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ISA 62443 IC33 – ALL EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ $10.49
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ISA 62443 IC33 – ALL EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/
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ISA 62443 IC33 – ALL EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ What is the purpose of assigning a Target Security Level (SL-T) during the Assess phase of ICS security implementation? - -To determine the existing vulnerabilities of the system. What happens during the Develop & Implement ...

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  • April 11, 2024
  • 28
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • isa 62443 ic33 all exam review questions and

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1 ISA 62443 IC33 – ALL EXAM REVIEW QUESTIONS AND
ANSWERS, GRADED A+/



What is the purpose of assigning a Target Security Level (SL-T) during the Assess phase of ICS security
implementation? - ✅✅-To determine the existing vulnerabilities of the system.



What happens during the Develop & Implement phase of ICS security implementation? - ✅✅-
Countermeasures are implemented to meet the Target Security Level (SL-T).



What is the primary goal of the Maintain phase in ICS security implementation? - ✅✅-To ensure the
Achieved Security Level (SL-A) is equal to or better than the Target Security Level (SL-T).*



What is phase 1 of the IACS Cybersecurity Life Cycle? - ✅✅-Assess



What is phase 2 of the IACS Cybersecurity Life Cycle? - ✅✅-Develop & Implement



What is phase 3 of the IACS Cybersecurity Life Cycle? - ✅✅-Maintain phase



What is step 1 of the IACS Cybersecurity Life Cycle (Assess Phase)? - ✅✅-High-Level Cyber Risk
Assessment



What is step 2 of the IACS Cybersecurity Life Cycle (Assess Phase)? - ✅✅-Allocation of IACS Assets to
Security Zones or Conduits



What is step 3 of the IACS Cybersecurity Life Cycle (Assess Phase)? - ✅✅-Detail Cyber Risk Assessment



What is step 4 of the IACS Cybersecurity Life Cycle (Develop & Implement Phase)? - ✅✅-Cybersecurity
Requirements Specification

,What is step 5 of the IACS Cybersecurity Life Cycle (Develop & Implement Phase)? - ✅✅-Design and
engineering of Cybersecurity countermeasures



What is step 6 of the IACS Cybersecurity Life Cycle (Develop & Implement Phase)? - ✅✅-Installation,
commissioning and validation of Cybersecurity countermeasures



What is step 7 of the IACS Cybersecurity Life Cycle (Maintain)? - ✅✅-Cybersecurity Maintenance,
Monitoring and Management of Change



What is step 8 of the IACS Cybersecurity Life Cycle (Maintain)? - ✅✅-Cyber Incident Response &
Recovery



What are the continuous processes activities of the IACS Cybersecurity Life Cycle? - ✅✅-Cybersecurity
Management System: Policies, Procedures, Training & Awareness, Periodic Cybersecurity Audits



What must be done before an assessment can be started? - ✅✅-Create a Project Plan

ID Steps of the Project to perform the assessment

ID the System Under Assessment



System Under Consideration (SUC) - ✅✅-The system or systems within an Industrial Automation and
Control System environment that are being evaluated or designed for security enhancements.



System Under Assessment (SUA) - ✅✅-The system that is being evaluated for compliance with
standards.



What are some required information gathering items before the assessment can begin? - ✅✅-Goals of
the Assessment

IACS asset inventory

Understanding of the IACS

Regulations, requirements, and governance of relevance (Government, Industry, Company)

Architecture diagrams

, Configuration Files

Known vulnerabilities

Define roles and responsibilities

Establish training requirements



System Architecture Diagrams - ✅✅-Depiction of system components, their connectivity, and physical
locations.



Physical System Architecture Diagram - ✅✅-A diagram that provides a visual representation of the
physical components within a system and their interconnections. It focuses on hardware elements such
as servers, network devices, control systems, and terminals, showing how these components are
arranged and connected.



Functional System Architecture Diagram - ✅✅-A diagram that describes the functions of a system and
their relationships without focusing on physical details. It presents a logical view of the system,
emphasizing software elements, data flows, and interactions between different functions or modules
within the system.



(True/False) IACS functionality should be graphically represented on at least one IACS Architecture
drawing - ✅✅-True



ISA-95 Functional Layer Level 0 - ✅✅-The physical process — This level defines the physical processes
showing data flowing from sensors and actuators into the control level.



ISA-95 Functional Layer Level 1 - ✅✅-Intelligent devices — Devices in this level sense and manipule the
physical processes. Process, sensors, analyzers, actuators and related instrumentation. This layer shows
how PLCs receive field device data, process it, and then send commands back to the field devices.



ISA-95 Functional Layer Level 2 - ✅✅-Control systems — Supervising, monitoring and controlling the
physical processes. Real-time controls and software; DCS, human-machine interface (HMI); supervisory
and data acquisition (SCADA) software. This level represents how the control systems manage PLCs, how
operator commands are processed, and how alarm conditions are handled.

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