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| Section | Objectives |
|---|---|
| Topic 1: Creating A Security Program | - Security management organization - Defining information security policy - Developing a long-term security program |
| Topic 2: Addressing Risk with Selected Security Counter Measures | - Firewalls and network security devices - Patch management - Virtual Private Networks (VPNs) - Anti-virus and endpoint protection |
| Topic 3: Addressing Risk with Security Policy, Organization, and Awareness | - Security policies and procedures - Organizational security roles and responsibilities - Security awareness and training |
| Topic 4: Risk Analysis | - Risk and vulnerability analysis techniques - Cybersecurity risk assessment concepts - Risk management fundamentals |
| Topic 5: Monitoring and Improving the CSMS | - Security lifecycle management - Continuous monitoring of IACS cybersecurity - Incident detection and response |
| Topic 6: Validating or Verifying the Security of Systems | - Continuous improvement of security measures - Security validation and verification techniques - Auditing and compliance |
| Topic 7: How Cyberattacks Happen | - Cyber threats and attack vectors - Vulnerabilities in industrial systems - Case studies of industrial cyber incidents |
| Topic 8: Addressing Risk with Implementation Measures | - Defense-in-depth strategy - Industrial network architecture and segmentation - Zones and conduits model - Access control principles |
| Topic 9: Understanding the Current Industrial Security Environment | - Current state of industrial control systems security - Convergence of IT and OT - Security challenges in OT environments |
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質問 # 91
Security Levels (SLs) are broken down into which three types?
Available Choices (select all choices that are correct)
正解：B
解説：
Security Levels (SLs) are a way of expressing the security performance of an industrial automation and control system (IACS) or its components. SLs are broken down into three types: target, capability, and achieved1.
* Target SL is the level of security performance that is required for a system or component to protect against a specific threat scenario. The target SL is determined by conducting a risk assessment that considers the likelihood and impact of potential security incidents1.
* Capability SL is the level of security performance that a system or component can provide based on its design and implementation. The capability SL is determined by evaluating the security functions and features of the system or component against a set of security requirements1.
* Achieved SL is the level of security performance that a system or component actually provides in its operational environment. The achieved SL is determined by verifying that the system or component is properly installed, configured, maintained, and monitored1.
References: ISA/IEC 62443 Standards to Secure Your Industrial Control System, page 3-4.
質問 # 92
If an asset owner wants to improve their organization's ability to respond during a cyberattack, which of the following activities would be MOST appropriate to implement?
正解：A
解説：
ISA/IEC 62443 emphasizes preparedness and coordinated response as part of incident handling and response requirements.
Step 1: Purpose of tabletop exercises
Tabletop exercises simulate cyber incidents and require participants to practice decision-making, communication, escalation, and coordination without impacting live systems.
Step 2: Alignment with SP Element 7
SP Element 7 focuses on incident handling and response. Tabletop exercises directly validate these processes and identify gaps before a real incident occurs.
Step 3: Why other options are less effective for response readiness
Password hygiene improves prevention, not response. Architecture workshops build awareness, not reaction capability. Operator anomaly drills focus on detection, not coordinated response.
Step 4: Operational benefit
ISA/IEC 62443 stresses that response effectiveness depends on people and processes being exercised in advance.
Thus, tabletop exercises are the most appropriate activity.
質問 # 93
What is a major reason for maintaining an asset inventory baseline in Configuration Management (SP Element 2)?
正解：C
解説：
SP Element 2 in ISA/IEC 62443-2-1 focuses on Configuration Management, with the asset inventory baseline as a foundational requirement.
Step 1: Purpose of an inventory baseline
The inventory baseline documents all hardware, software, firmware, and configuration items that make up the IACS. This establishes a known, trusted state of the system.
Step 2: Architecture visibility
By maintaining this baseline, the asset owner gains a clear and accurate understanding of the IACS architecture, including system components, versions, and dependencies.
Step 3: Why other options are incorrect
Physical access control and user authentication are addressed in different SP Elements. Event management detects anomalies, but it relies on the inventory baseline rather than replacing it.
Thus, the primary reason is to document IACS architecture.
質問 # 94
Which of the following refers to internal rules that govern how an organization protects critical system resources?
Available Choices (select all choices that are correct)
正解：C
解説：
A security policy refers to internal rules that govern how an organization protects critical system resources, such as industrial control systems (ICS). A security policy defines the objectives, scope, roles, responsibilities, and requirements for securing the ICS environment, as well as the procedures and guidelines for implementing, monitoring, and enforcing the security measures. A security policy also establishes the baseline for assessing and managing the security risks to the ICS, and for ensuring compliance with relevant standards, regulations, and best practices. A security policy is a key component of the ICS security program, and it should be documented, communicated, and reviewed regularly.
The other choices are not correct because:
A). Formal guidance. Formal guidance refers to external sources of information and recommendations that can help an organization improve its ICS security posture, such as standards, frameworks, guidelines, and best practices. Formal guidance is not an internal rule, but rather a reference that can be used to develop, implement, and evaluate the security policy and controls. For example, the ISA/IEC 62443 series of standards provide formal guidance on how to secure ICS from cyber threats1.
B). Legislation. Legislation refers to external laws and regulations that impose legal obligations and penalties on an organization for its ICS security performance, such as the NERC CIP standards for the electric sector2, or the EU NIS Directive for critical infrastructure operators3. Legislation is not an internal rule, but rather a compliance requirement that must be met by the organization. Legislation may also influence the security policy and controls, as the organization needs to align its security objectives and practices with the legal expectations and consequences.
D). Code of conduct. A code of conduct refers to a set of ethical principles and values that guide the behavior and decision-making of an organization and its employees, such as honesty, integrity, respect, and accountability. A code of conduct is not an internal rule for protecting critical system resources, but rather a general norm for conducting business and maintaining a positive reputation. A code of conduct may also support the security policy and culture, as it can foster a sense of responsibility and trust among the ICS stakeholders.
References:
1: ISA/IEC 62443 Standards to Secure Your Industrial Control System
2: NERC Critical Infrastructure Protection Standards
3: EU Network and Information Systems Directive
質問 # 95
What is the primary purpose of the NIST Cybersecurity Framework (CSF)?
正解：B
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 # 96
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