NCTI EXAMPREP STUDY PAPER WITH
VERIFIED SOLUTIONS AND GUARANTEED
PASS CONCEPTS
• What is the difference between the FTTN and FTTC topologies?
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
• 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 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.
,• 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 parameter is critical in an OTDR when testing a PON with
significant splitters losses? Answer: High dynamic range.
• What is the best approach to repairing an aerial fiber-optic drop cable
for FTTx applications? Answer: Replace the entire section of fiber drop
cable.
• (-25) + (42) + (-62) + (20)=? Answer: -25
, • (17) X (-19)=? Answer: -323
• (-17) - (-34)=? Answer: 17
• -49 ÷ -7 =? Answer: 7
• (20) ÷ (-4) + (-2) x (-10) - (-2) x (7)=? Answer: 29
• 3 6/9 + 6 1/3 + 9 5/9=? Answer: 19 5/9
• 7 3/8 ÷ 7 1/4=? Answer: 1 1/58
• 8.13 x 0.123 =? Answer: 0.99999
• 0.5349 ÷ 0.1420 Answer: 3.7669014
• 67.84 + 81.786 + 4281.98 =? Answer: 4431.606
• Which of the statements is true of axioms? Answer: 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=? Answer: E/R
VERIFIED SOLUTIONS AND GUARANTEED
PASS CONCEPTS
• What is the difference between the FTTN and FTTC topologies?
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
• 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 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.
,• 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 parameter is critical in an OTDR when testing a PON with
significant splitters losses? Answer: High dynamic range.
• What is the best approach to repairing an aerial fiber-optic drop cable
for FTTx applications? Answer: Replace the entire section of fiber drop
cable.
• (-25) + (42) + (-62) + (20)=? Answer: -25
, • (17) X (-19)=? Answer: -323
• (-17) - (-34)=? Answer: 17
• -49 ÷ -7 =? Answer: 7
• (20) ÷ (-4) + (-2) x (-10) - (-2) x (7)=? Answer: 29
• 3 6/9 + 6 1/3 + 9 5/9=? Answer: 19 5/9
• 7 3/8 ÷ 7 1/4=? Answer: 1 1/58
• 8.13 x 0.123 =? Answer: 0.99999
• 0.5349 ÷ 0.1420 Answer: 3.7669014
• 67.84 + 81.786 + 4281.98 =? Answer: 4431.606
• Which of the statements is true of axioms? Answer: 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=? Answer: E/R
