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220-801 · Question #414

Which of the following cable types has the LONGEST transmission range?

The correct answer is C. Single-mode fiber. Single-mode fiber optic cable uses a very narrow core (around 8–10 microns) that allows only a single light path, eliminating modal dispersion and enabling signal transmission over distances exceeding 40 km - and up to 100 km or more with amplification. Multimode fiber is…

Networking

Question

Which of the following cable types has the LONGEST transmission range?

Options

  • ACAT6
  • BCAT5e
  • CSingle-mode fiber
  • DMultimode fiber

How the community answered

(20 responses)
  • A
    5% (1)
  • B
    5% (1)
  • C
    90% (18)

Explanation

Single-mode fiber optic cable uses a very narrow core (around 8–10 microns) that allows only a single light path, eliminating modal dispersion and enabling signal transmission over distances exceeding 40 km - and up to 100 km or more with amplification. Multimode fiber is limited to roughly 550 meters to 2 km due to modal dispersion. Both CAT5e and CAT6 copper Ethernet cables are limited to 100 meters (328 feet) per segment for standard 1 Gbps operation.

Topics

#fiber optic#single-mode fiber#cable types#transmission range

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