What are two differences between optical-fiber cabling and copper cabling? (Choose two.)
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A. B. C. D. E.BD.
The correct answers are B and D.
A. A BNC connector is used for fiber connections - This statement is incorrect. BNC connectors are commonly used for copper-based coaxial cables. Optical-fiber cables use specialized connectors, such as ST, SC, and LC connectors.
B. The glass core component is encased in a cladding - Optical-fiber cabling consists of a glass or plastic core that is surrounded by a cladding layer. The cladding helps to reflect light back into the core, allowing the signal to propagate over longer distances without losing strength. This cladding layer is not present in copper cabling.
C. The data can pass through the cladding - This statement is incorrect. The cladding layer of optical-fiber cabling is designed to reflect light back into the core, not to transmit data. Data is transmitted through the core of the fiber.
D. Light is transmitted through the core of the fiber - Optical-fiber cabling transmits data by sending light pulses through the core of the fiber. This is a key difference between optical-fiber cabling and copper cabling, which uses electrical signals to transmit data.
E. Fiber connects to physical interfaces using RJ-45 connections - This statement is incorrect. RJ-45 connectors are used for copper cabling, not for optical-fiber cabling. Optical-fiber cabling uses specialized connectors, such as ST, SC, and LC connectors.