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…
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)- A5% (1)
- B5% (1)
- C90% (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.
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