Performance Requirements, Design Constraints, CPTED, and Defense-in-Depth
Design questions test converting assessment results into operational, functional, and performance requirements.
How to study for ASIS PSP
Use the ASIS PSP Body of Knowledge as the map: assess assets and risk, design integrated physical security systems, then manage implementation and life-cycle performance.
Core concepts
Concept 1
Performance Requirements, Design Constraints, CPTED, and Defense-in-Depth questions reward the answer that follows the official source, the professional role, and the stated facts.
Exam cue: Identify the candidate role, client or public risk, source rule, calculation, or process step being tested.
Concept 2
The strongest answer identifies the rule, safety concern, ethical duty, calculation, client factor, or process step before acting.
Exam cue: Check whether the fact pattern is using a national standard, jurisdiction rule, handbook policy, or scenario-specific instruction.
Concept 3
Eliminate answers that ignore requirements, skip documentation, overreach the role, or treat convenience as the standard.
Exam cue: Choose the compliant and professionally scoped answer before the convenient or familiar answer.
Risk pitfalls and guardrails
Treating related standards as interchangeable without checking the source.
Guardrail: Avoid answers that rely only on habit, ignore the stated source, skip safety or compliance steps, or choose convenience over the professional standard.
Skipping screening, documentation, authorization, sanitation, recordkeeping, or other required procedure.
Guardrail: Avoid answers that rely only on habit, ignore the stated source, skip safety or compliance steps, or choose convenience over the professional standard.
Choosing an answer that protects convenience instead of client safety, public protection, or the stated professional duty.
Guardrail: Avoid answers that rely only on habit, ignore the stated source, skip safety or compliance steps, or choose convenience over the professional standard.
Memory anchors
Performance Requirement
A performance requirement states the measurable capability the security system must achieve.
Design Constraint
A design constraint limits options through budget, regulation, material, compatibility, or site conditions.
Operational Requirement
An operational requirement describes how people and procedures must use the system.
Functional Requirement
A functional requirement describes what a system must do.
CPTED
Crime prevention through environmental design uses layout, visibility, access, and maintenance to reduce crime opportunity.
Defense In Depth
Defense-in-depth layers controls so one failure does not defeat the entire security design.
Four Ds
The four Ds are deter, detect, delay, and deny.
Success Metric
A success metric shows whether the design meets the intended security requirement.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A team begins design by selecting a camera model before defining what operators must see. What should happen first?
Which statement is a performance requirement rather than a prescriptive specification?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
What is Pass Harbor?
Completely free exam prep for 317 U.S. exams.
- Practice questions
- Flashcards
- Study guides
- Mock exams
- No registration
- No paywall
- Start instantly
“No more expensive exam prep. Quality study tools should be accessible to everyone.”