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| Section | Weight | Objectives |
|---|---|---|
| Industrial Automation and Control Systems (IACS) Overview | 15% | - IACS components, architectures and protocols - Cybersecurity importance in industrial environments - Differences between IT and OT security |
| Access Control & Identity Management | 15% | - Security policies and procedures - User authentication and authorization - Role-based access control |
| Security Operations & Incident Response | 20% | - Cybersecurity Management System (CSMS) - Incident handling and response processes - Monitoring, maintenance and continuous improvement |
| Industrial Network Security | 30% | - Network segmentation and security architecture - Industrial protocols security - Threats, vulnerabilities and risk assessment |
| Security Fundamentals & ISA/IEC 62443 Framework | 20% | - Zones and conduits model - Structure and parts of ISA/IEC 62443 standards - Core security principles: CIA triad, defense-in-depth - Foundational security requirements |
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NEW QUESTION # 37
Which activity is part of establishing policy, organization, and awareness?
Available Choices (select all choices that are correct)
Answer: C
Explanation:
According to the ISA/IEC 62443 Cybersecurity Fundamentals Specialist course, establishing policy, organization, and awareness is one of the four steps of the IACS cybersecurity lifecycle. This step involves defining the cybersecurity policies, roles, and responsibilities, as well as communicating them to the relevant stakeholders. It also involves establishing the risk tolerance level, which is the acceptable level of risk for the organization. Communicating policies and establishing the risk tolerance are both activities that are part of this step. Identifying detailed vulnerabilities and implementing countermeasures are activities that belong to the next steps of the lifecycle, which are assessing the current situation and implementing the cybersecurity program, respectively. References: ISA/IEC 62443 Cybersecurity Fundamentals Specialist course, Module 2:
IACS Cybersecurity Lifecycle1
NEW QUESTION # 38
Which model describes relationships between assets within an industrial automation and control system?
Answer: C
Explanation:
The asset model is used in ISA/IEC 62443 to represent and describe the relationships and dependencies between different assets in an IACS environment. This model helps organizations identify and document assets, their interconnections, and their significance for operational and cybersecurity purposes. The zone model builds upon the asset model for segmentation, but the asset model itself establishes the foundational relationships.
Reference: ISA/IEC 62443-1-1:2007, Section 4.3.1 ("Asset Model"); Figure 3 ("Example asset model for IACS").
NEW QUESTION # 39
Which of the following is an example of separation of duties as a part of system development and maintenance?
Available Choices (select all choices that are correct)
Answer: B
Explanation:
Separation of duties is a security principle that aims to prevent fraud, errors, conflicts of interest, or misuse of resources by dividing critical tasks or functions among different people or teams. It is one of the foundational requirements (FRs) of the ISA/IEC 62443 standards for securing industrial automation and control systems (IACSs). According to the ISA/IEC 62443-2-1 standard, separation of duties includes the following system requirements (SRs):
* SR 2.1: Security management policy
* SR 2.2: Personnel security
* SR 2.3: System development and maintenance
* SR 2.4: Incident response and recovery
* SR 2.5: Compliance and review
Among these SRs, the one that is most related to the example of system development and maintenance is SR
2.3. SR 2.3 requires that the IACS shall provide the capability to ensure that the development and maintenance of the system and its components are performed in a secure manner. This means that the IACS should have a mechanism to control the access and authorization of developers, testers, integrators, and maintainers who work on the system and its components. It also means that the IACS should have a mechanism to verify and validate the quality and security of the system and its components before, during, and after the development and maintenance processes.
Therefore, an example of separation of duties as a part of system development and maintenance is that changes are approved by one party and implemented by another. This ensures that the changes are authorized, documented, and reviewed by someone who is not involved in the implementation. This reduces the risk of introducing errors, vulnerabilities, or malicious code into the system and its components.
References:
* ISA/IEC 62443-2-1:2010, Security for industrial automation and control systems - Part 2-1: Establishing an industrial automation and control systems security program1
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Certificate Program2
* ISA/IEC 62443 Cybersecurity Library3
* Using the ISA/IEC 62443 Standards to Secure Your Control Systems4
NEW QUESTION # 40
What port number is used by MODBUS TCP/IP for communication?
Answer: D
Explanation:
MODBUS TCP/IP, a widely used communication protocol in industrial control systems, uses TCP port 502 by default.
"Modbus TCP/IP operates on TCP port 502, and this port should be monitored and protected to prevent unauthorized commands to critical control systems."
- ISA/IEC 62443-3-3:2013, Annex A - Communication Protocols
This makes port 502 a high-value target for attackers, which is why it must be secured via firewalls and access control.
References:
ISA/IEC 62443-3-3:2013 - Annex A
MODBUS Application Protocol Specification v1.1b
NEW QUESTION # 41
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?
Answer: A
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 # 42
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