Field tech 2-3 Final Exam Study Questions with Complete Solutions What is unique about WDM - PON ? - Correct Answer WDM-PON deployed in a greenfield system allows each subscriber to get their own designated wavelength.What is the main benefit of deploying WDM technology? - Correct Answer It will increase the capacity of the existing fiber networks tenfold without adding any more fiber.How are optical splitters used in the forward path? - Correct Answer As passive branching devices that divide an optical signal across multiple output fibers.What is the purpose of a fiber demarcation box? - Correct Answer It provides a safe place to splice, split, distribute, store, and cross-connect fiber optics.What is the purpose of the MST? - Correct Answer It provides access to connect fiber-optic cable drops from the customer premises to the network.What is the one main function of the FDH? - Correct Answer The FDH provides effective fiber management by grouping splitters into local serving areas Which PON element uses patch panels? - Correct Answer ODN 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? - Correct Answer Home-Run What are the three categories of the fiber-optic cable used to identify the location of the fiber in the network? - Correct Answer Trunk, branch, and drop.What is the difference between the FTTN and FTTC 1 / 3
topologies? - Correct Answer An FTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises.What is the purpose of the SDU? - Correct Answer It provides surge protection, a test jack, circuit protection, wiring management, and fiber termination.What are the advantages of loose buffer tube fiber? - Correct Answer It offers the best protection for the fibers under high pulling tension and moisture with its fiber-coated gel.What is an ONU/ONT? - Correct Answer It is a device that converts light from fiber to RF for coaxial distribution into the home.What are the characteristics of ITU-T G.657 BIF? - Correct Answer It is flexible for installation in small spaces and has a small bend radius of 7.5 mm or 10 mm.What le true about using a premade fiber-optic pigtail for splicing to patch panels or terminal equipment? - Correct Answer It is faster and more rellable than installing eonnectors in the field.What is the proper way to handle fiber once it is spliced? - Correct Answer At the heat-shrink protective sleeve that has a steel bar inside it.What is the purpose of the ground block? - Correct Answer To protect fragile electronics like TV's and STBs from damaging lightning strikes and power surges.In a PON FTTx network, which OSP device contains fiber test points that will minimize service disruption to customers? - Correct Answer FDH (Fiber Distribution Hub) What parameter is critical in an OTDR when testing a PON with 2 / 3
significant splitters losses? - Correct Answer High Dynamic Range What is the best approach to repairing an aerial fiber-optic drop cable for FTTx applications? - Correct Answer Replace the entire section of fiber drop cable.(-25) + (42) + (-62) + (20) =? - Correct Answer -25 (17) x (-19) =? - Correct Answer -323 -17-(-34)=？ - Correct Answer 17 -49 ÷ -7? - Correct Answer 7 (20) ÷ (-4) + (-2) x (-10) - (-2) x (7) =? - Correct Answer 29
- 6/9 + 6 1/3 + 9 5/9= - Correct Answer 19 5/9
- 3/8 ÷7 1/4= - Correct Answer 1. 1/58
- / 3
8.13 X 0.123 =? - Correct Answer 0.99999 0.5349 ÷ 0.1420? - Correct Answer 3.7669014 67.84 + 81.786 + 4281.98 = ? - Correct Answer 4,431.606 0.00004= ——- × 10 to the power of ——? - Correct Answer 4,-5 What is the square of 7? - Correct Answer 49