Exam (elaborations)
FOA STUDY EXAM QUESTIONS AND ANSWERS
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FOA STUDY EXAM QUESTIONS AND ANSWERS
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FOA STUDY EXAM QUESTIONS ANDANSWERS
True/False
Indicate whether the statement is true or false.
____ 1. Most outside plant installations are singlemode fiber.
____ 2. Splicing is very rare in premises networks.
____ 3. Fiber is used in long distance phone networks because it is much
cheaper than copper wire.
____ 4. Dangerous light from fiber optic cables is bright and easily visible.
____ 5. Besides causing attenuation, dirt particles can cause scratches on
the polished fiber ends. - Answer-True 1.
True2.
true 3.
False4.
true5.
6. 1. Outside plant cabling can be installed by ________.
A. Pulling in underground in conduit
B. Direct burial
C. Aerial suspension
D. All of the above - Answer-D. All of the above
7. Underground cable generally includes a gel, powder or tape for
protection from _______.
A. Pulling friction
B. Lightning strikes
C. Moisture
D. Fiber abrasion - Answer-C. Moisture
8. Armored cable is used in outside plant installations to ________.
A. Prevent rodent damage
B. Protect from dig-up damage
C. Increase pulling tension
D. Conduct lightning strikes - Answer-A. Prevent rodent damage
9. Concatenation or the joining of two cables in a long outside plant
run is almost always done by ______.
A. Mechanical splicing
B. Fusion splicing
FRG-OSP Textbook Guide-Q.doc, 7/26/10, 8
C. Field installation of connectors
D. Splicing on pigtailled connectors - Answer-B. Fusion splicing
,10. Premise cables in LAN backbones often contain _______.
A. Only multimode fiber
B. Only singlemode fiber
C. Both multimode and singlemode fiber
D. Plastic optical fiber - Answer-C. Both multimode and singlemode fiber
11. Premises cables must be rated for ______ to meet codes.
A. Pull strength
B. Bend radius
C. Weight in cable trays
D. Fire retardance - Answer-D. Fire retardance
12. The protective gear every VDV installer must always wear is
_______.
A. Eye protection
B. Plastic apron
C. Gloves
D. Shoe covers - Answer-A. Eye protection
13. Information on the safety of chemicals used in fiber optics are
________.
A. Available from National Institutes of Health
B. In MSDS sheets supplied by manufacturers
C. Required to be in every installerʼs tool kit
D. Rarely useful - Answer-B. In MSDS sheets supplied by manufacturers
14. Always keep ________ on connectors when not connected to
equipment or being tested.
A. Mating adapters
B. Strain relief boots
C. Sticky tape
D. Dust caps - Answer-D. Dust caps
True/False
1. Optical fibers can transmit either voice, data or video and either
analog or digital signals.
2. Singlemode fiber has a smaller core than multimode fiber. - Answer-1. true
2. true
3. In an optical fiber, the light is transmitted through the ___________.
A. Core
B. Cladding
C. Buffer
D. Jacket - Answer-A. Core
4. The diameter of an optical fiber is traditionally measured in _____.
, A. Meters
B. Millimeters
C. Microns (micrometers)
D. Nanometers - Answer-C. Microns (micrometers)
5. Rays of light transmitted in multimode fiber are called ________.
A. Reflections
B. Refractions
C. Waves
D. Modes - Answer-D. Modes
6. Loss of a fiber or any fiber in a cable is measured in ______.
A. dB
B. dBm
C. milliwatts - Answer-
7. 10 dB corresponds to a factor of _____ in power.
A. 2
B. 10
C. 20
D. 100 - Answer-A. 2
8. A fiber stripper removes the _________ of the fiber.
A. Core
B. Cladding
C. Buffer coating - Answer-C. Buffer coating
9. The ___ protects the fiber from harm.
A. Primary buffer coating
B. Aramid fiber strength members
C. Jacket
D. All of the above - Answer-D. All of the above
10. Which fiber optic test instrument uses backscattered light for
measurements?
A. OLTS
B. OTDR
C. VFL
D. Tracer - Answer-B. OTDR
11. The wavelength of light used for most fiber optic systems is in the
________ region and _______ to the human eye.
A. ultraviolet, invisible
B. solar, visible
C. infrared,, invisible - Answer-C. infrared,, invisible
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