ncti mt2 mt3 | 70 actual questions and answers 100 verified answers
ncti
in what applications is a splice closure used
when preparing a fiber optic cable for splicing
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NCTI MT2 - MT3 | 70 Actual Questions
and Answers (100% Verified Answers)
In what applications is a splice closure used? - Answer Splice
closures are used to protect optical fibers and splices against a full
range of environmental changes in aerial installations or below ground
in vaults.
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? - 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? - 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? - 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? - 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? - 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? - Answer Retaining
clips hold optical splices in place in a splice tray.
What is the purpose of buffer tubes in fiber-optic cable? - 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? - 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? - 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? -
Answer The fixed V-groove splicer.
What are some prerequisites before performing a fusion splice of
optical fibers? - 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? -
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? -
Answer A mechanical splice used for acceptance testing should be
simple to use and reusable.
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