caption: a diagram that shows how the internet can be connected
exif: {"Image DocumentName": "Ethernet dominant LAN technology: cheap  20 for 100Mbs!", "Image ImageDescription": "first wildey used LAN technology. Simpler, cheaper than token LANs and ATM. Kept up with speed race: 10, 100, 1000 Mbps. Metcalfe\u2019s Etheret. sketch. : DataLink Layer.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}