CSC Access Control & Perimeter Security 2 — Questions and Answers
Question 1: A security consultant is assessing a facility that stores high-value assets. Which perimeter security layer provides the FIRST line of defense?
- Interior barriers
- Outer perimeter fencing (Correct answer)
- Guard posts at entry points
- CCTV surveillance systems
Correct answer: Outer perimeter fencing
The outer perimeter fencing forms the first layer of defense in a defense-in-depth perimeter security model.
Question 2: Which access control model grants permissions based on the sensitivity label of a resource and the clearance level of the subject?
- Discretionary Access Control (DAC)
- Role-Based Access Control (RBAC)
- Mandatory Access Control (MAC) (Correct answer)
- Attribute-Based Access Control (ABAC)
Correct answer: Mandatory Access Control (MAC)
Mandatory Access Control (MAC) uses sensitivity labels and clearance levels to enforce access decisions, commonly used in government and military systems.
Question 3: A 'mantrap' (airlock) entry system is PRIMARILY designed to prevent which security threat?
- Shoulder surfing
- Tailgating / piggybacking (Correct answer)
- Brute-force PIN attacks
- Social engineering phone calls
Correct answer: Tailgating / piggybacking
A mantrap prevents tailgating by ensuring only one person passes through a controlled entry at a time before the second door opens.
Question 4: When designing perimeter lighting for a secure facility, what is the recommended minimum foot-candle level for boundaries according to general security standards?
- 0.2 foot-candles
- 0.5 foot-candles
- 2 foot-candles (Correct answer)
- 5 foot-candles
Correct answer: 2 foot-candles
Security standards generally recommend at least 2 foot-candles of illumination along perimeter boundaries to deter and detect intrusions.
Question 5: Which type of fence topping provides the GREATEST deterrence against climbing at a minimum cost?
- Y-arms with three strands of barbed wire
- Razor wire coils (Correct answer)
- Electric fence toppers
- Anti-climb paint
Correct answer: Razor wire coils
Razor wire coils (concertina wire) provide greater deterrence than standard barbed wire because the razor edges inflict injury and are difficult to compress.
Question 6: In a biometric access control system, what does the term 'False Rejection Rate' (FRR) measure?
- The rate at which unauthorized users are granted access
- The rate at which authorized users are denied access (Correct answer)
- The threshold at which FAR equals FRR
- The percentage of enrolled users in the system
Correct answer: The rate at which authorized users are denied access
FRR (Type II error) measures how often a legitimate, enrolled user is incorrectly denied access by the biometric system.
Question 7: A security consultant recommends installing bollards at a building entrance. What is the PRIMARY security function of bollards?
- Controlling pedestrian flow through turnstiles
- Preventing vehicle-borne attacks against a structure (Correct answer)
- Providing perimeter lighting anchors
- Marking property boundaries visually
Correct answer: Preventing vehicle-borne attacks against a structure
Bollards are designed to stop or deflect vehicles, protecting buildings and people from vehicle ramming attacks.
CSC Access Control & Perimeter Security 2
A security consultant is assessing a facility that stores high-value assets.
Which perimeter security layer provides the FIRST line of defense?