NCTI-FTTX BASICS Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
What is one reason why Changing the infrastructure all at once
broadband would
cable operators install fiber-optic cause too many service disruptions
cable in stages instead of
changing
the infrastructure all at once?
What is the difference between the An FTTC is allowed a smaller number of
fiber-to-the-node (FTTN) and fiber- RF
to-the-curb (FTTC) topologies? amplifiers between the optical fiber and the
customer premises.
Which of these components is Optical splitters
used
in a passive optical network
(PON)?
Which type of star topology used Distributed star
in
a passive optical network (PON)
places the PON splitters into fiber
access terminal (FAT) located
deep
in the network and closer to the
customer premises than the
centralized split?
,Which element of a passive optical Optical distribution network (ODN)
network (PON) uses a Bragg
grating
filter?
What is it about radio frequency RFoG can operate in parallel with GPON
over or EPON,
glass (RFoG) that made which eliminates the need for any
broadband downtime during
cable operators envision using it to the transition
make a seamless transition from
the
legacy hybrid fiber/coax (HFC)
architecture over to a gigabit-
capable passive optical network
(GPON) or Ethernet passive
optical
network (EPON)?
How are optical splitters used in In the forward path, optical splitters are
the used as
forward path? passive branching devices that divide an
optical
signal across multiple output fibers.
Which of the following describes a Fiber-optic cable with pre-connectorized
fiber pigtail? ends.
Heat shrink tubing is installed over Before stripping the plastic coating from
the fusion-splice to strengthen and the fiber.
protect it. When should the heat
shrink be installed on the fiber?
, Which Data over Cable Service The DOCSIS Media Access Control (MAC)
Interface Specification (DOCSIS) Layer.
layer is used by the cable modem
termination system (CMTS) to
differentiate between cable
modems?
What was introduced in Data Over The option to increase the top frequency of
Cable Service Interface the
Specification (DOCSIS) 3.0 to upstream to 85 MHz
allow
enough bandwidth for upstream
carriers from previous DOCSIS
versions?
In a Data Over Cable Service Compared to the downstream path, the
Interface Specification (DOCSIS) narrower
network, why is the data bandwidths and lower orders of modulation
throughput used
over the return or upstream path to transport data over the return path
typically less than the throughput cause the
of downstream and upstream data
data over the forward or throughput to be
downstream path? unequal or asymmetrical.
What would be the downstream 76 Mbps
throughput if two quadrature
amplitude modulation (QAM)
channels with a throughput of 38
megabits per second (Mbps) were
bonded?
Answers with Verified Solutions | Latest
Updated 2026
What is one reason why Changing the infrastructure all at once
broadband would
cable operators install fiber-optic cause too many service disruptions
cable in stages instead of
changing
the infrastructure all at once?
What is the difference between the An FTTC is allowed a smaller number of
fiber-to-the-node (FTTN) and fiber- RF
to-the-curb (FTTC) topologies? amplifiers between the optical fiber and the
customer premises.
Which of these components is Optical splitters
used
in a passive optical network
(PON)?
Which type of star topology used Distributed star
in
a passive optical network (PON)
places the PON splitters into fiber
access terminal (FAT) located
deep
in the network and closer to the
customer premises than the
centralized split?
,Which element of a passive optical Optical distribution network (ODN)
network (PON) uses a Bragg
grating
filter?
What is it about radio frequency RFoG can operate in parallel with GPON
over or EPON,
glass (RFoG) that made which eliminates the need for any
broadband downtime during
cable operators envision using it to the transition
make a seamless transition from
the
legacy hybrid fiber/coax (HFC)
architecture over to a gigabit-
capable passive optical network
(GPON) or Ethernet passive
optical
network (EPON)?
How are optical splitters used in In the forward path, optical splitters are
the used as
forward path? passive branching devices that divide an
optical
signal across multiple output fibers.
Which of the following describes a Fiber-optic cable with pre-connectorized
fiber pigtail? ends.
Heat shrink tubing is installed over Before stripping the plastic coating from
the fusion-splice to strengthen and the fiber.
protect it. When should the heat
shrink be installed on the fiber?
, Which Data over Cable Service The DOCSIS Media Access Control (MAC)
Interface Specification (DOCSIS) Layer.
layer is used by the cable modem
termination system (CMTS) to
differentiate between cable
modems?
What was introduced in Data Over The option to increase the top frequency of
Cable Service Interface the
Specification (DOCSIS) 3.0 to upstream to 85 MHz
allow
enough bandwidth for upstream
carriers from previous DOCSIS
versions?
In a Data Over Cable Service Compared to the downstream path, the
Interface Specification (DOCSIS) narrower
network, why is the data bandwidths and lower orders of modulation
throughput used
over the return or upstream path to transport data over the return path
typically less than the throughput cause the
of downstream and upstream data
data over the forward or throughput to be
downstream path? unequal or asymmetrical.
What would be the downstream 76 Mbps
throughput if two quadrature
amplitude modulation (QAM)
channels with a throughput of 38
megabits per second (Mbps) were
bonded?
