N10-005 · Question #491
A company recently added an addition to their office building. A technician runs new plenum network cables from the switch on one side of the company's gymnasium 80 meters (262 ft.) to the new…
The correct answer is D. EMI. The cables are draped across light fixtures, which are a known source of Electromagnetic Interference (EMI). Fluorescent lighting in particular generates significant EMI that can corrupt data signals in nearby copper cables, causing intermittent connectivity. Distance at 80…
Question
A company recently added an addition to their office building. A technician runs new plenum network cables from the switch on one side of the company's gymnasium 80 meters (262 ft.) to the new offices on the other side, draping the wires across the light fixtures. Users working out of the new offices in the addition complain of intermittent network connectivity. Which of the following is MOST likely the cause of the connectivity issue?
Options
- AdB loss
- BDistance
- CIncorrect connector type
- DEMI
- ECrosstalk
How the community answered
(32 responses)- A6% (2)
- B13% (4)
- D78% (25)
- E3% (1)
Explanation
The cables are draped across light fixtures, which are a known source of Electromagnetic Interference (EMI). Fluorescent lighting in particular generates significant EMI that can corrupt data signals in nearby copper cables, causing intermittent connectivity. Distance at 80 meters is within the 100-meter maximum for Cat6, so it is not the issue. dB loss is more of a fiber concern. Crosstalk occurs between pairs within the cable itself, not from external sources. Connector type would likely cause a complete failure rather than intermittent issues.
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