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Question 1.Which of the following equations correctly represents Ohm’s Law? A) V = I × R B) I = V + R C) R = V – I D) P = V ÷ I Answer: A Explanation: Ohm’s Law states that voltage (V) equals current (I) multiplied by resistance (R). Question 2.What is the power dissipated by a device that draws 2 A at 120 V? A) 60 W B) 120 W C) 240 W D) 480 W Answer: C Explanation: Power P = V × I = 120 V × 2 A = 240 W. Question 3.In a series circuit containing three resistors of 10 Ω, 20 Ω, and 30 Ω, the total resistance is: A) 10 Ω B) 20 Ω C) 30 Ω D) 60 Ω Answer: D Explanation: Series resistances add directly: 10 + 20 + 30 = 60 Ω. Question 4.In a parallel circuit, two 100 Ω resistors are connected across a 120 V source. What is the total current drawn? A) 0.6 A B) 1.2 A C) 2.4 A D) 4.8 A Answer: B
Explanation: Equivalent resistance R_eq = (100 × 100)/(100+100)=50 Ω. I = V/R = 120/50 = 2.4 A. (Correction: 120/50 = 2.4 A, answer should be C). Question 5.Which multimeter function is used to verify continuity of a wiring run? A) Voltage AC B) Resistance (Ω) C) Continuity beep mode D) Current DC Answer: C Explanation: The continuity setting emits a beep when low resistance (continuous path) is detected. Question 6.What type of resistor is typically installed at the end of a zone wire to provide supervision? A) Pull-up resistor B) End-of-Line (EOL) resistor C) Thermistor D) Shunt resistor Answer: B Explanation: EOL resistors create a known load that the control panel monitors for opens or shorts. Question 7.A capacitor in a power supply primarily serves to: A) Increase current flow B) Store charge for voltage smoothing C) Convert AC to DC D) Provide resistance Answer: B Explanation: Capacitors filter ripple and smooth the DC output after rectification. Question 8.Which component allows current to flow in only one direction in a low-voltage alarm power supply? A) Transformer B) Diode
Question 12.What is the primary communication method used by most residential alarm panels to send alerts to a monitoring station? A) Bluetooth B) POTS (Plain Old Telephone Service) C) Satellite radio D) ZigBee Answer: B Explanation: Traditional panels use the telephone line (POTS) as a reliable backup path. Question 13.A dual-technology motion detector combines PIR with which other sensing method? A) Ultrasonic B) Microwave (Doppler) C) Infrared laser D) Magnetic reed switch Answer: B Explanation: Dual-tech detectors use PIR and microwave to reduce false alarms. Question 14.Which type of magnetic contact is best suited for a door with a 2 - inch gap? A) Surface-mount contact B) Recessed contact C) Wide-gap contact D) Glass-break contact Answer: C Explanation: Wide-gap contacts are designed for larger separations, up to 2 inches. Question 15.A glass-break detector that uses an acoustic sensor primarily detects: A) Vibration of the pane B) Light intensity change C) Sound frequency of breaking glass
D) Temperature rise Answer: C Explanation: Acoustic detectors sense the characteristic frequency pattern of breaking glass. Question 16.Which local notification appliance provides both audible and visual alerts? A) Siren B) Strobe light C) Siren-strobe combo D) Keypad tone Answer: C Explanation: A siren-strobe unit combines sound and flashing light for accessibility. Question 17.What is the standard method for remotely arming a system via a smartphone? A) NFC tap B) IP-based mobile app with encrypted TLS C) SMS text command D) Infrared remote control Answer: B Explanation: Modern systems use secure IP communication over the internet with TLS encryption. Question 18.Ionization smoke detectors are most sensitive to: A) Smoldering fires B) Fast-flaming fires C) Carbon monoxide D) Heat spikes Answer: B Explanation: Ionization chambers detect small particles typical of flaming fires. Question 19.Photoelectric smoke detectors excel at detecting:
Explanation: NFPA 72 is the National Fire Alarm and Signaling Code. Question 23.A multiple-station fire alarm system allows: A) Only one panel to control alarms B) Two or more panels to share alarm information C) No interconnection of devices D) Direct connection to the utility grid only Answer: B Explanation: Multiple-station systems synchronize alarms across several control panels. Question 24.Which device provides a manual method to initiate a fire alarm in a public building? A) Heat detector B) Smoke detector C) Pull-station D) Carbon monoxide sensor Answer: C Explanation: A manual pull-station is a user-operated alarm activation point. Question 25.What type of alarm notification appliance is required to be “visible” for the hearing-impaired according to NFPA 72? A) Siren only B) Strobe only C) Both siren and strobe D) Voice evacuation system Answer: B Explanation: Strobe lights provide visual alerts for those who cannot hear the siren. Question 26.Which surveillance camera type converts analog video signals to digital for storage? A) IP camera B) Analog CCTV camera with DVR
C) Thermal camera D) PTZ camera Answer: B Explanation: Analog cameras output a continuous signal that a DVR digitizes and stores. Question 27.What does “PTZ” stand for in video surveillance terminology? A) Pan-Tilt-Zoom B) Private-Transmission-Zone C) Pixel-Tracking-Zone D) Power-Thermal-Zoom Answer: A Explanation: PTZ cameras can pan, tilt, and zoom under remote control. Question 28.A 1080p IP camera records video at what resolution? A) 720 × 480 B) 1280 × 720 C) 1920 × 1080 D) 3840 × 2160 Answer: C Explanation: 1080p corresponds to 1920 × 1080 pixels. Question 29.What transmission medium offers the highest bandwidth for CCTV video over long distances? A) Coaxial cable (RG-59) B) Category 5e UTP C) Fiber-optic cable D) Powerline carrier Answer: C Explanation: Fiber-optic can carry multi-gigabit signals with minimal loss over many kilometers.
C) Class C – Electronic protection D) Class D – Fire alarm systems Answer: C Explanation: Class C covers electronic protection systems, including battery-charged fences. Question 34.What is the maximum voltage allowed on a Class 2 circuit under NEC definitions? A) 30 V AC/DC B) 50 V AC / 30 V DC C) 60 V AC/DC D) 120 V AC Answer: B Explanation: Class 2 circuits are limited to 30 V DC or 50 V AC. Question 35.Which NEC article specifically addresses low-voltage remote-control and signaling circuits? A) Article 210 B) Article 300 C) Article 725 D) Article 800 Answer: C Explanation: NEC Article 725 covers Class 1, 2, and 3 circuits for remote control and signaling. Question 36.What is the primary purpose of separating low-voltage (LV) and high-voltage (HV) wiring in a conduit? A) Reduce material cost B) Prevent electromagnetic interference and meet fire safety codes C) Simplify labeling D) Increase conduit fill capacity Answer: B Explanation: Separation minimizes EMI and satisfies NEC fire-safety requirements.
Question 37.Which type of cable is required for installation in a plenum space? A) CMP (Plenum-rated) B) CMR (Riser-rated) C) CMX (Outdoor) D. UF (Underground) Answer: A Explanation: Plenum-rated (CMP) cables have low-smoke, fire-retardant jackets suitable for air-handling spaces. Question 38.What does STP stand for in cabling terminology? A) Shielded Twisted Pair B) Standard Transmission Protocol C) Single-Threaded Pipe D) Secure Transfer Path Answer: A Explanation: STP cables have a shielding braid to reduce electromagnetic interference. Question 39.How often must a UTP cable be stapled when installed in a wall cavity according to NEC? A) Every 2 ft B) Every 4 ft C) Every 6 ft D) Every 12 ft Answer: B Explanation: NEC requires securing cables at intervals not exceeding 4 ft (1.2 m). Question 40.Which of the following is a legal requirement for alarm verification before contacting law enforcement in Mississippi? A) Immediate dispatch without verification B) Visual confirmation of alarm cause per ANSI/CSAA CS-V- 01 C) Only a verbal confirmation from the homeowner
Question 44.What is the primary function of a “supervision” circuit in a security panel? A) Provide power to devices B) Detect open or short circuits on zone wires C) Transmit audio alerts D) Control siren volume Answer: B Explanation: Supervision monitors the integrity of zone wiring using resistive loads. Question 45.In a dual-technology motion detector, a false alarm caused by a pet is most likely prevented by which feature? A) Increased PIR sensitivity B) Microwave dead-zone programming C) Integrated pet-immune algorithm D) Lowered detection range Answer: C Explanation: Many dual-tech detectors include pet-immune processing to ignore small moving objects. Question 46.What is the typical voltage rating for a standard door/window magnetic contact when used with a 12 V alarm panel? A) 5 V B) 12 V C) 24 V D) 48 V Answer: B Explanation: Most contacts are designed to operate at the panel’s supply voltage, commonly 12 V DC. Question 47.Which of the following best describes a “wide-gap” magnetic contact’s installation advantage? A) Allows mounting on thin metal doors
B) Requires no alignment during installation C) Can be installed on doors with larger separation distances D) Provides higher resistance to tampering Answer: C Explanation: Wide-gap contacts are engineered for larger air gaps, up to about 2 inches. Question 48.A “recessed” magnetic contact is typically installed: A) On the surface of a door frame B) Inside a mortised pocket in the frame for concealment C) On a glass pane D) On a sliding door track Answer: B Explanation: Recessed contacts are set into a pocket, making them less visible. Question 49.What is the purpose of a “keypad tone” in an alarm system? A) To alert intruders of system status B) To provide audible feedback to the user during arming/disarming C) To trigger the siren automatically D) To power the keypad via audio signal Answer: B Explanation: Tone feedback confirms button presses and system status to the user. Question 50.Which protocol is most commonly used for IP-based video transmission in modern CCTV installations? A) HTTP B) RTSP (Real-Time Streaming Protocol) C) FTP D) SMTP Answer: B Explanation: RTSP facilitates real-time streaming of video over IP networks.
C) Ability to convey specific instructions and overcome language barriers D) Reduced power consumption Answer: C Explanation: Voice messages can give clear instructions and be recorded in multiple languages. Question 55.Which of the following is a requirement for a “Class 3” circuit under NEC Article 725? A) Must be limited to 30 VA B) Must be powered from a dedicated transformer C) Must be used for fire alarm signaling only D) Must be limited to 150 V AC or DC Answer: D Explanation: Class 3 circuits may operate up to 150 V and are used for low-power signaling. Question 56.What is the typical maximum current rating for a 22-AWG solid copper conductor used in low-voltage alarm wiring? A) 0.5 A B) 1 A C) 3 A D) 5 A Answer: C Explanation: 22-AWG copper can safely carry about 3 A in low-voltage applications. Question 57.Which type of cable is most appropriate for running a 24 V DC power feed to an outdoor motion detector? A) Plenum-rated CMP cable B) Outdoor-rated UF cable C) Standard CAT-5e unshielded cable D) Coaxial RG-6 cable Answer: B
Explanation: UF (Underground Feeder) cable is designed for wet, outdoor environments. Question 58.What does the “AC” in “AC power” stand for? A) Alternating Current B) Automatic Control C) Auxiliary Circuit D) Active Charge Answer: A Explanation: AC denotes current that periodically reverses direction. Question 59.What is the purpose of a “pull-up resistor” on a digital input line of an alarm panel? A) To increase voltage across the line B) To ensure the line reads a defined high logic level when no device is active C) To limit current to the input D) To provide a ground reference Answer: B Explanation: A pull-up resistor pulls the line to a known high voltage, preventing floating inputs. Question 60.In a “two-wire” door sensor configuration, how many conductors are required to monitor the door state? A) One B) Two C) Three D) Four Answer: B Explanation: Two wires carry both the power and the signal for a simple magnetic contact. Question 61.What is the typical response time for a PIR motion detector to recover after detecting motion? A) 0.5 seconds
Explanation: IP66 indicates complete protection against dust and strong water jets. Question 65.What is the main benefit of using “STP” cable for a long-run video signal in an electrically noisy environment? A) Lower cost B) Reduced electromagnetic interference (EMI) C) Higher bandwidth than fiber D) Easier termination Answer: B Explanation: Shielded Twisted Pair reduces EMI, preserving signal integrity. Question 66.In the context of alarm system fault codes, “E- 123 ” typically indicates: A) Low battery voltage B) Zone tamper C) Power supply failure D) Communication loss with central station Answer: B Explanation: Many panels use “E- 123 ” (or similar) to denote a tamper condition on a zone. Question 67.What is the purpose of a “keypad beeper” in an alarm system? A) To alert intruders B) To provide audible confirmation of user input and system status C) To power the keypad D) To trigger the siren automatically Answer: B Explanation: The beeper gives feedback to the user when buttons are pressed. Question 68.Which of the following is a legal requirement for a “battery-charged security fence” installation in Mississippi? A) Must be installed only on residential properties B) Must be grounded and posted with warning signs as per state statutes
C) Must use a Class 1 circuit only D) No specific legal requirements exist Answer: B Explanation: Mississippi law mandates grounding and signage for battery-charged fences. Question 69.What does “NFPA 101” primarily address? A) Electrical wiring methods B) Life safety code for building construction and occupancy C) Fire alarm system design D) Hazardous materials handling Answer: B Explanation: NFPA 101 is the Life Safety Code covering building construction, egress, and fire protection. Question 70.A “dual-technology” glass-break detector combines acoustic detection with which other method? A) Vibration sensor B) Infrared beam C) Magnetic reed switch D) Photoelectric sensor Answer: A Explanation: Some dual-tech glass-break devices pair acoustic detection with a vibration sensor to improve reliability. Question 71.In a typical residential alarm system, the “stay” arming mode: A) Arms all doors and windows B) Arms only perimeter doors and windows, leaving interior motion sensors off C) Disarms the entire system D) Only arms motion sensors, not door/window contacts Answer: B Explanation: “Stay” mode secures the perimeter while occupants move freely inside.
