Networking Fundamentals

Structured study notes from CompTIA A+ and Network+ certification prep — the foundations every technical role builds on.

These are working notes from CompTIA A+ and Network+ certification study — covering everything from physical network hardware to IPv6 and cloud/edge architecture. I write them the way I’d want them explained to me: plain language first, jargon second. Start at the top if you’re new to networking; jump to a specific topic if you already know the basics.