Using a vertical cable support structure can create issues for the cable attached to the pathway Several issues can result It the support work is not clone correctly. Which two of the following…

Question

Options

• ALower dB loss values
• BStretching of copper conductors and breakage of optical fiber strands
• CIncreased Interference levels
• DReduced expected useful life and performance
• ESlippage between the cable core and the sheath

• A
  14% (4)
• B
  76% (22)
• C
  7% (2)
• D
  3% (1)

Explanation

Poorly supported vertical cable runs place the cable under sustained mechanical stress from its own weight, which directly causes two specific physical failure modes. Option B is correct because gravity pulling an unsupported cable downward creates tensile stress that stretches copper conductors beyond their elastic limit and snaps brittle optical fiber strands. Option E is correct because that same downward force causes the inner core of the cable to slide independently of the outer sheath, a condition sometimes called "core slippage" or "telescoping," which distorts the cable's internal geometry and degrades signal integrity.

Option A is wrong because poor support increases dB loss, not decreases it -- lower loss would indicate better performance, the opposite of what a support failure produces. Option C is wrong because interference levels are driven by shielding quality and proximity to EMI sources, not by mechanical support methods. Option D, while intuitively appealing, describes a downstream consequence rather than a distinct root-cause condition; the actual failure mechanisms that reduce lifespan are B and E themselves.

Memory tip: Think of the two S words -- Stretch and Slip. Stretch describes what happens to the conductors (B), and Slip describes what happens between the core and sheath (E). If a cable is not held up properly, it stretches and slips.

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