Fiber internet uses fiber-optic lines, which are cables made of bundled strands of glass. Each glass strand acts as a conduit for light signals that relay digital code from one end to the other at the speed of, well, light.
This technology allows for internet speeds far beyond what you get from DSL or cable because each fiber-optic line can carry multiple signals at top speeds simultaneously. Fiber internet also bypasses congestion, latency, and signal degradation issues that frequently occur with cable and DSL networks.
