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Fiber Testing and Maintenance EXAM Questions with
100% Correct Answers | Verified || ACTUAL EXAM 2026
TEST!! Graded A+ | 2026 EXAM UPDATE
What topology do most fiber-to-the-user (FTTx) networks use which
requires greater fiber color code management in its documentation?
......ANSWER......Point to multipoint (P2MP).
Improper use of nylon tie wraps can induce this problem:
......ANSWER......Microbends.
What are potential sources of problems in aerial installations?
......ANSWER......Falling branches, pole attachment problems, and
improper sag and loading considerations.
During installation of fiber-optic cable, what does damage to the cable
jacket cause? ......ANSWER......Moisture migration into the cable.
In a fiber-optic network, ......ANSWER......The role of maintenance is to
proactively maintain network tolerances and recognize, locate, and
remedy potential problems.
A fiber-optic network maintenance plan should be developed with
which of the following in mind? ......ANSWER......The task of compiling
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the physical document must become the responsibility of an
identifiable position or organization.
What is the best way to prevent problems in outside fiber-optic splice
enclosures? ......ANSWER......The outer jacket and the internal cable
structures must be secured individually to protect the closure and splice
trays from the effects of expansion and contraction.
The troubleshooting process ......ANSWER......Should include steps that
identify, analyze, and locate the problem as well as diagnose its source,
repair the problem, and test to ensure the problem is resolved.
When testing the fiber-optic plant, ......ANSWER......An optical power
meter is used to measure the strength of light signals anywhere in a
fiber system where a connection can be made.
As changes are introduced to a fiber-optic network,
......ANSWER......Documentation must be updated to reflect the new
configuration and performance data.
Besides RS-232 ports, what type of interface is common on an optical
power meter? ......ANSWER......A USB interface can provide easy
download of information to a PC.
Optical power meters used for testing fiber-to-the-user (FTTx)
installations operating downstream from the headend should be
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calibrated for which wavelengths? ......ANSWER......1,490 nm, 1,550 nm,
and 1,577 nm.
A wavelength-isolating power meter is most commonly used in
......ANSWER......Point-to-multipoint FTTx installations.
Optical loss test sets perform multiple functions because they include
the features of multiple pieces of test sets. The features of which other
test sets are combined into an optical loss test set? ......ANSWER......A
stabilized light source, an optical return loss meter, an enhanced optical
power meter, and an optical talk set.
Regarding various optical power meter types, ......ANSWER......Enhanced
power meters evolved for roles where measurements need to be easily
stored, recalled, transmitted, and downloaded.
When measuring transmit and receive power with an optical power
meter, ......ANSWER......The meter's calibration must be traceable to the
National Institute of Standards Technology (NIST).
When measuring end-to-end attenuation, ......ANSWER......The light
source and optical power meter must be referenced together prior to
making any field measurement.
A light source ......ANSWER......Is crucial for accurately measuring optical
fiber power and attenuation.
pg. 3
Fiber Testing and Maintenance EXAM Questions with
100% Correct Answers | Verified || ACTUAL EXAM 2026
TEST!! Graded A+ | 2026 EXAM UPDATE
What topology do most fiber-to-the-user (FTTx) networks use which
requires greater fiber color code management in its documentation?
......ANSWER......Point to multipoint (P2MP).
Improper use of nylon tie wraps can induce this problem:
......ANSWER......Microbends.
What are potential sources of problems in aerial installations?
......ANSWER......Falling branches, pole attachment problems, and
improper sag and loading considerations.
During installation of fiber-optic cable, what does damage to the cable
jacket cause? ......ANSWER......Moisture migration into the cable.
In a fiber-optic network, ......ANSWER......The role of maintenance is to
proactively maintain network tolerances and recognize, locate, and
remedy potential problems.
A fiber-optic network maintenance plan should be developed with
which of the following in mind? ......ANSWER......The task of compiling
pg. 1
,2|Page
the physical document must become the responsibility of an
identifiable position or organization.
What is the best way to prevent problems in outside fiber-optic splice
enclosures? ......ANSWER......The outer jacket and the internal cable
structures must be secured individually to protect the closure and splice
trays from the effects of expansion and contraction.
The troubleshooting process ......ANSWER......Should include steps that
identify, analyze, and locate the problem as well as diagnose its source,
repair the problem, and test to ensure the problem is resolved.
When testing the fiber-optic plant, ......ANSWER......An optical power
meter is used to measure the strength of light signals anywhere in a
fiber system where a connection can be made.
As changes are introduced to a fiber-optic network,
......ANSWER......Documentation must be updated to reflect the new
configuration and performance data.
Besides RS-232 ports, what type of interface is common on an optical
power meter? ......ANSWER......A USB interface can provide easy
download of information to a PC.
Optical power meters used for testing fiber-to-the-user (FTTx)
installations operating downstream from the headend should be
pg. 2
, 3|Page
calibrated for which wavelengths? ......ANSWER......1,490 nm, 1,550 nm,
and 1,577 nm.
A wavelength-isolating power meter is most commonly used in
......ANSWER......Point-to-multipoint FTTx installations.
Optical loss test sets perform multiple functions because they include
the features of multiple pieces of test sets. The features of which other
test sets are combined into an optical loss test set? ......ANSWER......A
stabilized light source, an optical return loss meter, an enhanced optical
power meter, and an optical talk set.
Regarding various optical power meter types, ......ANSWER......Enhanced
power meters evolved for roles where measurements need to be easily
stored, recalled, transmitted, and downloaded.
When measuring transmit and receive power with an optical power
meter, ......ANSWER......The meter's calibration must be traceable to the
National Institute of Standards Technology (NIST).
When measuring end-to-end attenuation, ......ANSWER......The light
source and optical power meter must be referenced together prior to
making any field measurement.
A light source ......ANSWER......Is crucial for accurately measuring optical
fiber power and attenuation.
pg. 3
