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ARIZONA CR-67 LOW VOLTAGE
COMMUNICATION SYSTEMS CONTRACTOR
EXAM | 2026/2027 EDITION | VERIFIED
QUESTIONS WITH DETAILED ANSWERS AND
RATIONALES | BRAND NEW!
1. A low voltage contractor is installing a structured cabling system in
a commercial building. The customer requests that the horizontal
cabling support 10 Gbps data rates to a distance of 100 meters. Which
cable category should the contractor specify?
A) Cat 5e
B) Cat 6
C) Cat 6A
D) Cat 3
Explanation: Cat 6A (Augmented Category 6) is rated for 10GBASE-T
transmission at frequencies up to 500 MHz and supports 10 Gbps over
the full 100-meter channel distance. Cat 6 is limited to 10 Gbps at
distances up to 55 meters, while Cat 5e supports only 1 Gbps at 100
meters. Cat 3 is suitable only for voice and low-speed data applications.
2. Under Arizona Revised Statutes (A.R.S.) § 32-1121, which agency is
responsible for licensing and regulating contractors, including CR-67
low voltage communication systems contractors?
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A) Arizona Department of Revenue
B) Arizona Registrar of Contractors (ROC)
C) Arizona Corporation Commission
D) Arizona Department of Environmental Quality
Explanation: The Arizona Registrar of Contractors (ROC) is the state
agency responsible for licensing and regulating contractors in Arizona.
The ROC ensures contractors are qualified and comply with state laws,
including the CR-67 Low Voltage Communication Systems classification.
3. According to NEC Article 725, which class of circuit is defined as a
power-limited circuit that operates at 30 volts or less and is not
capable of igniting a flammable atmosphere under normal operating
conditions?
A) Class 1
B) Class 2
C) Class 3
D) Class 4
Explanation: Class 2 circuits are power-limited circuits defined in NEC
Article 725, Part III. They operate at 30 volts or less (or up to 100 volts
for certain applications) and are inherently limited in power so they do
not present a shock or fire hazard under normal conditions. Class 1
circuits are not power-limited in the same manner, and Class 3 circuits
have different voltage and power limitations.
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4. A technician is installing a fire alarm system in a commercial
building. According to NFPA 72, what is the maximum allowable
spacing for spot-type smoke detectors installed on a smooth ceiling?
A) 15 feet
B) 30 feet
C) 45 feet
D) 50 feet
Explanation: NFPA 72 specifies that the maximum spacing for spot-type
smoke detectors on smooth ceilings is 30 feet (9.1 meters) between
detectors, with the first detector located no more than 15 feet from any
wall. This spacing is based on the detector's listed coverage area and
ceiling height considerations.
5. A low voltage contractor is preparing to install a
telecommunications bonding and grounding system in a new
commercial building. According to TIA-607, where should the
telecommunications bonding infrastructure originate?
A) At the nearest convenience outlet
B) At the electrical entrance facility ground (EFG)
C) At the main telecommunications room only
D) At the building's structural steel frame
Explanation: According to ANSI/TIA-607, the telecommunications
bonding and grounding infrastructure originates at the electrical
entrance facility ground (EFG), which is external to the building. This
ensures a common grounding electrode system for both electrical and
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telecommunications systems, reducing potential differences and
ensuring personnel safety.
6. Under Arizona ROC rules, what is the minimum amount of verifiable
experience required to qualify for the CR-67 Low Voltage
Communication Systems contractor license?
A) 1 year
B) 2 years
C) 3 years
D) 4 years
Explanation: Arizona requires applicants for the CR-67 license to have a
minimum of 2 years of verifiable hands-on and/or managerial
experience in low voltage communication systems work. This experience
must be documented and verified through the ROC application process.
7. A technician is troubleshooting a Class 2 circuit that has stopped
functioning. The technician measures 0 volts at the load. Which of the
following is the MOST likely cause?
A) The load device is drawing too much current
B) The power supply has failed or the circuit is open
C) The conductor size is too large
D) The circuit is properly grounded
Explanation: A reading of 0 volts at the load indicates that no voltage is
reaching the device. This is most commonly caused by an open circuit
(broken conductor, loose connection, or failed power supply) or a failed
ARIZONA CR-67 LOW VOLTAGE
COMMUNICATION SYSTEMS CONTRACTOR
EXAM | 2026/2027 EDITION | VERIFIED
QUESTIONS WITH DETAILED ANSWERS AND
RATIONALES | BRAND NEW!
1. A low voltage contractor is installing a structured cabling system in
a commercial building. The customer requests that the horizontal
cabling support 10 Gbps data rates to a distance of 100 meters. Which
cable category should the contractor specify?
A) Cat 5e
B) Cat 6
C) Cat 6A
D) Cat 3
Explanation: Cat 6A (Augmented Category 6) is rated for 10GBASE-T
transmission at frequencies up to 500 MHz and supports 10 Gbps over
the full 100-meter channel distance. Cat 6 is limited to 10 Gbps at
distances up to 55 meters, while Cat 5e supports only 1 Gbps at 100
meters. Cat 3 is suitable only for voice and low-speed data applications.
2. Under Arizona Revised Statutes (A.R.S.) § 32-1121, which agency is
responsible for licensing and regulating contractors, including CR-67
low voltage communication systems contractors?
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A) Arizona Department of Revenue
B) Arizona Registrar of Contractors (ROC)
C) Arizona Corporation Commission
D) Arizona Department of Environmental Quality
Explanation: The Arizona Registrar of Contractors (ROC) is the state
agency responsible for licensing and regulating contractors in Arizona.
The ROC ensures contractors are qualified and comply with state laws,
including the CR-67 Low Voltage Communication Systems classification.
3. According to NEC Article 725, which class of circuit is defined as a
power-limited circuit that operates at 30 volts or less and is not
capable of igniting a flammable atmosphere under normal operating
conditions?
A) Class 1
B) Class 2
C) Class 3
D) Class 4
Explanation: Class 2 circuits are power-limited circuits defined in NEC
Article 725, Part III. They operate at 30 volts or less (or up to 100 volts
for certain applications) and are inherently limited in power so they do
not present a shock or fire hazard under normal conditions. Class 1
circuits are not power-limited in the same manner, and Class 3 circuits
have different voltage and power limitations.
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4. A technician is installing a fire alarm system in a commercial
building. According to NFPA 72, what is the maximum allowable
spacing for spot-type smoke detectors installed on a smooth ceiling?
A) 15 feet
B) 30 feet
C) 45 feet
D) 50 feet
Explanation: NFPA 72 specifies that the maximum spacing for spot-type
smoke detectors on smooth ceilings is 30 feet (9.1 meters) between
detectors, with the first detector located no more than 15 feet from any
wall. This spacing is based on the detector's listed coverage area and
ceiling height considerations.
5. A low voltage contractor is preparing to install a
telecommunications bonding and grounding system in a new
commercial building. According to TIA-607, where should the
telecommunications bonding infrastructure originate?
A) At the nearest convenience outlet
B) At the electrical entrance facility ground (EFG)
C) At the main telecommunications room only
D) At the building's structural steel frame
Explanation: According to ANSI/TIA-607, the telecommunications
bonding and grounding infrastructure originates at the electrical
entrance facility ground (EFG), which is external to the building. This
ensures a common grounding electrode system for both electrical and
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telecommunications systems, reducing potential differences and
ensuring personnel safety.
6. Under Arizona ROC rules, what is the minimum amount of verifiable
experience required to qualify for the CR-67 Low Voltage
Communication Systems contractor license?
A) 1 year
B) 2 years
C) 3 years
D) 4 years
Explanation: Arizona requires applicants for the CR-67 license to have a
minimum of 2 years of verifiable hands-on and/or managerial
experience in low voltage communication systems work. This experience
must be documented and verified through the ROC application process.
7. A technician is troubleshooting a Class 2 circuit that has stopped
functioning. The technician measures 0 volts at the load. Which of the
following is the MOST likely cause?
A) The load device is drawing too much current
B) The power supply has failed or the circuit is open
C) The conductor size is too large
D) The circuit is properly grounded
Explanation: A reading of 0 volts at the load indicates that no voltage is
reaching the device. This is most commonly caused by an open circuit
(broken conductor, loose connection, or failed power supply) or a failed
