Ethernet tutorials & labs.

The most complete Ethernet curriculum on the internet — from first principles (why networking exists, shared-media limits, packet switching, LAN evolution) before frame fields, then through the layered model, the physical layer, the MAC/PHY split, frame format, addressing, CRC/FCS, speed evolution, the MII interface family, auto-negotiation, duplex, switching, VLANs, flow control, jumbo frames, link aggregation, timing, PTP, TSN, SoC and DMA integration, RTL design, verification, debugging, data-center and automotive use, and interview mastery.