COLORADO TELECOMMUNICATION CABBLING
INSTALLER CERTIFICATION EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) Q&A
2026 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of structured cabling in
telecommunications systems?
A. To increase internet speed only
B. To provide a standardized and organized cabling
infrastructure
C. To eliminate the need for switches
D. To replace wireless networks
Correct Answer: B
Rationale: Structured cabling provides a consistent and scalable
system for voice, data, and video communications.
2. Which organization sets most telecommunications cabling
standards in North America?
A. OSHA
B. IEEE
C. TIA/EIA
D. ANSI only
Correct Answer: C
,Rationale: The Telecommunications Industry
Association/Electronic Industries Alliance (TIA/EIA) defines
cabling standards like TIA-568.
3. What type of cable is most commonly used in Ethernet LAN
installations?
A. Coaxial cable
B. Fiber optic cable
C. Twisted pair cable
D. Power cable
Correct Answer: C
Rationale: Twisted pair (UTP/STP) is standard for Ethernet
networks due to cost and performance balance.
4. What does “UTP” stand for?
A. Ultra Transmission Path
B. Unshielded Twisted Pair
C. Unified Telecom Protocol
D. Universal Transfer Port
Correct Answer: B
Rationale: UTP refers to cables without shielding around
twisted pairs.
,5. What is the maximum horizontal cable length
recommended by TIA standards for Ethernet cabling?
A. 50 meters
B. 90 meters
C. 100 meters
D. 150 meters
Correct Answer: C
Rationale: The maximum horizontal run is 100 meters (90m
permanent link + 10m patch cords).
6. Which tool is used to terminate RJ45 connectors?
A. Multimeter
B. Crimping tool
C. Fish tape
D. Punch-down block
Correct Answer: B
Rationale: A crimping tool attaches RJ45 connectors to twisted
pair cables.
7. What is the function of a patch panel?
A. Increase network speed
B. Provide centralized cable management and termination
, C. Replace routers
D. Convert analog signals
Correct Answer: B
Rationale: Patch panels organize and manage cable
terminations in a structured cabling system.
8. Which fire rating is required for cables installed in air-
handling spaces?
A. CM
B. CMP
C. CMX
D. CMG
Correct Answer: B
Rationale: CMP (Plenum-rated) cables are required for air-
handling (plenum) spaces.
9. What device connects multiple network segments and
forwards data based on MAC addresses?
A. Router
B. Switch
C. Modem
D. Repeater
Correct Answer: B
INSTALLER CERTIFICATION EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) Q&A
2026 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of structured cabling in
telecommunications systems?
A. To increase internet speed only
B. To provide a standardized and organized cabling
infrastructure
C. To eliminate the need for switches
D. To replace wireless networks
Correct Answer: B
Rationale: Structured cabling provides a consistent and scalable
system for voice, data, and video communications.
2. Which organization sets most telecommunications cabling
standards in North America?
A. OSHA
B. IEEE
C. TIA/EIA
D. ANSI only
Correct Answer: C
,Rationale: The Telecommunications Industry
Association/Electronic Industries Alliance (TIA/EIA) defines
cabling standards like TIA-568.
3. What type of cable is most commonly used in Ethernet LAN
installations?
A. Coaxial cable
B. Fiber optic cable
C. Twisted pair cable
D. Power cable
Correct Answer: C
Rationale: Twisted pair (UTP/STP) is standard for Ethernet
networks due to cost and performance balance.
4. What does “UTP” stand for?
A. Ultra Transmission Path
B. Unshielded Twisted Pair
C. Unified Telecom Protocol
D. Universal Transfer Port
Correct Answer: B
Rationale: UTP refers to cables without shielding around
twisted pairs.
,5. What is the maximum horizontal cable length
recommended by TIA standards for Ethernet cabling?
A. 50 meters
B. 90 meters
C. 100 meters
D. 150 meters
Correct Answer: C
Rationale: The maximum horizontal run is 100 meters (90m
permanent link + 10m patch cords).
6. Which tool is used to terminate RJ45 connectors?
A. Multimeter
B. Crimping tool
C. Fish tape
D. Punch-down block
Correct Answer: B
Rationale: A crimping tool attaches RJ45 connectors to twisted
pair cables.
7. What is the function of a patch panel?
A. Increase network speed
B. Provide centralized cable management and termination
, C. Replace routers
D. Convert analog signals
Correct Answer: B
Rationale: Patch panels organize and manage cable
terminations in a structured cabling system.
8. Which fire rating is required for cables installed in air-
handling spaces?
A. CM
B. CMP
C. CMX
D. CMG
Correct Answer: B
Rationale: CMP (Plenum-rated) cables are required for air-
handling (plenum) spaces.
9. What device connects multiple network segments and
forwards data based on MAC addresses?
A. Router
B. Switch
C. Modem
D. Repeater
Correct Answer: B
