Fiber infrastructure refers to the comprehensive network of fiber optic cables, equipment, and technologies that facilitate high-speed data transmission using light pulses. Yet, the infrastructure that supports connectivity is largely out of sight and out of mind. The entire structure acts as the modern foundation for telecommunications, supporting. The hardware infrastructure of the Internet happens at layers 1 and 2 of the OSI model. Layer 1 provides the cable and radio wave media that interconnect devices, along with the network interface controller (NIC) installed within the computing device to which media connects. However, it's more common to see the cheap.