FTTx Basics, NCTI FTTx Basics
Conventional Exam Review UPDATED
ACTUAL Exam Questions and CORRECT
Answers
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 fiber-optic cable used to identify the location of the fiber in the
network? - CORRECT ANSWER - Trunk, branch, and drop
Which PON element uses patch panels ? - CORRECT ANSWER - ODN
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 purpose of a fiber demarcation box? - CORRECT 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? - CORRECT ANSWER - As passive
branching devices that divide an optical signal across multiple output fibers.
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
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 best approach to repairing an aerial fiber-optic drop cable for FTTx applications? -
CORRECT ANSWER - Replace the entire section of fiber drop cable.
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 some of 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 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 10mm.
What is true about using premade fiber-optic pigtail for splicing to patch panels or terminal
equipment? - CORRECT 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? - CORRECT ANSWER - At the
heat-shrink protective sleeve that has a steel bar inside it.
What is the purpose of a ground block? - CORRECT ANSWER - To protect fragile
electronics like Tvs and STBs from damaging lightning strikes and power surges.
In a PON FTTx network, which OSP device contains fiber test points that minimize service
disruption to customers? - CORRECT ANSWER - FDH.
What parameter is critical in an OTDR when testing a PON with significant splitter losses? -
CORRECT ANSWER - High dynamic range.
Conventional Exam Review UPDATED
ACTUAL Exam Questions and CORRECT
Answers
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 fiber-optic cable used to identify the location of the fiber in the
network? - CORRECT ANSWER - Trunk, branch, and drop
Which PON element uses patch panels ? - CORRECT ANSWER - ODN
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 purpose of a fiber demarcation box? - CORRECT 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? - CORRECT ANSWER - As passive
branching devices that divide an optical signal across multiple output fibers.
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
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 best approach to repairing an aerial fiber-optic drop cable for FTTx applications? -
CORRECT ANSWER - Replace the entire section of fiber drop cable.
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 some of 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 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 10mm.
What is true about using premade fiber-optic pigtail for splicing to patch panels or terminal
equipment? - CORRECT 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? - CORRECT ANSWER - At the
heat-shrink protective sleeve that has a steel bar inside it.
What is the purpose of a ground block? - CORRECT ANSWER - To protect fragile
electronics like Tvs and STBs from damaging lightning strikes and power surges.
In a PON FTTx network, which OSP device contains fiber test points that minimize service
disruption to customers? - CORRECT ANSWER - FDH.
What parameter is critical in an OTDR when testing a PON with significant splitter losses? -
CORRECT ANSWER - High dynamic range.
