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Questions and Answers
What is the primary advantage of using foot rail activators in banks?
How do bill traps or currency activation devices function?
In what scenario are knee or thigh buttons most effective?
What distinguishes double squeeze buttons from other alarm activation methods?
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What is a central station system in alarm detection?
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What type of locations typically utilize direct wire systems?
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What is the role of the operator at a central station?
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How many alarm transmitters can a circuit party system connect to a single receiving panel?
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What is the primary purpose of a top guard on perimeter fences?
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Why should bodies of water not be considered adequate perimeter barriers?
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What role do guard control stations serve in perimeter security?
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What is the psychological effect of guard towers in perimeter security?
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What is the primary function of protective lighting in a security system?
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Which of the following does NOT describe perimeter guards?
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What is the importance of signs in a security perimeter?
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What function does perimeter lighting serve when combined with guards?
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What is the primary goal of physical security measures?
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Why is it stated that there is 'no impenetrable barrier' in physical security?
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What does the principle of 'defense in depth' emphasize?
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What is the greatest hazard in terms of counterintelligence security?
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Which of the following is NOT a characteristic of physical barriers?
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Why must security procedures be customized for each installation?
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What is the primary function of an Intrusion Detection System (IDS)?
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What is the difference between surreptitious and non-surreptitious entry?
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Which of the following is a limitation of a Perimeter Intrusion Detection System (PIDS)?
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What do physical security measures primarily protect against?
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What type of system uses a microwave beam established between a transmitter and a receiver?
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Which intrusion detection method involves coaxial cables buried underground?
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What do vibration sensors specifically indicate?
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How does an infrared detector primarily detect movement?
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What is a disadvantage of an Intrusion Detection System?
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What is a key challenge for the effectiveness of an intrusion detection system?
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What is the primary purpose of a local alarm-by-chance system?
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What is a significant drawback of a dial alarm system?
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Which component is NOT one of the three basic parts of an alarm system?
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What characteristic is important for an intrusion alarm system to exhibit?
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Where is perimeter protection primarily applied in a security context?
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How do indoor detection devices typically function?
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Which of the following is a feature that should be included in a reliable alarm system?
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What is the primary purpose of motion detectors in an alarm system?
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Study Notes
Physical Security
- Physical security is the system of barriers between intruders and the protected assets.
- It aims to prevent unauthorized access, espionage, sabotage, damage, and theft.
- Safeguarding personnel from criminal acts is also included in physical security.
Principles of Physical Security
- Physical measures are essential to deny unauthorized access due to persistent threats.
- Enemy agents actively seek information, and no barrier is truly impenetrable.
- Defense-in-depth involves multiple barriers to enhance security.
- Surreptitious entries are difficult to detect and pose greater security risks.
- Each installation has unique challenges and requires tailored security measures.
Barriers Defined
- Barriers are physical structures that restrict, deter, or prevent unauthorized access.
- Building walls, fences, and bodies of water serve as perimeter barriers.
- Bodies of water alone are insufficient as primary barriers.
Additional Protective Measures
- Top guard is an overhang barbed wire placed on the perimeter fences for added security.
- Guard control stations are manned posts at perimeter entrances for surveillance.
- Towers provide psychological deterrence and improve visibility.
- Signs and notices convey information, directions, and warnings.
Perimeter Guard
- Fixed post guards are stationed at specific locations within the compound.
- Patrol guards actively move around the premises for regular surveillance.
Security & Protective Lighting
- Lighting provides illumination for identifying persons or objects and acts as a deterrent.
- Perimeter lighting is an essential part of security systems, working alongside fences and guards.
Purposes of Protective Lighting
- Provides sufficient illumination during hours of darkness.
- Improves visibility for guards and intruder identification.
- Creates a psychological deterrent against intrusion.
Importances of Protective Lighting
- Serves as a deterrent to violators.
- Assists the security force in surveillance and apprehension.
Intrusion Alarms
- Alarms are activated by various methods to alert security personnel.
- Foot rail activators allow tellers to trigger an alarm without raising suspicion.
- Bill traps are placed in teller drawers and trigger alarms when currency is removed.
- Knee or thigh buttons are activated with pressure for discreet alarm activation.
- Foot buttons provide safe activation with hands in view of the intruder.
- Double squeeze buttons require pressure on both sides to minimize accidental activation.
Types of Alarm Detection System
- Central Station System: Connects to a remote panel at a private owned protection Service Company. Alarm signal is transmitted over telephone lines.
- Local Alarm-By-Chance System: Sounds a bell or siren for a local response.
- Dial Alarm System: Automatically dials a preset number when activated, with a recording of intrusion.
Three Parts of an Alarm System
- Sensor or Trigger Device: Detects the intrusion.
- Circuits: Carry messages to the signaling apparatus.
- Signaling System: Communicates the alarm.
Desirable Characteristics of Intrusion Alarm Systems
- Able to be activated by human personnel.
- Provides audible and visual signals, indicating the location of the incident.
- Has a fail-safe feature that signals when a system malfunction occurs.
- Difficult to tamper with or disable.
- Monitoring console with operational controls, with wireless or wired transmission.
Perimeter Protection
- First line of defense against intruders.
- Intrusion alarm devices are placed on doors, windows, vents, skylights, and other openings.
- This type of protection is crucial as most break-ins occur through these openings.
Area and Space Protection
- Detects intrusions inside the building.
- Indoor detection devices utilize motion detectors.
- Motion detectors use infrared or microwave technology to detect movement.
Intrusion Detection System (IDS)
- Electronic devices used for detecting entry or attempted entry of intruders.
- Provides 24-hour surveillance, reducing the need for constant patrolling.
- Can be used with closed-circuit television (CCTV) systems.
Limitations of IDS
- Susceptible to circumvention if not carefully selected or installed.
- May have high false alarm rates.
- Requires skilled maintenance.
Perimeter Intrusion Detection System (PIDS)
- Electronic devices used to detect entry or attempted entry across the outer perimeter.
- Offers similar advantages as IDS.
Limitations of PIDS
- Prone to high false alarm rates.
- Expensive to install and maintain.
- Vulnerable to deliberate alarming.
- Can be bypassed by knowledgeable intruders.
Types of Perimeter Intrusion Detection System (PIDS)
- Linear Microwave System: Uses a microwave beam between a transmitter and receiver, covering distances of up to 150 meters.
- Radiating Cable System: Coaxial cables are buried 2 meters apart, with radio frequency transmitted through apertures. Intrusions disrupt the frequency field, triggering an alarm.
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Vibration Sensors: Detects forced entry through walls, ceilings, doors, and other rigid structures.
- Inertia Switches: A ball inside a capsule moves with vibration, breaking electrical contacts.
- Geophones: A spring-loaded magnet moves relative to a coil, inducing a current when vibration occurs.
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Description
Test your knowledge on physical security principles and barriers designed to protect assets from unauthorized access. This quiz covers essential concepts including defense-in-depth and tailored security measures for unique installations. Assess your understanding of various physical measures and the importance of barriers in ensuring safety.
