With what are APC connectors used?

Question

Options

• ACategory 6a cables that need tight radius bends
• Bcopper network cables in corrosive environments
• Csingle-mode fiber-optic cables to reduce return loss
• Dhigh-density copper patch panels

• A
  2% (1)
• B
  7% (4)
• C
  89% (48)
• D
  2% (1)

Explanation

APC (Angled Physical Contact) connectors feature a ferrule end-face polished at an 8-degree angle, which deflects reflected light away from the fiber core rather than back toward the source. This design dramatically reduces return loss (back-reflection), making APC connectors the standard choice for single-mode fiber-optic installations where signal integrity is critical - confirming C is correct.

Why the distractors are wrong:

• A - APC connectors are optical, not copper; Category 6a cable bend radius is managed with physical cable management, not connector type.
• B - APC connectors are fiber-optic components entirely; copper cables use RJ45 or similar connectors, not APC.
• D - High-density copper patch panels use punch-down or RJ45 connections; APC has no role in copper infrastructure.

Memory tip: Think of the A in APC as "Angle" - the angled polish is the whole point, and angles only make sense in optics (light bounces at angles), not in copper. If you remember angled = light = fiber, you'll never confuse APC with copper connectors.

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