Low Voltage Systems Technician
Certification QUESTION AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A INSTANT
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1. What is the primary function of a low voltage system?
A) Heating a building
B) Transmitting data and controlling devices
C) Powering heavy machinery
D) Running water systems
Answer: B
Rationale: Low voltage systems are designed to transmit data, signals,
or control devices rather than provide primary power.
2. What voltage range typically defines a low voltage system?
A) 120–240V
B) 480–600V
C) 50V or less
D) 300–400V
Answer: C
Rationale: Low voltage systems are generally considered those
operating at 50 volts or less for safety and functional purposes.
, 3. Which tool is essential for testing low voltage circuits?
A) Pipe wrench
B) Sledgehammer
C) Multimeter
D) Saw
Answer: C
Rationale: A multimeter measures voltage, current, and resistance,
making it essential for low voltage work.
4. What is the purpose of a network switch in a low voltage system?
A) Store electrical energy
B) Connect multiple devices in a network
C) Protect circuits from overload
D) Convert AC to DC
Answer: B
Rationale: A network switch connects multiple devices, allowing
communication across a local area network.
5. What type of cable is commonly used for structured cabling?
A) Coaxial
B) Twisted pair (Cat5e/Cat6)
C) Fiberboard
D) Rubber-insulated wire
Answer: B
Rationale: Twisted pair cables are widely used in networking due to
their balance between speed, distance, and cost.
6. Which device converts digital signals to analog for transmission
over phone lines?
, A) Hub
B) Switch
C) Modem
D) Router
Answer: C
Rationale: Modems modulate and demodulate signals to allow digital
devices to communicate over analog systems.
7. What is the maximum recommended length for a Cat5e cable
run?
A) 50 feet
B) 1000 feet
C) 500 feet
D) 100 meters (328 feet)
Answer: D
Rationale: To maintain signal integrity, Cat5e cable runs should not
exceed 100 meters.
8. Which frequency range is standard for Wi-Fi 2.4 GHz networks?
A) 1–2 MHz
B) 2.4–2.4835 GHz
C) 5–6 GHz
D) 10–12 GHz
Answer: B
Rationale: The 2.4 GHz band for Wi-Fi operates from 2.4 to 2.4835 GHz
worldwide.
9. Which component is used to provide uninterrupted power to low
voltage devices?
, A) Generator
B) Transformer
C) UPS (Uninterruptible Power Supply)
D) Rectifier
Answer: C
Rationale: A UPS provides backup power and protects sensitive low
voltage equipment from outages.
10. What color wire is typically used for ground in low voltage
systems?
A) Red
B) Blue
C) Green or bare copper
D) Yellow
Answer: C
Rationale: Green or bare copper wires are universally used for
grounding circuits to ensure safety.
11. Which standard governs telecommunications cabling in
commercial buildings?
A) ISO 9001
B) TIA/EIA-568
C) NEC Article 310
D) UL 467
Answer: B
Rationale: TIA/EIA-568 sets the standard for structured cabling systems
in commercial environments.
Certification QUESTION AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A INSTANT
DOWNLOAD PDF
1. What is the primary function of a low voltage system?
A) Heating a building
B) Transmitting data and controlling devices
C) Powering heavy machinery
D) Running water systems
Answer: B
Rationale: Low voltage systems are designed to transmit data, signals,
or control devices rather than provide primary power.
2. What voltage range typically defines a low voltage system?
A) 120–240V
B) 480–600V
C) 50V or less
D) 300–400V
Answer: C
Rationale: Low voltage systems are generally considered those
operating at 50 volts or less for safety and functional purposes.
, 3. Which tool is essential for testing low voltage circuits?
A) Pipe wrench
B) Sledgehammer
C) Multimeter
D) Saw
Answer: C
Rationale: A multimeter measures voltage, current, and resistance,
making it essential for low voltage work.
4. What is the purpose of a network switch in a low voltage system?
A) Store electrical energy
B) Connect multiple devices in a network
C) Protect circuits from overload
D) Convert AC to DC
Answer: B
Rationale: A network switch connects multiple devices, allowing
communication across a local area network.
5. What type of cable is commonly used for structured cabling?
A) Coaxial
B) Twisted pair (Cat5e/Cat6)
C) Fiberboard
D) Rubber-insulated wire
Answer: B
Rationale: Twisted pair cables are widely used in networking due to
their balance between speed, distance, and cost.
6. Which device converts digital signals to analog for transmission
over phone lines?
, A) Hub
B) Switch
C) Modem
D) Router
Answer: C
Rationale: Modems modulate and demodulate signals to allow digital
devices to communicate over analog systems.
7. What is the maximum recommended length for a Cat5e cable
run?
A) 50 feet
B) 1000 feet
C) 500 feet
D) 100 meters (328 feet)
Answer: D
Rationale: To maintain signal integrity, Cat5e cable runs should not
exceed 100 meters.
8. Which frequency range is standard for Wi-Fi 2.4 GHz networks?
A) 1–2 MHz
B) 2.4–2.4835 GHz
C) 5–6 GHz
D) 10–12 GHz
Answer: B
Rationale: The 2.4 GHz band for Wi-Fi operates from 2.4 to 2.4835 GHz
worldwide.
9. Which component is used to provide uninterrupted power to low
voltage devices?
, A) Generator
B) Transformer
C) UPS (Uninterruptible Power Supply)
D) Rectifier
Answer: C
Rationale: A UPS provides backup power and protects sensitive low
voltage equipment from outages.
10. What color wire is typically used for ground in low voltage
systems?
A) Red
B) Blue
C) Green or bare copper
D) Yellow
Answer: C
Rationale: Green or bare copper wires are universally used for
grounding circuits to ensure safety.
11. Which standard governs telecommunications cabling in
commercial buildings?
A) ISO 9001
B) TIA/EIA-568
C) NEC Article 310
D) UL 467
Answer: B
Rationale: TIA/EIA-568 sets the standard for structured cabling systems
in commercial environments.
