Has anyone here expanded internet connectivity to their garden with an ethernet cable? I am speaking about non-wireless communications. To some hut some 100 meters away? What are your experiences with it? Is it as simple as digging a cable trench, putting the cable in (maybe with some pipe to protect it) and covering it?
Are fibre optics a viable long-range alternative to copper ethernet cables for local area networks?
Use conduit. Include a pull line in case you want to add any cables later without digging it up.
And like everyone else said, fiber is probably better for the distance. You could either have media converters on either end, or better probably a couple switches with fiber ports.