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 1 / 2
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 -
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