topics in networking — Subnetting. This is a must-know skill for CCNA, DevOps, Cloud, and Network Engineers.

You’ll learn how to break large networks into smaller subnetworks, improve performance, and manage IP addresses efficiently.

What you’ll learn in Day 03

• What is Subnetting and why it is used
• Understanding Subnet Mask
• CIDR notation explained (e.g., /24, /16, /30)
• How to calculate subnets step by step
• Number of hosts per subnet
• Real-world subnetting examples

Who this series is for

• Beginners starting networking from zero
• Students preparing for CCNA or networking careers
• IT / System / Cloud / DevOps engineers
• Anyone interested in Cybersecurity or Infrastructure

Resources / Community

All links are available in the pinned comment below 👇

• GitHub (notes, labs, configs)
• Discord (study group / Q&A)
• LinkedIn (connect with me)
• Business / Queries (Email)

Check the pinned comment to access all resources.

Challenge

Comment your level:
Beginner | Intermediate | Advanced

And tell me what you want to learn next:

VLAN | Routing | NAT | Cloud Networking

Follow the full 30 Days Networking Ninja Challenge to go from Noob → Pro.

#networking #ccna #subnetting #cidr #networkengineer #cloudnetworking #cybersecurity

Видео Subnetting Explained | Subnet Mask, CIDR & Easy Calculations | Day 03 Networking Course канала Tech Ai Ops