MT II-III Fiber-Optic Engineering Concepts Questions
With Complete Solutions
A fiber-optic network maintenance plan should be developed
with which of the following in mind?
A. Planning should begin long after the conceptual design of the
network.
B. As the network evolves through expansion, moves, and
changes, the details of the maintenance plan remain as they
were.
C. The task of compiling the physical document must become
the responsibility of an identifiable position or organization.
D. The plan is a static methodology that is performed only once
to ensure that all specifications are close. Correct Answer C.
The task of compiling the physical document must become the
responsibility of an identifiable position or organization.
During installation of fiber-optic cable, what does damage to the
cable jacket cause?
A. Immediate service failure.
B. A red glowing light at the point of damage.
C. The light to refract out of the cable.
,D. Moisture migration into the cable. Correct Answer D.
Moisture migration into the cable.
How are optical splices secured in a splice tray?
A. Retaining clips hold optical splices in place in a splice tray.
B. Fast-drying epoxy glue holds optical splices in place in a
splice tray.
C. Cable clips hold optical splices in place in a splice tray.
D. Tie wraps hold optical splices in place in a splice tray.
Correct Answer A. Retaining clips hold optical splices in place
in a splice tray.
How many meters of slack cable is typically used in an aerial
installation?
A. 15-25 meters.
B. 35-45 meters.
C. 25-35 meters.
D. 5-15 meters. Correct Answer A. 15-25 meters.
How should the buffer tubes be secured in the splice closure?
A. The buffer tubes should be secured with tie wraps so that
there is no movement of the optical fibers inside the buffer tube.
,B. The buffer tubes should be secured with cable clips to allow
free movement without pulling or stressing the optical fibers.
C. The buffer tubes should be secured with tie wraps to allow
slight movement without pulling or stressing the optical fibers.
D. The buffer tubes should be unsecured to allow free
movement without pulling or stressing the optical fibers.
Correct Answer C. The buffer tubes should be secured with tie
wraps to allow slight movement without pulling or stressing the
optical fibers.
Improper use of nylon tie wraps can induce what problem?
A. Four-wave mixing.
B. Macrobends.
C. Microbends.
D. Chromatic dispersion. Correct Answer C. Microbends.
In a HFC fiber-optic node, common voltages produced by DC
power supplies are +5, +12, and ________.
A. -12 VDC
B. -24 VDC
C. +18 VDC
, D. +24 VDC Correct Answer D. +24 VDC
In networks transporting data rates higher than _____, F-P lasers
are considered inadequate.
A. 2.5 Gbps.
B. 2 Gbps.
C. 1.5 Gbps.
D. 3 Gbps. Correct Answer A. 2.5 Gbps.
In what applications is a splice closure used?
A. Splice closures slide over the splice to protect against
environmental changes in aerial installations or below ground in
vaults.
B. Splice closures provide the transition between outdoor optical
fiber to indoor fiber.
C. Splice closures house electronics, spare cables, and optical
patch or splice panels.
D. Splice closures protect optical fibers and splices against
environmental changes in aerial installations or below ground in
vaults. Correct Answer D. Splice closures protect optical
fibers and splices against environmental changes in aerial
installations or below ground in vaults.
With Complete Solutions
A fiber-optic network maintenance plan should be developed
with which of the following in mind?
A. Planning should begin long after the conceptual design of the
network.
B. As the network evolves through expansion, moves, and
changes, the details of the maintenance plan remain as they
were.
C. The task of compiling the physical document must become
the responsibility of an identifiable position or organization.
D. The plan is a static methodology that is performed only once
to ensure that all specifications are close. Correct Answer C.
The task of compiling the physical document must become the
responsibility of an identifiable position or organization.
During installation of fiber-optic cable, what does damage to the
cable jacket cause?
A. Immediate service failure.
B. A red glowing light at the point of damage.
C. The light to refract out of the cable.
,D. Moisture migration into the cable. Correct Answer D.
Moisture migration into the cable.
How are optical splices secured in a splice tray?
A. Retaining clips hold optical splices in place in a splice tray.
B. Fast-drying epoxy glue holds optical splices in place in a
splice tray.
C. Cable clips hold optical splices in place in a splice tray.
D. Tie wraps hold optical splices in place in a splice tray.
Correct Answer A. Retaining clips hold optical splices in place
in a splice tray.
How many meters of slack cable is typically used in an aerial
installation?
A. 15-25 meters.
B. 35-45 meters.
C. 25-35 meters.
D. 5-15 meters. Correct Answer A. 15-25 meters.
How should the buffer tubes be secured in the splice closure?
A. The buffer tubes should be secured with tie wraps so that
there is no movement of the optical fibers inside the buffer tube.
,B. The buffer tubes should be secured with cable clips to allow
free movement without pulling or stressing the optical fibers.
C. The buffer tubes should be secured with tie wraps to allow
slight movement without pulling or stressing the optical fibers.
D. The buffer tubes should be unsecured to allow free
movement without pulling or stressing the optical fibers.
Correct Answer C. The buffer tubes should be secured with tie
wraps to allow slight movement without pulling or stressing the
optical fibers.
Improper use of nylon tie wraps can induce what problem?
A. Four-wave mixing.
B. Macrobends.
C. Microbends.
D. Chromatic dispersion. Correct Answer C. Microbends.
In a HFC fiber-optic node, common voltages produced by DC
power supplies are +5, +12, and ________.
A. -12 VDC
B. -24 VDC
C. +18 VDC
, D. +24 VDC Correct Answer D. +24 VDC
In networks transporting data rates higher than _____, F-P lasers
are considered inadequate.
A. 2.5 Gbps.
B. 2 Gbps.
C. 1.5 Gbps.
D. 3 Gbps. Correct Answer A. 2.5 Gbps.
In what applications is a splice closure used?
A. Splice closures slide over the splice to protect against
environmental changes in aerial installations or below ground in
vaults.
B. Splice closures provide the transition between outdoor optical
fiber to indoor fiber.
C. Splice closures house electronics, spare cables, and optical
patch or splice panels.
D. Splice closures protect optical fibers and splices against
environmental changes in aerial installations or below ground in
vaults. Correct Answer D. Splice closures protect optical
fibers and splices against environmental changes in aerial
installations or below ground in vaults.
