Prefix length, the magic number, VLSM, and IPv6.
Master the math that decides where one network ends and the next begins. After this module you can subnet a /24 in your head, design an address plan with VLSM, and read an IPv6 address without flinching.
Welcome to module 2. Prefix length, the magic number, VLSM, and IPv6. I'll meet you again at the top of every chapter — this module's course coverage is Foundational, so don't rush it. Pick chapter 2.1 below to start.
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