FOA CFOT CERTIFICATION EXAM V11 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024/25

A fiber optic inspection microscope can increase the danger of high powered light sources by focusing the light coming out of a fiber into your eye. True or False? - ANSWER True A fiber optic power meter measures absolute power in dBM (dB referenced to 1 mw) and, when used with a light source, can measure insertion loss expressed in dB. True or False? - ANSWER True When we say 62.5/125 fiber, what does "62.5" mean? - ANSWER core size, the diameter in microns When we say 50/125 fiber, what does "125" mean? - ANSWER cladding size, the diameter in microns OM3 and OM4 multimode fiber with a 50/125 micron core are now a popular option in premises cabling systems because they _____. - ANSWER Are "laser optimized" which gives more distance capability with gigabit networks using laser sources In-multimode fiber, the attenuation (reduction in optical power) of the fiber is _____ at 850 nm than at 1300 nm. - ANSWER Higher Which of the following represents a singlemode (smaller core size) fiber size? - ANSWER 9/125 micron Singlemode fiber has _____ bandwidth than multimode fiber. - ANSWER greater Most plastic optical fibers are _____. - ANSWER large core step-index When you strip singlemode or graded index multimode mode glass fiber, you are removing the ____. - ANSWER Primary buffer coating