COLORADO FIBRE SPLICING TECHNICIAN
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A
2026|INSTANT DOWNLAOD PDF
1. What is the primary purpose of fiber optic splicing?
A. To increase electrical conductivity
B. To join two optical fibers with minimal signal loss
C. To convert optical signals into electrical signals
D. To amplify light signals along the cable
Correct Answer: B
Rationale: Fiber splicing is used to permanently or temporarily
join two optical fibers while maintaining low optical loss and
signal integrity.
2. Which type of fiber uses a core size of approximately 9
microns?
A. Multimode fiber
B. Plastic optical fiber
C. Single-mode fiber
D. Coaxial fiber
Correct Answer: C
Rationale: Single-mode fiber typically has a small core (~8–10
microns), allowing only one light path for long-distance
transmission.
,3. What device is commonly used to permanently join two
fiber ends using heat?
A. Mechanical splice
B. Fusion splicer
C. Optical power meter
D. OTDR
Correct Answer: B
Rationale: A fusion splicer uses an electric arc to melt and
permanently fuse fiber ends together.
4. What is the main cause of signal loss in a poor fiber splice?
A. Excessive cable shielding
B. Misalignment of fiber cores
C. Too much light input
D. High voltage interference
Correct Answer: B
Rationale: Core misalignment leads to light escaping the fiber
path, causing splice loss.
5. Which tool is used to precisely cut fiber ends before
splicing?
A. Stripper
B. Cleaver
,C. OTDR
D. VFL
Correct Answer: B
Rationale: A fiber cleaver produces a perfectly flat end face for
proper splicing.
6. What does OTDR stand for?
A. Optical Transmission Data Router
B. Optical Time Domain Reflectometer
C. Optical Testing Distance Reader
D. Optical Telecommunication Distribution Relay
Correct Answer: B
Rationale: OTDR is used to test fiber length, loss, and fault
locations.
7. Which type of fiber is best for short-distance
communication and LAN networks?
A. Single-mode fiber
B. Multimode fiber
C. Metallic fiber
D. Plastic-coated copper
Correct Answer: B
Rationale: Multimode fiber has a larger core and is ideal for
short distances like LANs.
, 8. What is the typical unit used to measure optical power loss
in fiber systems?
A. Watts
B. Ohms
C. Decibels (dB)
D. Hertz
Correct Answer: C
Rationale: Optical loss and gain are measured in decibels.
9. Which safety hazard is most associated with fiber optic
work?
A. Electrical shock
B. Laser radiation exposure
C. Chemical burns from acid
D. Radiation poisoning
Correct Answer: B
Rationale: Fiber systems use laser light, which can damage eyes
if exposed directly.
10. What is the purpose of buffer coating on fiber optic
cables?
A. Increase light speed
B. Protect the fiber from physical damage
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A
2026|INSTANT DOWNLAOD PDF
1. What is the primary purpose of fiber optic splicing?
A. To increase electrical conductivity
B. To join two optical fibers with minimal signal loss
C. To convert optical signals into electrical signals
D. To amplify light signals along the cable
Correct Answer: B
Rationale: Fiber splicing is used to permanently or temporarily
join two optical fibers while maintaining low optical loss and
signal integrity.
2. Which type of fiber uses a core size of approximately 9
microns?
A. Multimode fiber
B. Plastic optical fiber
C. Single-mode fiber
D. Coaxial fiber
Correct Answer: C
Rationale: Single-mode fiber typically has a small core (~8–10
microns), allowing only one light path for long-distance
transmission.
,3. What device is commonly used to permanently join two
fiber ends using heat?
A. Mechanical splice
B. Fusion splicer
C. Optical power meter
D. OTDR
Correct Answer: B
Rationale: A fusion splicer uses an electric arc to melt and
permanently fuse fiber ends together.
4. What is the main cause of signal loss in a poor fiber splice?
A. Excessive cable shielding
B. Misalignment of fiber cores
C. Too much light input
D. High voltage interference
Correct Answer: B
Rationale: Core misalignment leads to light escaping the fiber
path, causing splice loss.
5. Which tool is used to precisely cut fiber ends before
splicing?
A. Stripper
B. Cleaver
,C. OTDR
D. VFL
Correct Answer: B
Rationale: A fiber cleaver produces a perfectly flat end face for
proper splicing.
6. What does OTDR stand for?
A. Optical Transmission Data Router
B. Optical Time Domain Reflectometer
C. Optical Testing Distance Reader
D. Optical Telecommunication Distribution Relay
Correct Answer: B
Rationale: OTDR is used to test fiber length, loss, and fault
locations.
7. Which type of fiber is best for short-distance
communication and LAN networks?
A. Single-mode fiber
B. Multimode fiber
C. Metallic fiber
D. Plastic-coated copper
Correct Answer: B
Rationale: Multimode fiber has a larger core and is ideal for
short distances like LANs.
, 8. What is the typical unit used to measure optical power loss
in fiber systems?
A. Watts
B. Ohms
C. Decibels (dB)
D. Hertz
Correct Answer: C
Rationale: Optical loss and gain are measured in decibels.
9. Which safety hazard is most associated with fiber optic
work?
A. Electrical shock
B. Laser radiation exposure
C. Chemical burns from acid
D. Radiation poisoning
Correct Answer: B
Rationale: Fiber systems use laser light, which can damage eyes
if exposed directly.
10. What is the purpose of buffer coating on fiber optic
cables?
A. Increase light speed
B. Protect the fiber from physical damage
