CO Security Systems Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. What is the primary purpose of a security system control panel?
A. To provide decorative lighting
B. To store construction materials
C. To receive, process, and manage signals from security devices
D. To regulate building temperature
Rationale: The control panel is the central processing unit of a security
system. It receives signals from sensors and initiating devices,
processes those signals according to programmed settings, and
communicates alarms or other conditions to appropriate notification
or monitoring equipment.
2. Which device is commonly used to detect unauthorized opening
of a door or window?
,A. Smoke detector
B. Magnetic contact
C. Heat detector
D. Transformer
Rationale: A magnetic contact consists of a switch and magnet
installed on a movable opening and its frame. When the door or
window opens, the magnetic relationship changes and the switch
changes state, allowing the security system to identify the opening.
3. What is the main function of a motion detector in a security
system?
A. Measure electrical voltage
B. Detect water pressure
C. Detect movement within a protected area
D. Control sprinkler flow
Rationale: Motion detectors are designed to identify movement
within a defined coverage area. Depending on the technology, they
may detect changes in infrared energy, microwave reflections, or
other characteristics associated with movement.
4. Which type of detector commonly uses passive infrared
technology?
,A. Glass-break detector
B. Door contact
C. PIR motion detector
D. Magnetic lock
Rationale: Passive infrared (PIR) detectors sense changes in infrared
radiation caused by movement through their field of view. They are
widely used for interior intrusion detection.
5. What is the purpose of an end-of-line resistor in a supervised
security circuit?
A. Increase the alarm sound
B. Increase transformer capacity
C. Allow the control panel to monitor circuit integrity
D. Convert AC power to DC power
Rationale: An end-of-line resistor allows a supervised circuit to be
monitored for conditions such as normal operation, open circuits, and
sometimes short circuits. The control panel recognizes expected
resistance values and can identify wiring faults.
6. A normally closed security circuit is in what condition when the
protected door is closed and the system is normal?
, A. Open circuit
B. Closed circuit
C. Grounded circuit
D. Shorted power supply
Rationale: In a normally closed configuration, the circuit remains
electrically continuous during normal conditions. Opening the
protected door changes the circuit state, which the control panel
interprets as an alarm or supervisory condition depending on
programming.
7. What is a common advantage of supervised security circuits?
A. They eliminate the need for sensors
B. They eliminate all false alarms
C. They can detect certain wiring faults
D. They eliminate backup batteries
Rationale: Supervision allows the control panel to monitor the
condition of field wiring. Depending on the circuit design, an open,
short, or other abnormal resistance condition can be detected and
reported.
8. Which device is typically used to detect the sound or vibration
associated with breaking glass?
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. What is the primary purpose of a security system control panel?
A. To provide decorative lighting
B. To store construction materials
C. To receive, process, and manage signals from security devices
D. To regulate building temperature
Rationale: The control panel is the central processing unit of a security
system. It receives signals from sensors and initiating devices,
processes those signals according to programmed settings, and
communicates alarms or other conditions to appropriate notification
or monitoring equipment.
2. Which device is commonly used to detect unauthorized opening
of a door or window?
,A. Smoke detector
B. Magnetic contact
C. Heat detector
D. Transformer
Rationale: A magnetic contact consists of a switch and magnet
installed on a movable opening and its frame. When the door or
window opens, the magnetic relationship changes and the switch
changes state, allowing the security system to identify the opening.
3. What is the main function of a motion detector in a security
system?
A. Measure electrical voltage
B. Detect water pressure
C. Detect movement within a protected area
D. Control sprinkler flow
Rationale: Motion detectors are designed to identify movement
within a defined coverage area. Depending on the technology, they
may detect changes in infrared energy, microwave reflections, or
other characteristics associated with movement.
4. Which type of detector commonly uses passive infrared
technology?
,A. Glass-break detector
B. Door contact
C. PIR motion detector
D. Magnetic lock
Rationale: Passive infrared (PIR) detectors sense changes in infrared
radiation caused by movement through their field of view. They are
widely used for interior intrusion detection.
5. What is the purpose of an end-of-line resistor in a supervised
security circuit?
A. Increase the alarm sound
B. Increase transformer capacity
C. Allow the control panel to monitor circuit integrity
D. Convert AC power to DC power
Rationale: An end-of-line resistor allows a supervised circuit to be
monitored for conditions such as normal operation, open circuits, and
sometimes short circuits. The control panel recognizes expected
resistance values and can identify wiring faults.
6. A normally closed security circuit is in what condition when the
protected door is closed and the system is normal?
, A. Open circuit
B. Closed circuit
C. Grounded circuit
D. Shorted power supply
Rationale: In a normally closed configuration, the circuit remains
electrically continuous during normal conditions. Opening the
protected door changes the circuit state, which the control panel
interprets as an alarm or supervisory condition depending on
programming.
7. What is a common advantage of supervised security circuits?
A. They eliminate the need for sensors
B. They eliminate all false alarms
C. They can detect certain wiring faults
D. They eliminate backup batteries
Rationale: Supervision allows the control panel to monitor the
condition of field wiring. Depending on the circuit design, an open,
short, or other abnormal resistance condition can be detected and
reported.
8. Which device is typically used to detect the sound or vibration
associated with breaking glass?
