JATC Fiber Optics Final Exam Questions and Answers Fiber optics is used in cars to connect their electronic systems. - Answer ✔️✔️-True Copper networks can be converted to fiber optics using _____. - Answer ✔️✔️-Media converters Telephone networks have been converted to fiber, including long distance and metropolitan networks, but fiber to the home (FTTH) is not yet feasible. - Answer ✔️✔️-False Which of the following communication systems typically use fiber -optic backbones? - Answer ✔️✔️-- CATV - Cell phones - Telephones - Internet In an industrial environment, fiber is most often used to _____. - Answer ✔️✔️-Prevent electromagnetic interference An advantage of optical fiber is the fact that it is the most cost effective means of transporting information over long distances. - Answer ✔️✔️-True The bandwidth and distance capability of optical fiber means that _____. - Answer ✔️✔️-- Less maintenance is required - Fewer repeaters are needed - Fewer cables are needed - Less power is c onsumed by the network The protective gear every voice/data/video (VDV) installer must always wear is _____. - Answer ✔️✔️-Eye protection Information on the safety of chemicals used in fiber optics are _____. - Answer ✔️✔️-In MSDS supplied by the manufactu rer. Inspection microscopes can concentrate the light from a fiber into your eye causing serious damage. - Answer ✔️✔️-True Bright red visible light is produced by a VFL that is safe to look at directly at the end of the fiber. - Answer ✔️✔️-False A digita l camera can see infrared light, so it can be used to determine if there is light present in a fiber. - Answer ✔️✔️-True Dangerous light from fiber optic cables is bright and easily visible. - Answer ✔️✔️-False During fiber optic installations, the most co mmon danger is caused by _____. - Answer ✔️✔️-
Fiber scraps or shards by cleaving, splicing, and termination. If you inspect a fiber optic connector that is connected to a laser source with a microscope, you will experience a high level of pain while your e ye is damaged. - Answer ✔️✔️-False What are some potential hazards associated with the use of cleaning solvents that are sometimes used when working with fiber optics? - Answer ✔️✔️-- Vapors - Skin irritation To ensure that you are using proper protective eyewear, look for the _____ mark on your glasses. - Answer ✔️✔️-- ANSI Z 87 Proper eyewear should include _____ for maximum protection from flying debris. - Answer ✔️✔️-- Side shields SM fiber has a _____ light -carrying core than multimode (MM) fiber. - Answer ✔️✔️-- Smaller What is the core size of SM fiber? - Answer ✔️✔️-9 microns The wavelength of light used for most fiber -optic systems is in the _____ region and _____ to the human e ye. - Answer ✔️✔️-- Infrared - Invisible Multimode fiber has a larger core than single mode fiber measuring _____ microns in diameter. - Answer ✔️✔️-- 50 or 62.5 microns in diameter In an optical fiber, the light is transmitted through the _____. - Answer ✔️✔️-- Core Rays of light transmitted in multimode fiber are called _____. - Answer ✔️✔️-- Modes The cladding of the fiber is stripped off the fiber when terminating. - Answer ✔️✔️-False What type of fiber optic cable would be used with a LED light source? - Answer ✔️✔️-MM Which of the following represents a single mode fiber size? - Answer ✔️✔️-9/125 microns If a fiber optic cable has a "graded index" core, what type of fiber is it? - Answer ✔️✔️-MM "Thin strands of highly transparent glass or plastic that guide light" defines _____. - Answer ✔️✔️-- Optical fiber The term "nanometer" is a measurement that is often used in fiber optics to express _____. - Answer ✔️✔️-Wavelengths of light
Fiber scraps or shards by cleaving, splicing, and termination. If you inspect a fiber optic connector that is connected to a laser source with a microscope, you will experience a high level of pain while your e ye is damaged. - Answer ✔️✔️-False What are some potential hazards associated with the use of cleaning solvents that are sometimes used when working with fiber optics? - Answer ✔️✔️-- Vapors - Skin irritation To ensure that you are using proper protective eyewear, look for the _____ mark on your glasses. - Answer ✔️✔️-- ANSI Z 87 Proper eyewear should include _____ for maximum protection from flying debris. - Answer ✔️✔️-- Side shields SM fiber has a _____ light -carrying core than multimode (MM) fiber. - Answer ✔️✔️-- Smaller What is the core size of SM fiber? - Answer ✔️✔️-9 microns The wavelength of light used for most fiber -optic systems is in the _____ region and _____ to the human e ye. - Answer ✔️✔️-- Infrared - Invisible Multimode fiber has a larger core than single mode fiber measuring _____ microns in diameter. - Answer ✔️✔️-- 50 or 62.5 microns in diameter In an optical fiber, the light is transmitted through the _____. - Answer ✔️✔️-- Core Rays of light transmitted in multimode fiber are called _____. - Answer ✔️✔️-- Modes The cladding of the fiber is stripped off the fiber when terminating. - Answer ✔️✔️-False What type of fiber optic cable would be used with a LED light source? - Answer ✔️✔️-MM Which of the following represents a single mode fiber size? - Answer ✔️✔️-9/125 microns If a fiber optic cable has a "graded index" core, what type of fiber is it? - Answer ✔️✔️-MM "Thin strands of highly transparent glass or plastic that guide light" defines _____. - Answer ✔️✔️-- Optical fiber The term "nanometer" is a measurement that is often used in fiber optics to express _____. - Answer ✔️✔️-Wavelengths of light
