Nevada Fiber Optic Technician
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. What is the primary advantage of fiber optic cabling over copper
cabling?
A. Lower installation cost
B. Immunity to electromagnetic interference
C. Easier splicing
D. Requires no testing
B
Fiber optic cables transmit light rather than electrical signals, making
them immune to electromagnetic interference and radio frequency
interference.
2. Which component transmits data as light pulses in a fiber system?
A. Transceiver
B. Patch panel
C. Splice tray
D. Conduit
A
A transceiver converts electrical signals into optical signals and vice
versa, enabling data transmission through fiber.
3. What does single-mode fiber primarily support?
A. Short-distance, high-loss transmission
B. Long-distance, high-bandwidth transmission
C. Voice only
, D. Indoor residential use only
B
Single-mode fiber allows light to travel in one path, reducing
dispersion and enabling long-distance communication.
4. Which tool is commonly used to measure optical power?
A. Multimeter
B. OTDR
C. Optical power meter
D. Tone generator
C
An optical power meter measures signal strength in dBm to verify
proper light levels in fiber links.
5. What does an OTDR primarily measure?
A. Voltage levels
B. Fiber length and faults
C. Signal encryption
D. Cable color coding
B
An Optical Time Domain Reflectometer identifies faults, splice losses,
and cable length by sending light pulses and analyzing reflections.
6. Which connector type is widely used in modern fiber networks?
A. RJ45
B. SC
C. BNC
D. F-type
B
SC connectors are common due to their push-pull design and reliable
performance.
7. What is the typical unit of measurement for optical power?
A. Watts
B. Ohms
C. dBm
D. Hertz
C
, Optical power is commonly measured in decibels relative to one
milliwatt (dBm).
8. What causes signal loss when fiber is bent excessively?
A. Reflection
B. Attenuation due to macro-bending
C. Dispersion
D. Refraction index change only
B
Excessive bending causes light to escape the core, resulting in macro-
bending losses.
9. Which safety precaution is essential when working with fiber optics?
A. Wearing insulated gloves
B. Avoiding direct eye exposure to fiber ends
C. Using rubber boots
D. Grounding the cable
B
Fiber light sources can damage eyes; technicians must never look
directly into active fiber ends.
10. What is the purpose of fiber splicing?
A. Increase cable diameter
B. Join two fiber strands permanently
C. Reduce voltage
D. Add insulation
B
Splicing permanently joins fibers to maintain signal continuity across
cable sections.
11. Which type of splice provides the lowest loss?
A. Mechanical splice
B. Fusion splice
C. Twist splice
D. Crimp splice
B
Fusion splicing uses heat to permanently join fibers with minimal
signal loss.
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary advantage of fiber optic cabling over copper
cabling?
A. Lower installation cost
B. Immunity to electromagnetic interference
C. Easier splicing
D. Requires no testing
B
Fiber optic cables transmit light rather than electrical signals, making
them immune to electromagnetic interference and radio frequency
interference.
2. Which component transmits data as light pulses in a fiber system?
A. Transceiver
B. Patch panel
C. Splice tray
D. Conduit
A
A transceiver converts electrical signals into optical signals and vice
versa, enabling data transmission through fiber.
3. What does single-mode fiber primarily support?
A. Short-distance, high-loss transmission
B. Long-distance, high-bandwidth transmission
C. Voice only
, D. Indoor residential use only
B
Single-mode fiber allows light to travel in one path, reducing
dispersion and enabling long-distance communication.
4. Which tool is commonly used to measure optical power?
A. Multimeter
B. OTDR
C. Optical power meter
D. Tone generator
C
An optical power meter measures signal strength in dBm to verify
proper light levels in fiber links.
5. What does an OTDR primarily measure?
A. Voltage levels
B. Fiber length and faults
C. Signal encryption
D. Cable color coding
B
An Optical Time Domain Reflectometer identifies faults, splice losses,
and cable length by sending light pulses and analyzing reflections.
6. Which connector type is widely used in modern fiber networks?
A. RJ45
B. SC
C. BNC
D. F-type
B
SC connectors are common due to their push-pull design and reliable
performance.
7. What is the typical unit of measurement for optical power?
A. Watts
B. Ohms
C. dBm
D. Hertz
C
, Optical power is commonly measured in decibels relative to one
milliwatt (dBm).
8. What causes signal loss when fiber is bent excessively?
A. Reflection
B. Attenuation due to macro-bending
C. Dispersion
D. Refraction index change only
B
Excessive bending causes light to escape the core, resulting in macro-
bending losses.
9. Which safety precaution is essential when working with fiber optics?
A. Wearing insulated gloves
B. Avoiding direct eye exposure to fiber ends
C. Using rubber boots
D. Grounding the cable
B
Fiber light sources can damage eyes; technicians must never look
directly into active fiber ends.
10. What is the purpose of fiber splicing?
A. Increase cable diameter
B. Join two fiber strands permanently
C. Reduce voltage
D. Add insulation
B
Splicing permanently joins fibers to maintain signal continuity across
cable sections.
11. Which type of splice provides the lowest loss?
A. Mechanical splice
B. Fusion splice
C. Twist splice
D. Crimp splice
B
Fusion splicing uses heat to permanently join fibers with minimal
signal loss.
