Physical Security Controls and Their Purposes for A+
Short answer
Physical security controls focus on preventing and detecting unauthorized physical access and protecting physical assets. Start by identifying the threat: vehicle impact, perimeter intrusion, unauthorized human entry, equipment theft, or need for monitoring. Then select the control type that best addresses that threat. Prevention controls block access (bollards, fences, locks); deterrence and detection controls monitor or alert (video surveillance, motion sensors, alarm systems); human controls verify and respond (security guards); credential devices regulate entry (badge readers in vestibules).
Why it appears on the exam
- Given a short support scenario, choose the physical control that best mitigates the named risk (vehicle intrusion, theft, tailgating, perimeter breach, monitoring need). - Distinguish between detection (motion sensor, alarm) and prevention (fence, bollards, locks).
Key concepts
Concept 1
Required terms
bollards: Sturdy posts or barriers placed to prevent or reduce vehicle intrusion into a protected area. access control vestibule: A small controlled entry chamber with two successive doors that control and slow access to an interior secure area. badge reader: A device that reads an encoded credential on a badge or card to grant or deny door entry. video surveillance: Cameras and recording systems used for monitoring, deterrence, and evidence collection.
Example
Vehicle ramming risk at an office entrance -> bollards.
Concept 2
How Physical Security Controls and Their Purposes works
Physical security controls focus on preventing and detecting unauthorized physical access and protecting physical assets. Start by identifying the threat: vehicle impact, perimeter intrusion, unauthorized human entry, equipment theft, or need for monitoring. Then select the control type that best addresses that threat. Prevention controls block access (bollards, fences, locks); deterrence and detection controls monitor or alert (video surveillance, motion sensors, alarm systems); human controls verify and respond (security guards); credential devices regulate entry (badge readers in vestibules).
Example
A secure server room where tailgating is a concern -> access control vestibule or badge reader with anti-tailgate policy.
Concept 3
Common confusion
Learners often confuse monitoring with prevention. Video surveillance records events and deters, but does not physically stop a thief. They may also confuse physical door locks with logical access controls for files and systems; these are separate categories.
Example
Overnight monitoring of a campus area -> video surveillance with motion detection.
Concept 4
Core 2 (220-1202) question cues
Given a short support scenario, choose the physical control that best mitigates the named risk (vehicle intrusion, theft, tailgating, perimeter breach, monitoring need); Distinguish between detection (motion sensor, alarm) and prevention (fence, bollards, locks).
Example
Public kiosk needing to prevent theft of a laptop -> equipment lock (cable lock) at the kiosk.
Sample questions
Select an answer to reveal the explanation. For tracked practice and weak-area review, use the Cultiv8 app.
Q1.An A+ support scenario describes this situation: Vehicle ramming risk at an office entrance -> bollards. Which answer fits best?
Q2.A technician sees this situation: A secure server room where tailgating is a concern -> access control vestibule or badge reader with anti-tailgate policy. Which answer should they choose?
Q3.Read this A+ scenario: A secure server room where tailgating is a concern -> access control vestibule or badge reader with anti-tailgate policy. Which term or action matches it?
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