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| Section | Objectives |
|---|---|
| Topic 1: Monitoring and Improving the CSMS | - Incident detection and response - Continuous monitoring of IACS cybersecurity - Security lifecycle management |
| Topic 2: Creating A Security Program | - Security management organization - Developing a long-term security program - Defining information security policy |
| Topic 3: Understanding the Current Industrial Security Environment | - Convergence of IT and OT - Security challenges in OT environments - Current state of industrial control systems security |
| Topic 4: Addressing Risk with Selected Security Counter Measures | - Patch management - Firewalls and network security devices - Virtual Private Networks (VPNs) - Anti-virus and endpoint protection |
| Topic 5: Validating or Verifying the Security of Systems | - Continuous improvement of security measures - Security validation and verification techniques - Auditing and compliance |
| Topic 6: Risk Analysis | - Risk management fundamentals - Risk and vulnerability analysis techniques - Cybersecurity risk assessment concepts |
| Topic 7: Addressing Risk with Security Policy, Organization, and Awareness | - Security awareness and training - Organizational security roles and responsibilities - Security policies and procedures |
| Topic 8: How Cyberattacks Happen | - Vulnerabilities in industrial systems - Case studies of industrial cyber incidents - Cyber threats and attack vectors |
| Topic 9: Addressing Risk with Implementation Measures | - Zones and conduits model - Access control principles - Defense-in-depth strategy - Industrial network architecture and segmentation |
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質問 # 160
After receiving an approved patch from the JACS vendor, what is BEST practice for the asset owner to follow?
正解：B
解説：
According to the ISA/IEC 62443 Cybersecurity Fundamentals Specialist resources, patches are software updates that fix bugs, vulnerabilities, or improve performance of a system. Patches are classified into three categories based on their urgency and impact: low, medium, and high. Low priority patches are those that have minimal or no impact on the system functionality or security, and can be applied at the next scheduled maintenance. Medium priority patches are those that have moderate impact on the system functionality or security, and should be applied within a reasonable time frame, such as three months. High priority patches are those that have significant or critical impact on the system functionality or security, and should be applied as soon as possible, preferably at the first unscheduled outage. Applying patches in a timely manner is a best practice for maintaining the security and reliability of an industrial automation and control system (IACS).
References:
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 4.3.2, Patch Management
* ISA/IEC 62443-2-1:2009, Security for industrial automation and control systems - Part 2-1:
Establishing an industrial automation and control systems security program, Clause 5.3.2.2, Patch management
* ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems - Part 3-3: System security requirements and security levels, Clause 4.3.3.6.2, Patch management
質問 # 161
What do the tiers in the NIST CSF represent?
正解：C
解説：
In the NIST Cybersecurity Framework (CSF), "tiers" represent the degree to which an organization's cybersecurity risk management practices exhibit the characteristics defined in the framework (such as risk awareness, repeatability, and adaptability). Tiers range from Partial (Tier 1) to Adaptive (Tier 4) and describe the organization's overall cybersecurity maturity or profile.
Reference: NIST CSF v1.1, Section 2.2 ("Framework Implementation Tiers"); ISA/IEC 62443-1-1:2007, Section 4.2.7.
質問 # 162
Why is OPC Classic considered firewall unfriendly?
正解：D
解説：
OPC Classic uses Microsoft's DCOM (Distributed Component Object Model) for communication, which dynamically opens multiple ports, making it extremely difficult to manage with firewalls.
"OPC Classic is firewall-unfriendly because DCOM requires dynamic port negotiation, making it difficult to define consistent firewall rules."
- ISA/IEC 62443-3-3:2013, Annex A - Communication Protocols and Security Concerns This lack of port predictability presents a significant security and operational risk, which led to the development of OPC UA, which uses fixed ports and supports encryption.
References:
ISA/IEC 62443-3-3 - Annex A
OPC Foundation Security Guidelines
質問 # 163
What is the primary purpose of the NIST Cybersecurity Framework (CSF)?
正解：C
解説：
The NIST Cybersecurity Framework (CSF) was developed to enhance the security and resilience of critical infrastructure in the United States by providing a flexible, repeatable, and cost-effective risk-based approach to managing cybersecurity risk. It is designed to complement, not replace, existing standards and guidelines, and is intended for voluntary adoption by critical infrastructure organizations.
Reference: ISA/IEC 62443-1-1:2007, Section 4.2.7; NIST CSF Framework Core, "Purpose and Scope" (NIST CSF 1.1, Section 1.0).
質問 # 164
Why is patch management more difficult for IACS than for business systems?
Available Choices (select all choices that are correct)
正解：B
質問 # 165
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