A technician is assigned the task of connecting two buildings 125 meters apart (410 ft.). Which of the following cable types should the technician consider?

The correct answer is D. Single mode fiber. Copper Ethernet cables (CAT5, CAT5e, CAT6) have a maximum segment distance of 100 meters (328 feet) before signal degradation causes unreliable communication. At 125 meters, both CAT5 (option B) and CAT5e (option A) would exceed this limit. Single-mode fiber optic cable…

Network implementation

Question

Options

ACAT5e Cable
BCAT5 Cable
CPlenum
DSingle mode fiber

How the community answered

(33 responses)

A
15% (5)
B
9% (3)
C
6% (2)
D
70% (23)

Explanation

Copper Ethernet cables (CAT5, CAT5e, CAT6) have a maximum segment distance of 100 meters (328 feet) before signal degradation causes unreliable communication. At 125 meters, both CAT5 (option B) and CAT5e (option A) would exceed this limit. Single-mode fiber optic cable supports distances of many kilometers, making it the appropriate choice for inter-building connections beyond 100 meters. Option C, Plenum, refers to a fire-resistant cable jacket rating for use in air-handling spaces - it describes a safety classification, not a distance capability.

Topics

#single mode fiber#cable distance limitation#building interconnect#fiber optic

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