FOA CFOS C Practice Questions - FOA Certified Fiber Optic Specialist - Connectors (CFOS C) Exam

What is the key difference between UPC and APC connector polish types?

UPC uses a flat ferrule face; APC uses a curved face UPC has a slightly domed ferrule face perpendicular to the fiber axis; APC has an 8-degree angled face UPC is for multimode only; APC is for singlemode only There is no difference — they are interchangeable

Correct Answer:

UPC has a slightly domed ferrule face perpendicular to the fiber axis; APC has an 8-degree angled face

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