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 as BNC connectors are commonly used with coaxial cables, not optical-fiber cables.
B. The glass core component is encased in a cladding: This statement is true. Optical-fiber cables consist of a glass or plastic core that is surrounded by a cladding material. The cladding is designed to reflect light back into the core and prevent it from leaking out of the fiber.
C. The data can pass through the cladding: This statement is incorrect. The cladding is not designed to allow data to pass through it. Instead, data is transmitted through the core of the fiber.
D. Light is transmitted through the core of the fiber: This statement is true. Unlike copper cabling, which transmits data through electrical signals, optical-fiber cabling transmits data using light. The core of the fiber is designed to guide and focus the light so that it travels over long distances without significant loss of signal strength.
E. Fiber connects to physical interfaces using RJ-45 connections: This statement is incorrect. RJ-45 connectors are commonly used with copper cabling, but not with optical-fiber cabling. Instead, optical-fiber cables typically use connectors such as LC, SC, or ST, which are designed specifically for use with optical-fiber cables.
In summary, the two main differences between optical-fiber cabling and copper cabling are that optical-fiber cabling uses a glass or plastic core encased in a cladding, and it transmits data using light rather than electrical signals.