JATC FIBER OPTICS FINAL EXAM CORRECT QUESTIONS AND ANSWERS
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Course
FOA CFOT.
Institution
FOA CFOT.
JATC FIBER OPTICS FINAL EXAM CORRECT QUESTIONS AND ANSWERS
Fiber optics is used in cars to connect their electronic systems. - True
Copper networks can be converted to fiber optics using _____. - Media converters
Telephone networks have been converted to fiber, including long distanc...
JATC FIBER OPTICS FINAL EXAM CORRECT
QUESTIONS AND ANSWERS
Fiber optics is used in cars to connect their electronic systems. - True
Copper networks can be converted to fiber optics using _____. - 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. - False
Which of the following communication systems typically use fiber-optic backbones? - -
CATV
- Cell phones
- Telephones
- Internet
In an industrial environment, fiber is most often used to _____. - 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. - True
The bandwidth and distance capability of optical fiber means that _____. - - Less
maintenance is required
- Fewer repeaters are needed
- Fewer cables are needed
- Less power is consumed by the network
The protective gear every voice/data/video (VDV) installer must always wear is _____. -
Eye protection
Information on the safety of chemicals used in fiber optics are _____. - In MSDS
supplied by the manufacturer.
Inspection microscopes can concentrate the light from a fiber into your eye causing
serious damage. - True
Bright red visible light is produced by a VFL that is safe to look at directly at the end of
the fiber. - False
A digital camera can see infrared light, so it can be used to determine if there is light
present in a fiber. - True
, Dangerous light from fiber optic cables is bright and easily visible. - False
During fiber optic installations, the most common danger is caused by _____. - 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 eye is damaged. - False
What are some potential hazards associated with the use of cleaning solvents that are
sometimes used when working with fiber optics? - - Vapors
- Skin irritation
To ensure that you are using proper protective eyewear, look for the _____ mark on
your glasses. - - ANSI Z87
Proper eyewear should include _____ for maximum protection from flying debris. - -
Side shields
SM fiber has a _____ light-carrying core than multimode (MM) fiber. - - Smaller
What is the core size of SM fiber? - 9 microns
The wavelength of light used for most fiber-optic systems is in the _____ region and
_____ to the human eye. - - Infrared
- Invisible
Multimode fiber has a larger core than single mode fiber measuring _____ microns in
diameter. - - 50 or 62.5 microns in diameter
In an optical fiber, the light is transmitted through the _____. - - Core
Rays of light transmitted in multimode fiber are called _____. - - Modes
The cladding of the fiber is stripped off the fiber when terminating. - False
What type of fiber optic cable would be used with a LED light source? - MM
Which of the following represents a single mode fiber size? - 9/125 microns
If a fiber optic cable has a "graded index" core, what type of fiber is it? - MM
"Thin strands of highly transparent glass or plastic that guide light" defines _____. - -
Optical fiber
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