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by Hikikomori 65 days ago
About 0.6c for cat6 cables, different types of cables can be slightly faster. Speed of light in fiber is also 0.6c due to the refractive index of the core.
1 comments

Is that through solid-core fiber? Because hollow-core fiber also exists.
Yes. It does, but it's not widely used, it barely just got out of the lab.