ETA Fiber (FOI) Questions with 100% Correct
Answers
Two common multimode fiber sizes
62.5/125 and 50/125
What is the method to measure attentuation?
dB
What wavelength does fiber optic transmission occur?
Infrared (IR)
When inspecting fiber optic end faces, what us considered the safest?
Video Inspection Scope
When splicing fiber optic cable, what is the acceptable attenuation cost?
0.75
When light bends, such as when a straw in water appears distorted, what is occurring?
Refraction
Waht could occur if two fiber optic cables are connected using a coupler?
Fresnel Reflection
What must decrease to have additional modes?
Wavelength
What is a single-mode fiber optic transmission method that is lower in cost than
traditional lasers?
, VCSEL
What type of cable minimizes model dispersion?
Single mode 9/125
(T/F) Different wavelengths of light travel at the same speed.
False
Bending beyond the limit of the cable can cause _______?
Macrobends
Reflectance of the reflected power to incident power is denoted with _______?
dB
Which of the following uses VCSEL?
850 nm
OM5 is typically used for the latest and greatest ___________ cable.
Wideband
What part of the end face of a fiber optic cable can have slight defects without adversely
affecting attenuation?
Outer cladding
(T/F) Tier 1 test levels require optical loss testing and polarity verification.
True
(T/F) Graded index multimode fiber has less modal dispersion.
True
Answers
Two common multimode fiber sizes
62.5/125 and 50/125
What is the method to measure attentuation?
dB
What wavelength does fiber optic transmission occur?
Infrared (IR)
When inspecting fiber optic end faces, what us considered the safest?
Video Inspection Scope
When splicing fiber optic cable, what is the acceptable attenuation cost?
0.75
When light bends, such as when a straw in water appears distorted, what is occurring?
Refraction
Waht could occur if two fiber optic cables are connected using a coupler?
Fresnel Reflection
What must decrease to have additional modes?
Wavelength
What is a single-mode fiber optic transmission method that is lower in cost than
traditional lasers?
, VCSEL
What type of cable minimizes model dispersion?
Single mode 9/125
(T/F) Different wavelengths of light travel at the same speed.
False
Bending beyond the limit of the cable can cause _______?
Macrobends
Reflectance of the reflected power to incident power is denoted with _______?
dB
Which of the following uses VCSEL?
850 nm
OM5 is typically used for the latest and greatest ___________ cable.
Wideband
What part of the end face of a fiber optic cable can have slight defects without adversely
affecting attenuation?
Outer cladding
(T/F) Tier 1 test levels require optical loss testing and polarity verification.
True
(T/F) Graded index multimode fiber has less modal dispersion.
True
