Construction Coordinator 3 NCTI - Questions With
Correct Solutions
When preparing a fiber-optic cable for splicing, what is the purpose of
removing approximately 2.5 cm (1 inch) of jacket and any armor that is
present, from the end of the cable? Correct Answer - To access the cable's
rip cord and to check the cutting depth of the knife or ringing tool.
What does water do to the glass core of an optical fiber? Correct Answer -
Water causes the glass core of the optical fiber to become opaque, which
degrades the signal as it's transported through the fiber.
When preparing a splice closure, what should be done with the fiberglass rod
strength member that runs down the center of loose-tube fiber-optic cable?
Correct Answer - Trim the strength member back for convenience, but leave
it long enough to be tightly clamped to a strain-relief lug in the closure.
What is the purpose of splice trays inside splice closures? Correct Answer -
Splice trays are designed to provide protection for mechanical splices, fusion
splice protectors, and optical splitters as well as provide storage for the
required fiber slack.
How should the buffer tubes be secured in the closure? Correct Answer -
The buffer tubes should be secured with tie wraps to allow slight movement
without pulling or stressing the optical fibers.
How are optical splices secured in a splice tray? Correct Answer - Cable
(retaining) clips hold optical splices in place in a splice tray.
What is the purpose of buffer tubes in fiber-optic cable? Correct Answer -
Buffer tubes protect and separate the optical fiber in smaller bundles.
When splicing fiber-optic cable, why is it a good safety practice to clean off
fiber strippers and other hand tools after each use? Correct Answer - To
prevent the accidental transfer of fiber debris or fiber chips onto clean hands.
Where would you expect to install a mid-entry splice in a fiber-optic cable
network? Correct Answer - A location where a select number of optical
, fibers need to be spliced, and the remaining buffer tubes and fibers remain
untouched.
Which type of fusion splicer is ideal for fiber-to-the-x (FTTx) splicing?
Correct Answer - The fixed V-groove splicer.
What are some prerequisites before performing a fusion splice of optical
fibers? Correct Answer - A controlled environment such as a splicing van,
trailer, or tent and a stable work surface that is large enough to accommodate
the fusion splicer, tools, and the splice closure.
When would a mid-entry splice in a fiber-optic network be used? Correct
Answer - In a self-healing ring network that requires only two fibers to feed
an optical fiber drop.
What is required of mechanical splices used for acceptance testing? Correct
Answer - A mechanical splice used for acceptance testing should be simple to
use and reusable.
Why are Velcro straps preferred over standard plastic tie wraps when
bundling pigtails for storage in a splice panel? Correct Answer - Because
Velcro straps are removable and can hold the pigtails together without placing
undue strain on the optical fibers.
When preparing fiber-optic cable for connection to a patch panel, how much
buffer tube and fiber slack should be provided? Correct Answer - Leave
enough slack in the buffer tubes to allow the splice trays to reach the splicing
equipment and enough fiber slack to store on individual trays for later
additions, moves, and changes.
If tight-buffered distribution fiber-optic cable is installed between the master
splice panel in an optical entrance enclosure (OEE) and a rack-mounted fiber-
optic distribution panel, where in the facility must the distribution panel be
located? Correct Answer - The distribution panel can be located anywhere
in the facility since the distribution cable complies with indoor code
requirements for riser or plenum installations.
The quality and attenuation value of a mechanical splice of optical fibers is
dependent on which tool during the preparation process? Correct Answer -
Correct Solutions
When preparing a fiber-optic cable for splicing, what is the purpose of
removing approximately 2.5 cm (1 inch) of jacket and any armor that is
present, from the end of the cable? Correct Answer - To access the cable's
rip cord and to check the cutting depth of the knife or ringing tool.
What does water do to the glass core of an optical fiber? Correct Answer -
Water causes the glass core of the optical fiber to become opaque, which
degrades the signal as it's transported through the fiber.
When preparing a splice closure, what should be done with the fiberglass rod
strength member that runs down the center of loose-tube fiber-optic cable?
Correct Answer - Trim the strength member back for convenience, but leave
it long enough to be tightly clamped to a strain-relief lug in the closure.
What is the purpose of splice trays inside splice closures? Correct Answer -
Splice trays are designed to provide protection for mechanical splices, fusion
splice protectors, and optical splitters as well as provide storage for the
required fiber slack.
How should the buffer tubes be secured in the closure? Correct Answer -
The buffer tubes should be secured with tie wraps to allow slight movement
without pulling or stressing the optical fibers.
How are optical splices secured in a splice tray? Correct Answer - Cable
(retaining) clips hold optical splices in place in a splice tray.
What is the purpose of buffer tubes in fiber-optic cable? Correct Answer -
Buffer tubes protect and separate the optical fiber in smaller bundles.
When splicing fiber-optic cable, why is it a good safety practice to clean off
fiber strippers and other hand tools after each use? Correct Answer - To
prevent the accidental transfer of fiber debris or fiber chips onto clean hands.
Where would you expect to install a mid-entry splice in a fiber-optic cable
network? Correct Answer - A location where a select number of optical
, fibers need to be spliced, and the remaining buffer tubes and fibers remain
untouched.
Which type of fusion splicer is ideal for fiber-to-the-x (FTTx) splicing?
Correct Answer - The fixed V-groove splicer.
What are some prerequisites before performing a fusion splice of optical
fibers? Correct Answer - A controlled environment such as a splicing van,
trailer, or tent and a stable work surface that is large enough to accommodate
the fusion splicer, tools, and the splice closure.
When would a mid-entry splice in a fiber-optic network be used? Correct
Answer - In a self-healing ring network that requires only two fibers to feed
an optical fiber drop.
What is required of mechanical splices used for acceptance testing? Correct
Answer - A mechanical splice used for acceptance testing should be simple to
use and reusable.
Why are Velcro straps preferred over standard plastic tie wraps when
bundling pigtails for storage in a splice panel? Correct Answer - Because
Velcro straps are removable and can hold the pigtails together without placing
undue strain on the optical fibers.
When preparing fiber-optic cable for connection to a patch panel, how much
buffer tube and fiber slack should be provided? Correct Answer - Leave
enough slack in the buffer tubes to allow the splice trays to reach the splicing
equipment and enough fiber slack to store on individual trays for later
additions, moves, and changes.
If tight-buffered distribution fiber-optic cable is installed between the master
splice panel in an optical entrance enclosure (OEE) and a rack-mounted fiber-
optic distribution panel, where in the facility must the distribution panel be
located? Correct Answer - The distribution panel can be located anywhere
in the facility since the distribution cable complies with indoor code
requirements for riser or plenum installations.
The quality and attenuation value of a mechanical splice of optical fibers is
dependent on which tool during the preparation process? Correct Answer -
