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[General] Complete ISA-IEC-62443 Exam Dumps - Reliable ISA-IEC-62443 Test Bootcamp

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【General】 Complete ISA-IEC-62443 Exam Dumps - Reliable ISA-IEC-62443 Test Bootcamp

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q104-Q109):NEW QUESTION # 104
Which of the following PRIMARILY determines access privileges for user accounts?
Available Choices (select all choices that are correct)
  • A. Users' desire for ease of use
  • B. Authorization security policy
  • C. Common practice
  • D. Technical capability
Answer: B

NEW QUESTION # 105
How can defense in depth be achieved via security zones?
  • A. By having a zone edge that is using the security policies of the asset owner
  • B. By having zones that are connected via using the latest version of SSL
  • C. By having zones that separate sensors from actuators, that provide layered security
  • D. By having zones within zones, or subzones, that provide layered security
Answer: D
Explanation:
Defense in depth is a core concept of ISA/IEC 62443, and security zones are a structural method to implement it. According to ISA/IEC 62443-3-2 and 62443-1-1, layering can be achieved by nesting zones - creating zones within zones (i.e., subzones) - to enhance protection through multiple barriers.
"Defense in depth is realized through segmentation into zones and conduits. A zone may contain subzones to establish additional layers of security, providing multiple barriers to intrusion."
- ISA/IEC 62443-3-2:2020, Clause 5.3.2 - Zone and Conduit Model
This layered zoning approach enables tiered security controls, reducing the impact of breaches and limiting lateral movement within a network.
References:
ISA/IEC 62443-3-2:2020 - Clause 5.3.2
ISA/IEC 62443-1-1:2007 - Security Zones and Conduits

NEW QUESTION # 106
An industrial facility wants to ensure that only authorized systems reach its PLCs while minimizing disruption to time-sensitive control processes. Which type of firewall would BEST suit this need?
  • A. Unidirectional gateway (data diode)
  • B. IACS-specific firewall with deep packet inspection
  • C. Basic packet filter firewall without protocol awareness
  • D. General-purpose software firewall
Answer: B
Explanation:
For industrial networks, the most effective approach is to use IACS-specific firewalls that perform deep packet inspection (DPI) of industrial protocols (e.g., Modbus, DNP3, OPC UA).
"Industrial-specific firewalls with DPI capabilities can inspect control system protocols and enforce granular access control without disrupting time-sensitive operations."
- ISA/IEC 62443-3-3:2013, SR 5.1 - Zone Boundary Protection
Unlike generic IT firewalls, IACS-specific firewalls:
Understand OT protocols
Enforce real-time constraints
Support deterministic traffic flows
References:
ISA/IEC 62443-3-3:2013 - SR 5.1
ISA/IEC 62443-1-1 - Zone and conduit protection technologies

NEW QUESTION # 107
Which analysis method is MOST frequently used as an input to a security risk assessment?
Available Choices (select all choices that are correct)
  • A. Failure Mode and Effects Analysis
  • B. Job Safety Analysis
  • C. Process Hazard Analysis (PHA)
  • D. System Safety Analysis(SSA)
Answer: C

NEW QUESTION # 108
How many security levels are in the ISASecure certification program?
Available Choices (select all choices that are correct)
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Answer: A
Explanation:
The ISASecure certification program, aligned with the ISA/IEC 62443 standards, defines three distinct security levels that categorize the robustness of industrial control systems against known cybersecurity threats. These levels are designed to provide a scalable approach to securing industrial automation and control systems, with each level offering a higher degree of security. The levels are typically identified as SL1 (Security Level 1), SL2 (Security Level 2), and SL3 (Security Level 3), each addressing increasingly stringent security capabilities and resilience against cyber attacks.

NEW QUESTION # 109
......
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