NCTI 2-3 Questions and Answers 100% Pass What is the difference between the FTTN and FTTC topologies? An FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises.
What are the three categories of the fiber-optic cable used to identify the location of th...
what is the difference between the fttn and fttc topologies an fttc is allowed a smaller number of rf amplifiers between the optical fiber and the customer pr
NCTI 2-3 Questions and Answers 100% Pass What is the difference between the FTTN and FTTC topologies? ✔✔An FTTC is allowed a smaller number of RF amplif iers between the optical fiber and the customer premises. What are the three categories of the fiber -optic cable used to identify the location of the fiber in the network? ✔✔Truck, branch, and drop Which type of fiber topology used in a PON places the PON splitters at the headend while providing one designated fiber for every customer premise? ✔✔Home -run Which PON element uses patch panels? ✔✔ODN What is the one main function of the FDH? ✔✔The FDH provides effective fiber management by grouping splitters into local serving areas. What is the purpose of the MST? ✔✔It provides access to connect fiber -optic cable drops from the customer premises to the network. What is the purpose of a fiber demarcat ion box? ✔✔It provides a safe place to splice, split, distribute, store, and cross -connect fiber optics. How are optical splitters used in the forward path? ✔✔As passive branching devices that divide an optical signal across multiple output fibers. What is the main benefit of deploying WDM technology? ✔✔It will increase the capacity of the existing fiber networks tenfold without adding any more fiber. What is unique about WDM -PON? ✔✔WDM -PON deployed in a greenfield system allows each subscriber to get th eir own designated wavelength. What is the purpose of the SDU? ✔✔It provides surge protection, a test jack, circuit protection, wiring management, and fiber termination. What are the advantages of loose buffer tube fiber? ✔✔It offers the best protection for the fibers under high pulling tension and moisture with its fiber -coated gel. What is an ONU/ONT? ✔✔It is a device that converts light from fiber to Rf for coaxial distribution into home. What are the characteristics of ITU -T G.657 BIF? ✔✔It is flexi ble for installation in small spaces and has a small bend radius of 7.5 mm or 10mm. What is true about using a premed fiber -optic pigtail for splicing to patch panels or terminal equipment? ✔✔It is faster and more reliable than installing connectors in th e field. What is the proper way to handle fiber once it is spliced? ✔✔At the heat -shrink protective sleeve that has a steel bar inside it. What is the purpose of the ground block? ✔✔To protect fragile electronics like Tvs and STBs from damaging lightning strikes and power surges. In a PON FTTx networks, which OSP device contains fiber test points that will minimize service disruption to customers? ✔✔FDH. What parameter is critical in an OTDR when testing a PON with significant splitters losses? ✔✔High dynamic range. What is the best approach to repairing an aerial fiber -optic drop cable for FTTx applications? ✔✔Replace the entire section of fiber drop cab le. (-25) + (42) + ( -62) + (20)=? ✔✔-25 (17) X ( -19)=? ✔✔-323 (-17) - (-34)=? ✔✔17 -49 ÷ -7 =? ✔✔7 (20) ÷ ( -4) + ( -2) x ( -10) - (-2) x (7)=? ✔✔29 3 6/9 + 6 1/3 + 9 5/9=? ✔✔19 5/9
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