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| Section | Weight | Objectives |
|---|---|---|
| Security Operations & Incident Response | 20% | - Cybersecurity Management System (CSMS) - Monitoring, maintenance and continuous improvement - Incident handling and response processes |
| Industrial Network Security | 30% | - Industrial protocols security - Network segmentation and security architecture - Threats, vulnerabilities and risk assessment |
| Access Control & Identity Management | 15% | - Role-based access control - Security policies and procedures - User authentication and authorization |
| Industrial Automation and Control Systems (IACS) Overview | 15% | - IACS components, architectures and protocols - Differences between IT and OT security - Cybersecurity importance in industrial environments |
| Security Fundamentals & ISA/IEC 62443 Framework | 20% | - Structure and parts of ISA/IEC 62443 standards - Zones and conduits model - Core security principles: CIA triad, defense-in-depth - Foundational security requirements |
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NEW QUESTION # 105
Why is it important for the asset owner to incorporate the IACS into its organization and security program during the Operation and Maintenance phase?
Answer: D
Explanation:
ISA/IEC 62443 places primary accountability for cybersecurity risk on the asset owner, particularly during the Operation and Maintenance phase of the IACS lifecycle. This phase is where systems run for years or decades, and cybersecurity effectiveness depends less on design intent and more on how people and processes operate daily.
Step 1: Lifecycle responsibility of the asset owner
ISA/IEC 62443-2-1 requires the asset owner to establish, operate, and maintain an IACS Security Program.
During operation, cybersecurity controls must be embedded into routine organizational activities such as operations, maintenance, incident handling, training, and change management.
Step 2: Integration with people and processes
The standard explicitly recognizes that technology alone cannot manage cybersecurity risk. Operators, engineers, maintenance staff, and managers must understand their cybersecurity roles. Embedding IACS security into organizational processes ensures consistent execution across shifts, teams, and sites.
Step 3: Avoiding incorrect interpretations
Immediate decommissioning is not an operational objective. Allowing unrestricted remote updates by suppliers contradicts governance requirements. Granting full control to maintenance providers violates the asset owner's accountability.
Step 4: Operational resilience
By embedding IACS security into organizational culture and workflows, the asset owner ensures that security measures are sustained, monitored, and improved over time.
Therefore, the correct reason is to embed the IACS within organizational processes and people.
NEW QUESTION # 106
How can defense in depth be achieved via security zones?
Answer: C
Explanation:
ISA/IEC 62443 defines "defense in depth" as a layered approach to security. This can be accomplished by implementing zones within zones (sometimes called subzones), where each zone or subzone provides an additional security barrier or control layer. This segmentation restricts an attacker's ability to move laterally and ensures that compromise of one zone does not automatically result in compromise of the entire system.
Reference: ISA/IEC 62443-1-1:2007, Section 4.3.3 ("Zones and Conduits"); ISA/IEC 62443-3-2:2020, Section 4.4.3 ("Layered security using zones and subzones").
NEW QUESTION # 107
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: C
Explanation:
The reference model provides the overall conceptual basis in the design of an appropriate security program. It defines the common terminology, concepts, and models that can be used by all stakeholders responsible for IACS security. The reference model describes the general characteristics of IACS, the typical threats and vulnerabilities, the security lifecycle phases, and the security levels. The reference model also introduces the concepts of zones and conduits, which are used to group and isolate assets with similar security requirements and to control the communication between them. References https://www.cisco.com/c/en/us/td/docs/solutions
/Verticals/IoT_Security_Lab/IEC62443_WP.pdf
https://www.cisco.com/c/en/us/td/docs/solutions/Verticals/IoT_Security_Lab/IEC62443_WP.pdf
NEW QUESTION # 108
Authorization (user accounts) must be granted based on which of the following?
Available Choices (select all choices that are correct)
Answer: D
Explanation:
Authorization is the process of granting or denying access to a network resource or function. Authorization (user accounts) must be granted based on specific roles, which are defined as sets of permissions and responsibilities assigned to a user or a group of users. Roles should be based on the principle of least privilege, which means that users should only have the minimum level of access required to perform their tasks. Roles should also be based on the principle of separation of duties, which means that users should not have conflicting or overlapping responsibilities that could compromise the security or integrity of the system.
Authorization based on individual preferences or common needs for large groups is not recommended, as it could lead to excessive or unnecessary access rights, or to inconsistent or conflicting policies. Authorization based on system complexity is also not a good criterion, as it could result in overcomplicated or unclear roles that are difficult to manage or audit. References:
ISA/IEC 62443-3-3:2013 - Security for industrial automation and control systems - Part 3-3: System security requirements and security levels1 ISA/IEC 62443-2-1:2010 - Security for industrial automation and control systems - Part 2-1: Establishing an industrial automation and control systems security program2 ISA/IEC 62443-4-1:2018 - Security for industrial automation and control systems - Part 4-1: Product security development life-cycle requirements3
NEW QUESTION # 109
Which statement is TRUE regarding Intrusion Detection Systems (IDS)?
Available Choices (select all choices that are correct)
Answer: D
NEW QUESTION # 110
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