Fiber Testing and Maintenance EXAM || MOST
RECENT EXAM ACTUAL COMPLETE REAL VERIFIED
EXAM QUESTIONS AND CORRECT ANSWERS
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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.
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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 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.
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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 the physical document must become
the responsibility of an identifiable position or organization.
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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.
When a laser light source is used to test fibers, - Answer-A
2 kHz modulation provides a test signal that allows the
fiber under test to be detected by an optical fiber identifier.