CFOT Certified Fiber Optic Technician Exam
Timed Exam Mode - Simulated Conditions
The CFOT Certified Fiber Optic Technician Exam from The Fiber Optic Association (FOA) tests knowledge of fiber optic theory, optical fiber and cable types, connectors and terminations, splicing techniques, installation hardware, and testing procedures.
For total internal reflection to occur within an optical fiber, what must be the relationship between the refractive index of the core (n1) and the cladding (n2)?
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A
n1 must be less than n2.
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B
n1 must be greater than n2.
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C
n1 must be equal to n2.
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D
The relationship is irrelevant to total internal reflection.
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