Final ETA Fiber Certification Installer
WOAC Exam with Correct Answers
2025/2026 Updated.
The class designation for lasers that run at low power levels so that prolonged exposure will not
cause eye damage is - Answer Class I
Each chemical you use should be accompanied by a/an - Answer Material Safety Data Sheet
(MSDS)
What is the best practice for disposing of fiber optic waste? - Answer Dispose of all fiber
optic waste in debris, sealable containers provided.
What year was the first North American fiber optic telephone system installed? - Answer
1977
What is FDDI? - Answer Fiber Distributed Data Interface - connector used to link electronics
& fiber transmission LAN systems.
Bandwidth can be defined as _________________? - Answer amount of information or data
it can carry in a given amount of time.
List some advantages of optical fiber cables over copper cables? - Answer Bandwidth,
Electromagnetic Immunity, Weight, Safety, Size, Attenuation, Security, Upgradable
Fiber optic cables are made of _____________ material and are therefore immune to
________________. - Answer dielectric, EMI
the four basic components of a fiber optic link are the: - Answer transmitter, receiver, fiber
optic cable, connectors
LEDs have a relatively ___________ spectral width, while a laser's spectral width is much
_____________. - Answer wide, narrow
A ___________ is the light source used with laser optimized multimode fiber. - Answer
VCSEL (vertical-cavity surface-emitting laser)
The acronym for LASER is? - Answer Light Amplification by Stimulated Emission of Radiation
, What light source/wavelength is typically utilized in multimode plastic optical fibers? - Answer
Visible (650 nm LED)
What are the multimode operating wavelengths? - Answer 850nm, 1300nm
What light sources are used for multimode transmissions? - Answer LED, VCSEL
What are the single mode operating wavelengths? - Answer 1310 nm, 1550 nm, 1625 nm
What light source is used for single mode transmissions? - Answer LASER
What component in a receiver circuit converts optical signals to electrical energy? - Answer
Photodiode
Combining two or more wavelengths in a single fiber is an example of? - Answer
Multiplexing
What are the standard operating wavelengths for single mode and multimode fiber? - Answer
850nm, 1300nm, 1550nm
What core sizes are commonly used for SM & MM fiber? - Answer SM - 8-10 μm; MM - 62.5
μm (US), 50 μm (Europe)
Define the layers and their characteristics shown below? - Answer Buffer (900 μm), Acrylate
Coating (250 μm) Cladding (125 μm), Core (8-10 μm, 50 μm, or 62.5 μm)
What does the cladding do in a fiber optic cable? What is it responsible for? - Answer
Surrounding the core; provides the refractive index that allow total internal reflection of light
traveling in the core.
What is the mode? - Answer The potential paths for light to move through the fiber optic.
Singlemode fiber allows __________ path/s of light. - Answer single
Multimode fiber allows ____________ path/s of light. - Answer multiple
WOAC Exam with Correct Answers
2025/2026 Updated.
The class designation for lasers that run at low power levels so that prolonged exposure will not
cause eye damage is - Answer Class I
Each chemical you use should be accompanied by a/an - Answer Material Safety Data Sheet
(MSDS)
What is the best practice for disposing of fiber optic waste? - Answer Dispose of all fiber
optic waste in debris, sealable containers provided.
What year was the first North American fiber optic telephone system installed? - Answer
1977
What is FDDI? - Answer Fiber Distributed Data Interface - connector used to link electronics
& fiber transmission LAN systems.
Bandwidth can be defined as _________________? - Answer amount of information or data
it can carry in a given amount of time.
List some advantages of optical fiber cables over copper cables? - Answer Bandwidth,
Electromagnetic Immunity, Weight, Safety, Size, Attenuation, Security, Upgradable
Fiber optic cables are made of _____________ material and are therefore immune to
________________. - Answer dielectric, EMI
the four basic components of a fiber optic link are the: - Answer transmitter, receiver, fiber
optic cable, connectors
LEDs have a relatively ___________ spectral width, while a laser's spectral width is much
_____________. - Answer wide, narrow
A ___________ is the light source used with laser optimized multimode fiber. - Answer
VCSEL (vertical-cavity surface-emitting laser)
The acronym for LASER is? - Answer Light Amplification by Stimulated Emission of Radiation
, What light source/wavelength is typically utilized in multimode plastic optical fibers? - Answer
Visible (650 nm LED)
What are the multimode operating wavelengths? - Answer 850nm, 1300nm
What light sources are used for multimode transmissions? - Answer LED, VCSEL
What are the single mode operating wavelengths? - Answer 1310 nm, 1550 nm, 1625 nm
What light source is used for single mode transmissions? - Answer LASER
What component in a receiver circuit converts optical signals to electrical energy? - Answer
Photodiode
Combining two or more wavelengths in a single fiber is an example of? - Answer
Multiplexing
What are the standard operating wavelengths for single mode and multimode fiber? - Answer
850nm, 1300nm, 1550nm
What core sizes are commonly used for SM & MM fiber? - Answer SM - 8-10 μm; MM - 62.5
μm (US), 50 μm (Europe)
Define the layers and their characteristics shown below? - Answer Buffer (900 μm), Acrylate
Coating (250 μm) Cladding (125 μm), Core (8-10 μm, 50 μm, or 62.5 μm)
What does the cladding do in a fiber optic cable? What is it responsible for? - Answer
Surrounding the core; provides the refractive index that allow total internal reflection of light
traveling in the core.
What is the mode? - Answer The potential paths for light to move through the fiber optic.
Singlemode fiber allows __________ path/s of light. - Answer single
Multimode fiber allows ____________ path/s of light. - Answer multiple
