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Exam ISA-IEC-62443 Topic 1 Question 125 Discussion

Actual exam question for ISA's ISA-IEC-62443 exam
Question #: 125
Topic #: 1
What does the expression SL-T (BPCS Zone) vector {2 2 0 1 3 1 3} represent?

Suggested Answer: D Vote an answer

ISA/IEC 62443 defines Security Level vectors to express Target Security Levels across the seven Foundational Requirements (FRs).
Step 1: SL-T definition
SL-T represents the Target Security Level determined from risk assessment.
Step 2: Vector meaning
Each number in the vector corresponds to the required SL for a specific FR (IAC, UC, SI, DC, RDF, TRE, RA).
Step 3: Zone-specific application
The vector is applied to a defined zone (e.g., BPCS), allowing granular security specification.
Thus, the vector represents SL values for a specific zone's foundational requirements.

by Genevieve at Aug 13, 2026, 11:31 AM

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