What are two differences between optical-fiber cabling and copper cabling? (Choose two.)

BNC connectors are typically used for coaxial copper cables, not fiber optic connections. Fiber connections use connectors like LC, SC, ST, or MPO/MTP.

Optical fiber cables consist of a central glass or plastic "core" where light travels, surrounded by a "cladding" layer with a lower refractive index. This cladding reflects light back into the core, enabling total internal reflection which guides the light signal along the fiber.

The cladding is designed to *reflect* light back into the core, not to pass data through it. Data is carried exclusively within the core.

Unlike copper cabling which transmits electrical signals, optical fiber cabling transmits data as pulses of light. This light travels through the core of the fiber optic strand, enabling high-speed data transmission over long distances with less signal degradation.

RJ-45 connections are standard for copper Ethernet cables. Fiber optic connections use various fiber connectors (LC, SC, ST, etc.), not RJ-45.