What is the leading cause of fiber-optic link failure?

Question

Options

• Acontaminants
• Bcrushed fiber
• Cpoor testing practices
• Dbad connectors

• A
  95% (21)
• B
  5% (1)

Explanation

Contaminants - dust, oil, and dirt on fiber-optic connectors and end-faces - are the leading cause of fiber link failure because even microscopic particles block or scatter light transmission, degrading signal integrity or causing complete failure. Bad connectors (D) do cause problems but are less frequent than contamination, which can affect any connector over time regardless of quality. Crushed fiber (B) is a physical damage issue that occurs during installation or improper handling, making it situational rather than a leading cause. Poor testing practices (C) may cause undetected problems but don't directly cause link failure. Memory tip: Think "clean fiber = clear signal" - contamination is the #1 enemy because fiber-optic transmission is light-based, and anything blocking the path kills the signal.

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