1
Fiber Testing & Maintenance
Conventional Questions and Correct
Answers
Question: Which of the following is true regarding maintenance of the
optical network? choose all that apply.
Answer: ITU-T designation encompasses all things voice, data, and video.
FTTx networks incorporate a point-to-multipoint (P2MP) optical topology
that requires greater fiber color code management.
Question: What is the purpose of good maintenance practices?
Answer: Good maintenance practices minimize failures that might have
otherwise occurred with ongoing neglect and identify potential
performance issues before they become problems.
Question: What is essential for efficient fiber-optic network
troubleshooting?
Answer: Network documentation is essential for efficient fiber-optic
network troubleshooting.
Question: What are some best practices when maintaining the outside
plant? Choose all that apply.
Answer: Check aerial spans for obstructions, lashing integrity, lashing
clamps, suspension clamps, physical damage, snowshoe clamps, radius,
cable sag, and dressing.
Always use riser guards at aerial to underground transition points.
Question: What are the two most common problems around patch
panels?
Answer: The two most common problems around patch panels are
microbends and macrobends.
Pretest - Stuvia US
,2
Question: When might an organization choose to open and inspect
splice closures for moisture and improper sealing?
Answer: For splice closures in underground vaults where the potential for
freezing exists, the cable operator should open and inspect the closures
for standing water; the operator may choose not to inspect in areas when
freezing is not a problem.
Question: If the network consists of multiple links, the first task is to
identify which link is experiencing trouble. Once the fault is isolated to a
specific link or links, only three test procedures are required to isolate the
fault within the link. Performing the tests in this order will quickly locate
the most common cause(s) of trouble. What is the correct order?
Answer: test receive, test transmitter, testopticla path between
transmitter and receiver
Question: What are the three elements of an outside plant fiber-optic
network?
Answer: The three elements of an outside plant fiber-optic network are
the transmitter, receiver, and the outside plant (the fiber segments)
Question: Which instrument can be used to find faults within an optical
time domain reflectometer's dead zone?
Answer: A visual laser can be used to find faults within an OTDR's dead
zone.
Question: When changes are made to any network, what is needed to
keep a maintenance plan current?
Answer: Whenever changes are made to any network, its documentation
must be updated to keep maintenance plans current.
Question: What must be replaced periodically in a maintenance posture?
Answer: Date-coded products used for maintenance or restoration must
be replaced periodically in a maintenance posture.
Pretest - Stuvia US
, 3
Question: What topology do most fiber-to-the-user (FTTx) networks
use, which requires greater fiver color code management in its
documentation?
Answer: Point-to-multipoint (P2MP)
Question: Improper use of nylon tie wraps can induce this problem:
Answer: Microbends
Question: Which of the following statements is true regarding optimum
performance in the fiber-optic network?
Answer: The role of maintenance is to proactively maintain network
tolerances and recognize, locate, and remedy potential problems.
Question: A fiber-optic network maintenance plan should be developed
with which of the following in mind?
Answer: The task of compiling the physical document must become the
responsibility of an identifiable position or organization.
Question: What is the best way to prevent problems in outside fiber-
optic splice enclosures?
Answer: The outer jacket and the internal cable structures must be
secured individually to protect the closure and splice trays from the
effects of expansion and contraction.
Question: Which of the following is true regarding the troubleshooting
process?
Answer: The troubleshooting process should include steps that identify,
analyze, and locate the problem as well as diagnose its source, repair the
problem, and test to ensure the problem is resolved.
Question: Which of the following is true when using troubleshooting
equipment to test the fiber-optic plant?
Answer: An optical power meter is used to measure the strength of light
signals anywhere in a fiber system where a connection can be made.
Pretest - Stuvia US
Fiber Testing & Maintenance
Conventional Questions and Correct
Answers
Question: Which of the following is true regarding maintenance of the
optical network? choose all that apply.
Answer: ITU-T designation encompasses all things voice, data, and video.
FTTx networks incorporate a point-to-multipoint (P2MP) optical topology
that requires greater fiber color code management.
Question: What is the purpose of good maintenance practices?
Answer: Good maintenance practices minimize failures that might have
otherwise occurred with ongoing neglect and identify potential
performance issues before they become problems.
Question: What is essential for efficient fiber-optic network
troubleshooting?
Answer: Network documentation is essential for efficient fiber-optic
network troubleshooting.
Question: What are some best practices when maintaining the outside
plant? Choose all that apply.
Answer: Check aerial spans for obstructions, lashing integrity, lashing
clamps, suspension clamps, physical damage, snowshoe clamps, radius,
cable sag, and dressing.
Always use riser guards at aerial to underground transition points.
Question: What are the two most common problems around patch
panels?
Answer: The two most common problems around patch panels are
microbends and macrobends.
Pretest - Stuvia US
,2
Question: When might an organization choose to open and inspect
splice closures for moisture and improper sealing?
Answer: For splice closures in underground vaults where the potential for
freezing exists, the cable operator should open and inspect the closures
for standing water; the operator may choose not to inspect in areas when
freezing is not a problem.
Question: If the network consists of multiple links, the first task is to
identify which link is experiencing trouble. Once the fault is isolated to a
specific link or links, only three test procedures are required to isolate the
fault within the link. Performing the tests in this order will quickly locate
the most common cause(s) of trouble. What is the correct order?
Answer: test receive, test transmitter, testopticla path between
transmitter and receiver
Question: What are the three elements of an outside plant fiber-optic
network?
Answer: The three elements of an outside plant fiber-optic network are
the transmitter, receiver, and the outside plant (the fiber segments)
Question: Which instrument can be used to find faults within an optical
time domain reflectometer's dead zone?
Answer: A visual laser can be used to find faults within an OTDR's dead
zone.
Question: When changes are made to any network, what is needed to
keep a maintenance plan current?
Answer: Whenever changes are made to any network, its documentation
must be updated to keep maintenance plans current.
Question: What must be replaced periodically in a maintenance posture?
Answer: Date-coded products used for maintenance or restoration must
be replaced periodically in a maintenance posture.
Pretest - Stuvia US
, 3
Question: What topology do most fiber-to-the-user (FTTx) networks
use, which requires greater fiver color code management in its
documentation?
Answer: Point-to-multipoint (P2MP)
Question: Improper use of nylon tie wraps can induce this problem:
Answer: Microbends
Question: Which of the following statements is true regarding optimum
performance in the fiber-optic network?
Answer: The role of maintenance is to proactively maintain network
tolerances and recognize, locate, and remedy potential problems.
Question: A fiber-optic network maintenance plan should be developed
with which of the following in mind?
Answer: The task of compiling the physical document must become the
responsibility of an identifiable position or organization.
Question: What is the best way to prevent problems in outside fiber-
optic splice enclosures?
Answer: The outer jacket and the internal cable structures must be
secured individually to protect the closure and splice trays from the
effects of expansion and contraction.
Question: Which of the following is true regarding the troubleshooting
process?
Answer: The troubleshooting process should include steps that identify,
analyze, and locate the problem as well as diagnose its source, repair the
problem, and test to ensure the problem is resolved.
Question: Which of the following is true when using troubleshooting
equipment to test the fiber-optic plant?
Answer: An optical power meter is used to measure the strength of light
signals anywhere in a fiber system where a connection can be made.
Pretest - Stuvia US
