JATC Fiber Optics Final Exam Questions
and Answers 100% Solved | Rated A+
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
1
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,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.
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, 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
3
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
and Answers 100% Solved | Rated A+
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
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,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.
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, 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
3
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
