NCTI Progression Field Tech 2- 3
,What uses the 2.4-GHz band and runs at 54 Mbps? - Answer 802.11g
What is one reason why broadband cable operators install fiber-optic cable in stages instead of changing the
infrastructure all at once? - Answer Changing the infrastructure all at once would cause too many service
disruptions.
What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-curb (FTTC) topologies? - Answer An
FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises.
Which of these components is used in a passive optical network (PON)? - Answer Optical splitters.
Which type of star topology used 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? -
Answer Distributed star.
Which element of a passive optical network (PON) uses a Bragg grating filter? - Answer Optical line terminal (OLT).
Which element of a passive optical network (PON) uses patch panels? - Answer Optical distribution network (ODN).
What is it about radio frequency over glass (RFoG) that made broadband cable operators envision using it to
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)? - Answer RFoG can operate in
parallel with GPON or EPON, which eliminates the need for any downtime during the transition.
How are optical splitters used in the forward path? - Answer In the forward path, optical splitters are used as
passive branching devices that divide an optical signal across multiple output fibers.
Which of the following describes a fiber pigtail? - Answer Fiber-optic cable with pre-connectorized
ends.
Heat shrink tubing is installed over the fusion-splice to strengthen and protect it. When should the heat shrink
be installed on the fiber? - Answer Before stripping the plastic coating from the fiber.
, Which of the following are statements of true 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 The square of
7 = - Answer 49
The square root of 81 = - Answer 9
0.00004 = ___________ 10 to the power of . - Answer 4, -5
(75 x 10 to the power of 3) + (25 x 10 to the power of 4) = - Answer 32.5 x 10 to the power
of 4
10 to the power of -3 has a metric prefix of ------------------------- Answer Milli
(480 x 10 to the power of -5) divided by (60 x 10 to the power of -3) = - Answer 8 x 10 to the
power of -2
(250 x 10 to the power of -6) - (7 x 10 to the power of -5) = - Answer 180 x 10 to the power
of -6
(75 × 103) + (25 × 104) = - Answer (*Wrong) 100 × 10^3
(-25) + (42) + (-62) + (20) = - Answer -25
(17) x (-19) = - Answer -323
(-17) - (-34) = - Answer 17
,What uses the 2.4-GHz band and runs at 54 Mbps? - Answer 802.11g
What is one reason why broadband cable operators install fiber-optic cable in stages instead of changing the
infrastructure all at once? - Answer Changing the infrastructure all at once would cause too many service
disruptions.
What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-curb (FTTC) topologies? - Answer An
FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises.
Which of these components is used in a passive optical network (PON)? - Answer Optical splitters.
Which type of star topology used 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? -
Answer Distributed star.
Which element of a passive optical network (PON) uses a Bragg grating filter? - Answer Optical line terminal (OLT).
Which element of a passive optical network (PON) uses patch panels? - Answer Optical distribution network (ODN).
What is it about radio frequency over glass (RFoG) that made broadband cable operators envision using it to
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)? - Answer RFoG can operate in
parallel with GPON or EPON, which eliminates the need for any downtime during the transition.
How are optical splitters used in the forward path? - Answer In the forward path, optical splitters are used as
passive branching devices that divide an optical signal across multiple output fibers.
Which of the following describes a fiber pigtail? - Answer Fiber-optic cable with pre-connectorized
ends.
Heat shrink tubing is installed over the fusion-splice to strengthen and protect it. When should the heat shrink
be installed on the fiber? - Answer Before stripping the plastic coating from the fiber.
, Which of the following are statements of true 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 The square of
7 = - Answer 49
The square root of 81 = - Answer 9
0.00004 = ___________ 10 to the power of . - Answer 4, -5
(75 x 10 to the power of 3) + (25 x 10 to the power of 4) = - Answer 32.5 x 10 to the power
of 4
10 to the power of -3 has a metric prefix of ------------------------- Answer Milli
(480 x 10 to the power of -5) divided by (60 x 10 to the power of -3) = - Answer 8 x 10 to the
power of -2
(250 x 10 to the power of -6) - (7 x 10 to the power of -5) = - Answer 180 x 10 to the power
of -6
(75 × 103) + (25 × 104) = - Answer (*Wrong) 100 × 10^3
(-25) + (42) + (-62) + (20) = - Answer -25
(17) x (-19) = - Answer -323
(-17) - (-34) = - Answer 17
