FOA CFOT CERTIFICATION EXAM V11 KEY
CONCEPTS AND SKILLS GUIDE 2026
◉ 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
, ◉ True/False
1. The biggest advantage of optical fiber is the fact it is the most cost
effective means of transporting information.
2. Telephone networks have been converted to fiber, including long
distance and metropolitan networks, but fiber to the home (FTTH) is
not yet
feasible. Answer: 1. true
2. false
◉ 3. Today, with the exception of some _________, the entire telephone
backbone is fiber optics.
A. Rugged or remote locations
B. Ultra-high speed connections
C. Ultra-high speed connections
D. Triple play systems Answer: A. Rugged or remote locations
◉ 4. _______ companies "overbuild with fiber, often lashing fiber optic
cables to installed aerial coax cable.
A. Independent telephone
B. CATV
C. Utilities
D. Private network Answer: B. CATV
CONCEPTS AND SKILLS GUIDE 2026
◉ 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
, ◉ True/False
1. The biggest advantage of optical fiber is the fact it is the most cost
effective means of transporting information.
2. Telephone networks have been converted to fiber, including long
distance and metropolitan networks, but fiber to the home (FTTH) is
not yet
feasible. Answer: 1. true
2. false
◉ 3. Today, with the exception of some _________, the entire telephone
backbone is fiber optics.
A. Rugged or remote locations
B. Ultra-high speed connections
C. Ultra-high speed connections
D. Triple play systems Answer: A. Rugged or remote locations
◉ 4. _______ companies "overbuild with fiber, often lashing fiber optic
cables to installed aerial coax cable.
A. Independent telephone
B. CATV
C. Utilities
D. Private network Answer: B. CATV
