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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Module 3 Questions And Answers
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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Module 3 Questions And Answers
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ISA/IEC 62443 Cybersecurity Fundamentals SpecialistModule 3 Questions And Answers
REFERENCD MODEL levels (ISA 95) ANS Five levels. Level0 to Level4
ISA 95 - Level4 ANS business planning and logistics
ISA95 - Level3 ANS Manufacturing Operations Management
ISA95 - Level2 ANS Supervisory Control (monitoring and controling like temp control, pressure
control)
ISA95 - Level1 ANS Local or Basic Control (sensors, boiler, furnace...)
ISA95 - Level0 ANS Actual production process or actual physical process
The ISA-99 committee took ANS the ISA-95 Purdue model (Reference model)
IACS cybersecurity lifecycle ANS Assess, Develop and Implement, Maintain
Assess phase ANS Zones are assigned SL-T based on risk assessment
Develop and implement phase ANS countermeasures are applied to meet the SL-T
maintain phase ANS countermeasures are audited and/or tested and upgraded, if necessary, to
reach and maintain the SL-A
Assess phase in turn divided into (IC33 course) ANS Initial or high level risk assessment(part 3-
2), Allocation of assets to zones or conduits (part 3-2), Detailed risk assessment (part 3-2)
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