Intro to IPv4 Subnetting
Start learning cybersecurity with CBT Nuggets. https://courses.cbt.gg/security In this video, Keith Barker covers the basics of IPv4 subnetting. This comprehensive introduction traverses quite a bit of material, including the different IP classes, network masks, and various other aspects of IPv4 that will enhance your networking skill set. Keith begins this in-depth video by outlining the theory behind why IPv4 is needed and how it’s set up to function. He’ll break down each component of an IP address, then demonstrate how they’re divided into the three primary classes necessary for subnetting. These classifications matter because they indicate the network number, host number, and use different default masks (i.e., a point of separation between the network and the host). This separation is often referred to as a “class boundary.” It also sets the stage for us to be able to chop up the entire network into smaller chunks of computers or even individual users in a process called “subnetting.” 🌐 Download the Free Ultimate Networking Cert Guide: https://blog.cbt.gg/5j92 ⬇️ 13-Week Study Plan: CCNA (200-301): https://blog.cbt.gg/92l6 Start learning with CBT Nuggets: • TCP/IP IPv4 | https://courses.cbt.gg/m8f • Building a Network Design | https://courses.cbt.gg/0g9 • Intro to Networking | https://courses.cbt.gg/tuv • CompTIA Network+ (N10-007) | https://courses.cbt.gg/lvb

IP Subnetting tutorial | How to subnet IPv4 addresses

Subnetting - Deep Dive

Spanning Tree Protocol (STP) | Cisco CCNA 200-301

Subnet Mask - Explained

Professor Messer - Seven Second Subnetting

OSI and TCP IP Models - Best Explanation

5 Steps to Building a Better IT Career

IPv6 Subnetting | What you guys ASKED for!

Subnetting Explained for Beginners (2026) — Subnet Mask, CIDR & Network ID Made Easy

Jumpstart Your Networking Career

IP Subnetting from CIDR Notations

IPv4 Addressing Lesson 2: Network IDs and Subnet Masks

Free CCNA | Subnetting (Part 1) | Day 13 | CCNA 200-301 Complete Course

what is an IP Address? // You SUCK at Subnetting // EP 1

IP Addresses and Subnetting

OSPF (Open Shortest Path First) | Cisco CCNA 200-301

VLANs Made Easy: Learn This Today!

Complete Networking for Cybersecurity Beginners (2026)

How to Become a Network Design Ninja

