California Low Voltage Systems
Contractor (C-7) License Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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CORE DOMAINS COVERED IN THIS EXAM
1. Job Planning and Design (18%) - Plan interpretation, wire routing,
code compliance, integration of systems
2. Material Selection and Estimation (15%) - Materials, tools, cost
estimation, proposal preparation
3. Wire/Cable Installation and Termination (12%) - Pathways,
termination methods, labeling schemes
4. Systems Configuration and Installation (16%) - CCTV, telephone,
data, fiber optic, audio/video, building automation
5. Testing and Project Closeout (17%) - Testing tools and methods,
documentation, training
6. System Troubleshooting and Repairs (7%) - Problem diagnosis,
repairs, replacements
7. Safety (15%) - Cal/OSHA regulations, job site hazards, safe work
practices
,1. What is the maximum voltage level that defines "low voltage" systems
for the California C-7 classification?
A. 24 volts
B. 50 volts
C. 91 volts
D. 120 volts
ANSWER: C. 91 volts
RATIONALE: A C-7 Low Voltage Systems Contractor installs, services, and
maintains systems that are energy limited and do not exceed 91 volts. This is
the specific threshold established by the California Contractors State License
Board for the C-7 classification.
2. What is the primary purpose of a low voltage system in a building?
A. Deliver main electrical service
B. Provide communication, security, and data services
C. Supply backup generator power
D. Control HVAC loads
ANSWER: B. Provide communication, security, and data services
RATIONALE: Low voltage systems are primarily used for communication,
data, security, and control services—not for power delivery. These systems
include telephone, sound, cable television, closed-circuit video, satellite
systems, instrumentation, and temperature controls.
3. According to the California Code of Regulations, which of the following
is specifically EXCLUDED from the C-7 classification?
A. Telephone systems
B. Sound systems
C. Low voltage fire alarm systems
D. Satellite dish antennas
ANSWER: C. Low voltage fire alarm systems
, RATIONALE: Low voltage fire alarm systems are specifically not included
in the C-7 classification. These systems typically fall under the C-10 Electrical
Contractor classification or require specialized certifications.
4. Which organization is responsible for setting telecommunications
cabling standards?
A. NEC (National Electrical Code)
B. UL (Underwriters Laboratories)
C. TIA/EIA (Telecommunications Industry Association/Electronic Industries
Alliance)
D. OSHA (Occupational Safety and Health Administration)
ANSWER: C. TIA/EIA
RATIONALE: TIA/EIA sets industry standards for telecommunications
and networking cabling systems. The primary standard is ANSI/TIA-568,
which defines structured cabling system requirements for commercial
buildings.
5. What type of fire alarm system uses addressable devices that can
pinpoint individual device locations?
A. Conventional system
B. Addressable system
C. Manual system
D. Local system
ANSWER: B. Addressable system
RATIONALE: Addressable systems can pinpoint individual device
locations in the event of an alarm. Each device has a unique address, allowing
the control panel to identify exactly which device has been activated.
6. Which connector type is standard for coaxial cable used in TV and
surveillance systems?
, A. RJ-45
B. BNC
C. F-type
D. HDMI
ANSWER: C. F-type
RATIONALE: F-type connectors are the standard for coaxial cable used in
television and surveillance systems. They provide a secure, threaded
connection that maintains signal integrity.
7. What is the maximum distance for a Cat 6 Ethernet cable run before
signal degradation requires a repeater or switch?
A. 50 meters (164 feet)
B. 100 meters (328 feet)
C. 150 meters (492 feet)
D. 200 meters (656 feet)
ANSWER: B. 100 meters (328 feet)
RATIONALE: The maximum distance for Cat 5e, Cat 6, and Cat 6A cable is
100 meters (328 feet). Beyond this distance, signal degradation occurs and
requires active equipment such as repeaters or switches.
8. Which device is used to connect multiple network devices on a local
area network and direct data traffic between them?
A. Modem
B. Router
C. Switch
D. Amplifier
ANSWER: C. Switch
RATIONALE: A switch manages and directs data traffic between devices
on a local area network. Unlike a hub, a switch intelligently forwards data only
to the intended recipient device.
Contractor (C-7) License Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download PDF
CORE DOMAINS COVERED IN THIS EXAM
1. Job Planning and Design (18%) - Plan interpretation, wire routing,
code compliance, integration of systems
2. Material Selection and Estimation (15%) - Materials, tools, cost
estimation, proposal preparation
3. Wire/Cable Installation and Termination (12%) - Pathways,
termination methods, labeling schemes
4. Systems Configuration and Installation (16%) - CCTV, telephone,
data, fiber optic, audio/video, building automation
5. Testing and Project Closeout (17%) - Testing tools and methods,
documentation, training
6. System Troubleshooting and Repairs (7%) - Problem diagnosis,
repairs, replacements
7. Safety (15%) - Cal/OSHA regulations, job site hazards, safe work
practices
,1. What is the maximum voltage level that defines "low voltage" systems
for the California C-7 classification?
A. 24 volts
B. 50 volts
C. 91 volts
D. 120 volts
ANSWER: C. 91 volts
RATIONALE: A C-7 Low Voltage Systems Contractor installs, services, and
maintains systems that are energy limited and do not exceed 91 volts. This is
the specific threshold established by the California Contractors State License
Board for the C-7 classification.
2. What is the primary purpose of a low voltage system in a building?
A. Deliver main electrical service
B. Provide communication, security, and data services
C. Supply backup generator power
D. Control HVAC loads
ANSWER: B. Provide communication, security, and data services
RATIONALE: Low voltage systems are primarily used for communication,
data, security, and control services—not for power delivery. These systems
include telephone, sound, cable television, closed-circuit video, satellite
systems, instrumentation, and temperature controls.
3. According to the California Code of Regulations, which of the following
is specifically EXCLUDED from the C-7 classification?
A. Telephone systems
B. Sound systems
C. Low voltage fire alarm systems
D. Satellite dish antennas
ANSWER: C. Low voltage fire alarm systems
, RATIONALE: Low voltage fire alarm systems are specifically not included
in the C-7 classification. These systems typically fall under the C-10 Electrical
Contractor classification or require specialized certifications.
4. Which organization is responsible for setting telecommunications
cabling standards?
A. NEC (National Electrical Code)
B. UL (Underwriters Laboratories)
C. TIA/EIA (Telecommunications Industry Association/Electronic Industries
Alliance)
D. OSHA (Occupational Safety and Health Administration)
ANSWER: C. TIA/EIA
RATIONALE: TIA/EIA sets industry standards for telecommunications
and networking cabling systems. The primary standard is ANSI/TIA-568,
which defines structured cabling system requirements for commercial
buildings.
5. What type of fire alarm system uses addressable devices that can
pinpoint individual device locations?
A. Conventional system
B. Addressable system
C. Manual system
D. Local system
ANSWER: B. Addressable system
RATIONALE: Addressable systems can pinpoint individual device
locations in the event of an alarm. Each device has a unique address, allowing
the control panel to identify exactly which device has been activated.
6. Which connector type is standard for coaxial cable used in TV and
surveillance systems?
, A. RJ-45
B. BNC
C. F-type
D. HDMI
ANSWER: C. F-type
RATIONALE: F-type connectors are the standard for coaxial cable used in
television and surveillance systems. They provide a secure, threaded
connection that maintains signal integrity.
7. What is the maximum distance for a Cat 6 Ethernet cable run before
signal degradation requires a repeater or switch?
A. 50 meters (164 feet)
B. 100 meters (328 feet)
C. 150 meters (492 feet)
D. 200 meters (656 feet)
ANSWER: B. 100 meters (328 feet)
RATIONALE: The maximum distance for Cat 5e, Cat 6, and Cat 6A cable is
100 meters (328 feet). Beyond this distance, signal degradation occurs and
requires active equipment such as repeaters or switches.
8. Which device is used to connect multiple network devices on a local
area network and direct data traffic between them?
A. Modem
B. Router
C. Switch
D. Amplifier
ANSWER: C. Switch
RATIONALE: A switch manages and directs data traffic between devices
on a local area network. Unlike a hub, a switch intelligently forwards data only
to the intended recipient device.
