Lesson -1: IPv4 Address introduction

In this short and beginner-friendly video, I explain the basics of IPv4 addresses:

✅ What an IPv4 address is
✅ How it is made up of 32 bits, divided into four 8-bit sections (octets)
✅ What the "dotted decimal" format means
✅ The valid range for each octet (0 to 255 inclusive)
✅ And how to tell if an IP address is valid — with three practical examples

Perfect for beginners in networking or anyone who wants to solidify their fundamentals!

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