Which statement best describes Multimode Fiber?

Which statement best describes Multimode Fiber?

• A. Multimode Fiber supports distances beyond 100 kilometers.
• B. Multimode Fiber can only be used for copper twisted-pair networks.
• C. Multimode Fiber uses a single light path.
• D. Multimode Fiber supports shorter distances up to approximately 2 kilometers.

Answer: (D)

Multimode fiber carries light along multiple paths inside a relatively large core, which leads to modal dispersion. Different paths cause signals to arrive at slightly different times, so the signal quality degrades faster as distance increases. Because of that dispersion, multimode fiber is best suited for shorter links, typically up to about 2 kilometers in common deployments. Distances beyond that are usually reserved for single-mode fiber, which has a much smaller core and a single light path, reducing dispersion and enabling much longer runs. It’s fiber, not copper, so it’s not used with copper twisted-pair networks, and it does not use a single light path.

Multimode fiber carries light along multiple paths inside a relatively large core, which leads to modal dispersion. Different paths cause signals to arrive at slightly different times, so the signal quality degrades faster as distance increases. Because of that dispersion, multimode fiber is best suited for shorter links, typically up to about 2 kilometers in common deployments. Distances beyond that are usually reserved for single-mode fiber, which has a much smaller core and a single light path, reducing dispersion and enabling much longer runs. It’s fiber, not copper, so it’s not used with copper twisted-pair networks, and it does not use a single light path.