NCTI 2 TO 3 LATEST STUDY GUIDE EXAM
QUESTIONS WITH SOLUTIONS 2026/2027 LATEST
UPDATE
What is unique about WDM-PON? - ✔✔✔ANSWER>>>>WDM-PON
deployed in a greenfield system allows each subscriber to get their own
designated wavelength.
What is the purpose of the SDU? - ✔✔✔ANSWER>>>>It provides surge
protection, a test jack, circuit protection, wiring management, and fiber
termination.
What are the advantages of loose buffer tube fiber? - ✔✔✔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? - ✔✔✔ANSWER>>>>It is a device that converts light
from fiber to Rf for coaxial distribution into home.
Page | 1
,What are the characteristics of ITU-T G.657 BIF? - ✔✔✔ANSWER>>>>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? - ✔✔✔ANSWER>>>>It is faster and more reliable
than installing connectors in the field.
What is the proper way to handle fiber once it is spliced? -
✔✔✔ANSWER>>>>At the heat-shrink protective sleeve that has a steel bar
inside it.
What is the purpose of the ground block? - ✔✔✔ANSWER>>>>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? - ✔✔✔ANSWER>>>>FDH.
What is the difference between the FTTN and FTTC topologies? - CORRECT
ANSWER>>>>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? - ✔✔✔ANSWER>>>>Truck, branch, and
drop
Page | 2
, 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? -
✔✔✔ANSWER>>>>Home- run
Which PON element uses patch panels? - ✔✔✔ANSWER>>>>ODN
What is the one main function of the FDH? - ✔✔✔ANSWER>>>>The FDH
provides effective fiber management by grouping splitters into local serving
areas.
What is the purpose of the MST? - ✔✔✔ANSWER>>>>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? - ✔✔✔ANSWER>>>>It
provides a safe place to splice, split, distribute, store, and cross-connect fiber
optics.
How are optical splitters used in the forward path? - ✔✔✔ANSWER>>>>As
passive branching devices that divide an optical signal across multiple output
fibers.
What is the main benefit of deploying WDM technology? -
✔✔✔ANSWER>>>>It will increase the capacity of the existing fiber networks
tenfold without adding any more fiber.
What parameter is critical in an OTDR when testing a PON with significant
splitters losses? -
✔✔✔ANSWER>>>>High dynamic range.
Page | 3
QUESTIONS WITH SOLUTIONS 2026/2027 LATEST
UPDATE
What is unique about WDM-PON? - ✔✔✔ANSWER>>>>WDM-PON
deployed in a greenfield system allows each subscriber to get their own
designated wavelength.
What is the purpose of the SDU? - ✔✔✔ANSWER>>>>It provides surge
protection, a test jack, circuit protection, wiring management, and fiber
termination.
What are the advantages of loose buffer tube fiber? - ✔✔✔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? - ✔✔✔ANSWER>>>>It is a device that converts light
from fiber to Rf for coaxial distribution into home.
Page | 1
,What are the characteristics of ITU-T G.657 BIF? - ✔✔✔ANSWER>>>>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? - ✔✔✔ANSWER>>>>It is faster and more reliable
than installing connectors in the field.
What is the proper way to handle fiber once it is spliced? -
✔✔✔ANSWER>>>>At the heat-shrink protective sleeve that has a steel bar
inside it.
What is the purpose of the ground block? - ✔✔✔ANSWER>>>>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? - ✔✔✔ANSWER>>>>FDH.
What is the difference between the FTTN and FTTC topologies? - CORRECT
ANSWER>>>>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? - ✔✔✔ANSWER>>>>Truck, branch, and
drop
Page | 2
, 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? -
✔✔✔ANSWER>>>>Home- run
Which PON element uses patch panels? - ✔✔✔ANSWER>>>>ODN
What is the one main function of the FDH? - ✔✔✔ANSWER>>>>The FDH
provides effective fiber management by grouping splitters into local serving
areas.
What is the purpose of the MST? - ✔✔✔ANSWER>>>>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? - ✔✔✔ANSWER>>>>It
provides a safe place to splice, split, distribute, store, and cross-connect fiber
optics.
How are optical splitters used in the forward path? - ✔✔✔ANSWER>>>>As
passive branching devices that divide an optical signal across multiple output
fibers.
What is the main benefit of deploying WDM technology? -
✔✔✔ANSWER>>>>It will increase the capacity of the existing fiber networks
tenfold without adding any more fiber.
What parameter is critical in an OTDR when testing a PON with significant
splitters losses? -
✔✔✔ANSWER>>>>High dynamic range.
Page | 3
