ISA/IEC 62443 Practice Question: A manufacturing plant has both safety instrumented systems (SIS) and... | CyberCertPrep

ISA/IECISA/IEC 62443IEC 62443: Zones, Conduits & Security LevelsEASYFree question

A manufacturing plant has both safety instrumented systems (SIS) and basic process control systems (BPCS). Should they be in the same zone?

A.Yes, they control the same process
B.No, SIS should be in a separate zone due to its higher security and safety requirements
C.It does not matter
D.Only if they use the same network

Why B is correct

Safety instrumented systems should be in a separate zone from BPCS due to their critical safety function and higher security requirements.

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Where this fits in the ISA/IEC 62443 exam

IEC 62443: Zones, Conduits & Security Levels

Zones and conduits partitioning model, security levels (SL 1-4), target vs. achieved vs. capability security levels.

This question belongs to the "Zones, Conduits & Security Levels" domain, which makes up about 20% of the ISA/IEC 62443 exam.

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A manufacturing plant has both safety instrumented systems (SIS) and basic process control systems (BPCS). Should they be in the same zone?

Where this fits in the ISA/IEC 62443 exam

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