NCTI MTIII Exam Questions And Answers
The number of rectifiers used in DC power plant design -
correct answer ✅Is dependent upon the load place on the system.
What is true of online uninterruptible power supply (UPS) system? -
correct answer ✅They are recommended for commercial
applications such as data centers and telecommunications
operations.
Which of these are concerns for radio frequency over grass (RFoG)
and, fiber-to-the-x (FTTx) -
correct answer ✅Consideration of how and who will provide AC
power to the optical network terminal (ONT) at the customer
premises.
What is true of the following types of uninterruptible power
supplies (UPS)? -
correct answer ✅The offline type routes incoming power directly
to connected devices and switches to battery backup during a
power interruption.
Why are backup AC generators included in many commercial AC
uninterruptible power supply (UPS) and DC power systems? -
correct answer ✅To provide AC power in the event of a prolonged
utility power interruption.
, NCTI MTIII Exam Questions And Answers
Why is -48 VDC ( volts of direct current ) whit a positive ground
used by the telecommunications industry ? -
correct answer ✅This reverse polarity is a means of mitigating
electrolytic corrosion on the outside plant.
Which of the following is true of a centralized power node ? -
correct answer ✅It can provide sufficient power for a fiber-optic
node, including plant amplifiers and customer premises network
interface devices ( NID) for telephony services.
What is an option available on most optical nodes for connecting to
the power supply? -
correct answer ✅Through a power cable that is connected from
the power supply directly to the power port of the node.
Why do many optical nodes accept two independent power
supplies? -
correct answer ✅For redundant powering of the node.
In a hybrid fiber/coax (HFC) fiber optic node, what are common
voltages produced by DC power supplies? -
correct answer ✅Common voltage produced by DC power supplies
include +5, +12, and +24 VDC.
The number of rectifiers used in DC power plant design -
correct answer ✅Is dependent upon the load place on the system.
What is true of online uninterruptible power supply (UPS) system? -
correct answer ✅They are recommended for commercial
applications such as data centers and telecommunications
operations.
Which of these are concerns for radio frequency over grass (RFoG)
and, fiber-to-the-x (FTTx) -
correct answer ✅Consideration of how and who will provide AC
power to the optical network terminal (ONT) at the customer
premises.
What is true of the following types of uninterruptible power
supplies (UPS)? -
correct answer ✅The offline type routes incoming power directly
to connected devices and switches to battery backup during a
power interruption.
Why are backup AC generators included in many commercial AC
uninterruptible power supply (UPS) and DC power systems? -
correct answer ✅To provide AC power in the event of a prolonged
utility power interruption.
, NCTI MTIII Exam Questions And Answers
Why is -48 VDC ( volts of direct current ) whit a positive ground
used by the telecommunications industry ? -
correct answer ✅This reverse polarity is a means of mitigating
electrolytic corrosion on the outside plant.
Which of the following is true of a centralized power node ? -
correct answer ✅It can provide sufficient power for a fiber-optic
node, including plant amplifiers and customer premises network
interface devices ( NID) for telephony services.
What is an option available on most optical nodes for connecting to
the power supply? -
correct answer ✅Through a power cable that is connected from
the power supply directly to the power port of the node.
Why do many optical nodes accept two independent power
supplies? -
correct answer ✅For redundant powering of the node.
In a hybrid fiber/coax (HFC) fiber optic node, what are common
voltages produced by DC power supplies? -
correct answer ✅Common voltage produced by DC power supplies
include +5, +12, and +24 VDC.
