This is the playlist for the videos I created to help with the Cisco CCNA Routing and Switching course 1. This is the 6.0 version.

The direct link to the first video in the playlist is:  It covers Binary to Decimal conversion.

The first video is below and you can click on the YouTube logo in the video to get a larger size.


Chapter 1:


Chapter 2:

Chapter 3:

Chapter 4:

Chapter 5:

Chapter 6:

Chapter 7:

Chapter 8:

Chapter 9:

Chapter 10:

Chapter 11, part 1 of 2:

Chapter 11, part 2 of 2:

Basics of Binary

Binary to Decimal conversion using addition and subtraction

Subnetting the 4th Octet

Subnetting ANDing

Advanced Subnetting