Professor Messer’s CompTIA 220-1002 A+ Study Group – September 2021

Professor Messer’s CompTIA A+ Core 2 Course Notes: Click here to learn about my Core 2 A+ downloadable PDF Course Notes. Professor Messer’s 220-1002 Core 2 A+ Practice Exams: Are you ready for your 220-1002 exam? Click here to learn about my 220-1002 Core 2 A+ Practice Exams. How well do you know your A+ …

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IPv6 Subnet Masks – N10-008 CompTIA Network+ : 1.4

The need to subnet is minimized in IPv6, but there are still subnetting fundamentals that are important to know. In this video, you’ll learn about IPv6 subnetting and how most networks implement IPv6 subnet masks. << Previous Video: IPv6 Addressing Next: Configuring IPv6 >>

Calculating IPv4 Subnets and Hosts – N10-008 CompTIA Network+ : 1.4

Before you can use a shortcut to calculate subnet values, it’s useful to understand the binary math. In this video, you’ll learn how to calculate the important values of an IP subnet based on the IP address and subnet mask. << Previous Video: IPv4 Subnet Masks Next: Magic Number Subnetting >>

IPv4 Subnet Masks – N10-008 CompTIA Network+ : 1.4

The IPv4 subnet mask determines which devices are on your local IP subnet. In this video, you’ll learn about the structure of the IPv4 subnet mask and how to calculate the subnet mask based on binary and CIDR-block notations. << Previous Video: Classful Subnetting Next: Calculating IPv4 Subnets and Hosts >>