Which is a key benefit of fiber-optic cabling?

• A. Immune to all interference
• B. Extremely high throughput
• C. Cheaper than copper in all applications
• D. Requires less expensive transceivers

Answer: (B)

Fiber-optic cabling is prized for its ability to move extremely large amounts of data quickly. The light-based transmission in glass or plastic offers enormous bandwidth and very low signal loss over long distances, which translates into much higher data rates than copper can typically provide. That combination—high bandwidth and low attenuation—drives the strongest, most lasting throughput advantage, making extremely high throughput the best choice.

While fiber is largely immune to electrical interference, saying it’s immune to all interference is oversimplified. It handles EMI very well, which is a major plus in noisy environments, but issues like physical damage, connector losses, and dispersion can still affect performance. As for cost, fiber isn’t universally cheaper in every situation; upfront costs and transceiver prices can be higher, though long-term operating costs may vary by scenario.