QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A | INSTANT DOWNLOAD PDF
1. Which of the following is the primary purpose of a low-voltage
system?
a. Deliver high-current power
b. Support structural integrity
c. Transmit data, voice, or signal communications
d. Provide HVAC control
Rationale: Low-voltage systems are designed for communications,
signaling, and control rather than high-current power delivery.
2. The maximum voltage typically considered “low voltage” in Georgia
for a technician license is:
a. 120 V
b. 240 V
c. 50 V
d. 12 V
Rationale: Low-voltage systems for licensing purposes generally operate
at 50 volts or less.
3. Which type of cable is commonly used for structured data
networks?
,a. Coaxial cable
b. Category 5e/6 twisted pair cable
c. NM-B electrical cable
d. Romex cable
Rationale: Cat 5e and Cat 6 twisted pair cables are standard for data
networking in commercial and residential low-voltage systems.
4. What is the purpose of a plenum-rated cable?
a. Easier installation
b. Lower cost
c. Reduced smoke and flame propagation in air-handling spaces
d. Higher bandwidth
Rationale: Plenum-rated cables are required in spaces where air
circulates for heating, ventilation, or air conditioning to minimize smoke
and flame spread in case of fire.
5. Which device converts analog signals into digital signals for
transmission?
a. Switch
b. Hub
c. Analog-to-digital converter (ADC)
d. Router
Rationale: ADCs convert analog signals into digital signals for processing
and transmission over digital networks.
6. In a residential security system, which device detects motion?
a. Siren
b. Control panel
, c. PIR sensor
d. Keypad
Rationale: Passive Infrared (PIR) sensors detect motion by sensing
changes in infrared energy.
7. Which standard defines network cabling performance?
a. NEC
b. OSHA
c. TIA/EIA
d. UL
Rationale: TIA/EIA standards define telecommunications cabling and
network performance requirements.
8. Which tool is used to test the continuity of a cable?
a. Crimper
b. Punch-down tool
c. Multimeter
d. Fish tape
Rationale: A multimeter can check for continuity, resistance, and other
electrical properties in cables.
9. The primary function of a network switch is to:
a. Convert analog to digital
b. Amplify signals
c. Forward data packets to specific devices
d. Measure voltage
Rationale: A network switch directs packets to the correct device using
MAC addresses.