JATC Fiber Optics Final Questions &
Answers
Fiber optics is used in cars to connect their electronic systems. - ANSWERTrue
Copper networks can be converted to fiber optics using _____. - ANSWERMedia
converters
Telephone networks have been converted to fiber, including long distance and
metropolitan networks, but fiber to the home (FTTH) is not yet feasible. -
ANSWERFalse
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 _____. - ANSWERPrevent
electromagnetic interference
An advantage of optical fiber is the fact that it is the most cost effective means of
transporting information over long distances. - ANSWERTrue
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 consumed by the network
The protective gear every voice/data/video (VDV) installer must always wear is _____. -
ANSWEREye protection
Information on the safety of chemicals used in fiber optics are _____. - ANSWERIn
MSDS supplied by the manufacturer.
Inspection microscopes can concentrate the light from a fiber into your eye causing
serious damage. - ANSWERTrue
Bright red visible light is produced by a VFL that is safe to look at directly at the end of
the fiber. - ANSWERFalse
, A digital camera can see infrared light, so it can be used to determine if there is light
present in a fiber. - ANSWERTrue
Dangerous light from fiber optic cables is bright and easily visible. - ANSWERFalse
During fiber optic installations, the most common danger is caused by _____. -
ANSWERFiber 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. -
ANSWERFalse
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 Z87
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? - ANSWER9 microns
The wavelength of light used for most fiber-optic systems is in the _____ region and
_____ to the human eye. - 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. - ANSWERFalse
What type of fiber optic cable would be used with a LED light source? - ANSWERMM
Which of the following represents a single mode fiber size? - ANSWER9/125 microns
If a fiber optic cable has a "graded index" core, what type of fiber is it? - ANSWERMM
Answers
Fiber optics is used in cars to connect their electronic systems. - ANSWERTrue
Copper networks can be converted to fiber optics using _____. - ANSWERMedia
converters
Telephone networks have been converted to fiber, including long distance and
metropolitan networks, but fiber to the home (FTTH) is not yet feasible. -
ANSWERFalse
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 _____. - ANSWERPrevent
electromagnetic interference
An advantage of optical fiber is the fact that it is the most cost effective means of
transporting information over long distances. - ANSWERTrue
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 consumed by the network
The protective gear every voice/data/video (VDV) installer must always wear is _____. -
ANSWEREye protection
Information on the safety of chemicals used in fiber optics are _____. - ANSWERIn
MSDS supplied by the manufacturer.
Inspection microscopes can concentrate the light from a fiber into your eye causing
serious damage. - ANSWERTrue
Bright red visible light is produced by a VFL that is safe to look at directly at the end of
the fiber. - ANSWERFalse
, A digital camera can see infrared light, so it can be used to determine if there is light
present in a fiber. - ANSWERTrue
Dangerous light from fiber optic cables is bright and easily visible. - ANSWERFalse
During fiber optic installations, the most common danger is caused by _____. -
ANSWERFiber 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. -
ANSWERFalse
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 Z87
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? - ANSWER9 microns
The wavelength of light used for most fiber-optic systems is in the _____ region and
_____ to the human eye. - 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. - ANSWERFalse
What type of fiber optic cable would be used with a LED light source? - ANSWERMM
Which of the following represents a single mode fiber size? - ANSWER9/125 microns
If a fiber optic cable has a "graded index" core, what type of fiber is it? - ANSWERMM
