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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Industrial Automation and Control Systems (IACS) Overview | 15% | - Differences between IT and OT security - Cybersecurity importance in industrial environments - IACS components, architectures and protocols |
| Topic 2: Security Operations & Incident Response | 20% | - Monitoring, maintenance and continuous improvement - Incident handling and response processes - Cybersecurity Management System (CSMS) |
| Topic 3: Security Fundamentals & ISA/IEC 62443 Framework | 20% | - Foundational security requirements - Structure and parts of ISA/IEC 62443 standards - Core security principles: CIA triad, defense-in-depth - Zones and conduits model |
| Topic 4: Access Control & Identity Management | 15% | - User authentication and authorization - Role-based access control - Security policies and procedures |
| Topic 5: Industrial Network Security | 30% | - Threats, vulnerabilities and risk assessment - Network segmentation and security architecture - Industrial protocols security |
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NEW QUESTION # 77
Which characteristic is MOST closely associated with the deployment of a demilitarized zone (DMZ)?
Available Choices (select all choices that are correct)
Answer: D
Explanation:
In cybersecurity, a demilitarized zone (DMZ) refers to a physical or logical subnetwork that contains and exposes an organization's external-facing services to an untrusted network, typically the internet. The main characteristic of a DMZ is that it acts as a buffer zone between the public internet and the private network.
This allows for internet access through the firewall while keeping the internal network secure. Internet-facing servers are placed in the DMZ so that they are separated from the rest of the internal network. By doing so, if a server in the DMZ is compromised, the attacker would not have direct access to the internal network. This architecture is commonly used to host services such as web servers, mail servers, and FTP servers. Choice C is the most closely associated with the deployment of a DMZ as it allows for regulated and monitored internet access through a firewall.
NEW QUESTION # 78
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: C
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 # 79
Which of the following provides the overall conceptual basis in the design of an appropriate security program?
Available Choices (select all choices that are correct)
Answer: D
NEW QUESTION # 80
Which standard is applied during the Assess phase for risk assessment?
Answer: D
Explanation:
ISA/IEC 62443-3-2 specifically describes the methodology for conducting risk assessments within industrial automation and control systems (IACS). This part of the standard provides guidance on identifying risks, assigning Security Levels, and making design decisions during the Assess phase of the IACS Cybersecurity Lifecycle.
Reference: ISA/IEC 62443-3-2:2020, Section 4 ("Cybersecurity risk assessment for system design").
NEW QUESTION # 81
Which is NOT a potential consequence for organizations that fail to prioritize control system security?
Answer: C
Explanation:
Decreased energy consumption is not a consequence of poor control system security. In fact, security breaches often lead to increased (not decreased) energy consumption due to inefficiencies, system downtime, or damage. Real consequences of failing to prioritize control system security include personal injury (due to process hazards), unauthorized data access, theft or misuse, and violation of regulations (with possible legal penalties).
Reference: ISA/IEC 62443-1-1:2007, Section 4.4; ISA/IEC 62443-2-1:2009, Section 4.2.2 (Potential Consequences Table).
NEW QUESTION # 82
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