> What's marketed as "Ethernet" today is vastly different from the 10base5 "yellow hose" originally called Ethernet.
The framing is compatible across all of these changes: your 802.11 NIC has an Ethernet MAC address and can talk to to a copper-connected GigE interface. Copper and fibre interfaces can also talk to each other.
Part of the reasons for the concept of OSI Layers is that you could change things at lower layers (Thicknet, Thinnet, co-ax, etc) and at higher layers (IP, AppleTalk, etc) and would continue to work.
The OSI Layer 2 is the same for all the "variants" of Ethernet. That makes it 'the same' as the original.
The framing is compatible across all of these changes: your 802.11 NIC has an Ethernet MAC address and can talk to to a copper-connected GigE interface. Copper and fibre interfaces can also talk to each other.
Part of the reasons for the concept of OSI Layers is that you could change things at lower layers (Thicknet, Thinnet, co-ax, etc) and at higher layers (IP, AppleTalk, etc) and would continue to work.
The OSI Layer 2 is the same for all the "variants" of Ethernet. That makes it 'the same' as the original.