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 the fiber in
the network? - Truck, bran...
NCTI 2-3 Questions & Answers
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 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 demarcation 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 their 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 flexible 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 the 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 cable.
(-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
7 3/8 ÷ 7 1/4=? - ✔✔1 1/58
8.13 x 0.123 =? - ✔✔0.99999
0.5349 ÷ 0.1420 - ✔✔3.7669014
67.84 + 81.786 + 4281.98 =? - ✔✔4431.606
Which of the statements is true of axioms? - ✔✔When A=C and B=C, then A=B because both
are equal to C, which supports the axiom: Quantities equal to the same quantity are equal to each
other.
Simplify and solve the equation: if E=IR, then I=? - ✔✔E/R
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