ipv4 addressing lesson 2 network ids and subnet masks

subnetting made easy | understanding network ids
in this lesson on ip addressing you will learn all about network ids, subnet masks, and cidr notation. this lesson is the second of a series of three total lessons on ip addressing which break down the ipv4 address, network ids, subnet masks, and the ipv4 class system.

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lesson 1: https://www.youtube.com/watch?v=ddm9acrevqy
lesson 2: https://www.youtube.com/watch?v=xq3t14silv4
lesson 3: https://www.youtube.com/watch?v=4xlzlgygqw8it

ipv4 addressing lesson 2 network ids and subnet masks