ETA Fiber Certification Technician (FOT) WOAC
Questions with Correct Answers 2026-2027
A is used with an overfilled light source when testing loss in a multimode fiber a
nd is placed on the MQJ. - CORRECT ANSWER -Mandrel Wrap
Light Source
Back reflections from a mechanical interconnection can interfere with the operation of a
. - CORRECT ANSWER -singlemode laser
Checking the power at the should be the first test that is done when troubl
eshooting a network problem. - CORRECT ANSWER -receiver
Multiple channels carrying digital signals on the same fiber is an example of
. - CORRECT ANSWER -multiplexing
dispersion affects both singlemode and multimode fibers. -
CORRECT ANSWER -Chromatic material
Tensile strength is the ability of a fiber to be pulled without breaking. (True/False) -
CORRECT ANSWER -True
Which of the following is a workable solution to combat Chromatic Dispersion?
a) Reduce cable length
b) Reduce light source spectral width
c) Reduce light source wavelength
d) Reduce light source power - CORRECT ANSWER -b) Reduce light source spectral width
,The NEC considers an installed fiber optic cable this is not terminated at equipment other than a
connector an not tagged for future use as a(an) cable. - CORRECT ANSWER -
abandoned
Find the link attenuation allowance for a fiber link that is 700 meters in length, has 3 matted pai
rs, and 2 splices with a 1300nm transmitter.
a) 3.90dB
b)4.55dB
c) 3.60dB
d) 3.00dB - CORRECT ANSWER -a) 3.90dB
Tier 1 testingRaccomplishes insertion loss, cable length, polarity verification, and overall fiber lin
k attenuation and reflectance loss at connectors and splices. (True/False) - CORRECT ANSWER -
True
A mechanical splice will be identified on an OTDR trace as a event. -
CORRECT ANSWER -reflective
A fusion splicer creates a permanent splice when the optical fiber is melted together by an elect
ric arc between a pair of electrodes. (True/False) - CORRECT ANSWER -True
An optical attenuator is a passive device that is used to reduce the of
an optical signal. - CORRECT ANSWER -power level
Fusion splices are most likely used in the middle of a fiber run. - CORRECT ANSWER -
long
, A light source and power meter are connected together with two MQJ's. The reference power o
n the power meter is -
15.3dBm. A 200Rmeter cable is inserted between the MQJ's and the measured power on the me
ter now reads -17.5dBm. the loss would be ________ . - CORRECT ANSWER -2.2
There are individual fiber, unit, and group identification color codes recognized by th
e Optical Fiber Cable Code standard TIA-598.
a) 24
b) 36
c) 48
d) 144 - CORRECT ANSWER -b) 36
is the proper name for the modulation scheme used to convert analog sig
nals to a digital format. - CORRECT ANSWER -Pulse coded modulation
Return reflection or return loss can be reduced by the connector endface wit
h a PC finish.
a) Squaring
b) Rounding
c) Flattening
d) Beveling - CORRECT ANSWER -b) Rounding
For light to propagate down the fiber core, it must enter through the which is d
efined by the . - CORRECT ANSWER -cone of acceptance
NA - light gathering ability of the fiber
Questions with Correct Answers 2026-2027
A is used with an overfilled light source when testing loss in a multimode fiber a
nd is placed on the MQJ. - CORRECT ANSWER -Mandrel Wrap
Light Source
Back reflections from a mechanical interconnection can interfere with the operation of a
. - CORRECT ANSWER -singlemode laser
Checking the power at the should be the first test that is done when troubl
eshooting a network problem. - CORRECT ANSWER -receiver
Multiple channels carrying digital signals on the same fiber is an example of
. - CORRECT ANSWER -multiplexing
dispersion affects both singlemode and multimode fibers. -
CORRECT ANSWER -Chromatic material
Tensile strength is the ability of a fiber to be pulled without breaking. (True/False) -
CORRECT ANSWER -True
Which of the following is a workable solution to combat Chromatic Dispersion?
a) Reduce cable length
b) Reduce light source spectral width
c) Reduce light source wavelength
d) Reduce light source power - CORRECT ANSWER -b) Reduce light source spectral width
,The NEC considers an installed fiber optic cable this is not terminated at equipment other than a
connector an not tagged for future use as a(an) cable. - CORRECT ANSWER -
abandoned
Find the link attenuation allowance for a fiber link that is 700 meters in length, has 3 matted pai
rs, and 2 splices with a 1300nm transmitter.
a) 3.90dB
b)4.55dB
c) 3.60dB
d) 3.00dB - CORRECT ANSWER -a) 3.90dB
Tier 1 testingRaccomplishes insertion loss, cable length, polarity verification, and overall fiber lin
k attenuation and reflectance loss at connectors and splices. (True/False) - CORRECT ANSWER -
True
A mechanical splice will be identified on an OTDR trace as a event. -
CORRECT ANSWER -reflective
A fusion splicer creates a permanent splice when the optical fiber is melted together by an elect
ric arc between a pair of electrodes. (True/False) - CORRECT ANSWER -True
An optical attenuator is a passive device that is used to reduce the of
an optical signal. - CORRECT ANSWER -power level
Fusion splices are most likely used in the middle of a fiber run. - CORRECT ANSWER -
long
, A light source and power meter are connected together with two MQJ's. The reference power o
n the power meter is -
15.3dBm. A 200Rmeter cable is inserted between the MQJ's and the measured power on the me
ter now reads -17.5dBm. the loss would be ________ . - CORRECT ANSWER -2.2
There are individual fiber, unit, and group identification color codes recognized by th
e Optical Fiber Cable Code standard TIA-598.
a) 24
b) 36
c) 48
d) 144 - CORRECT ANSWER -b) 36
is the proper name for the modulation scheme used to convert analog sig
nals to a digital format. - CORRECT ANSWER -Pulse coded modulation
Return reflection or return loss can be reduced by the connector endface wit
h a PC finish.
a) Squaring
b) Rounding
c) Flattening
d) Beveling - CORRECT ANSWER -b) Rounding
For light to propagate down the fiber core, it must enter through the which is d
efined by the . - CORRECT ANSWER -cone of acceptance
NA - light gathering ability of the fiber
