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| Section | Weight | Objectives |
|---|---|---|
| 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 |
| Access Control & Identity Management | 15% | - Role-based access control - Security policies and procedures - User authentication and authorization |
| Industrial Network Security | 30% | - Network segmentation and security architecture - Industrial protocols security - Threats, vulnerabilities and risk assessment |
| Industrial Automation and Control Systems (IACS) Overview | 15% | - Differences between IT and OT security - Cybersecurity importance in industrial environments - IACS components, architectures and protocols |
| Security Operations & Incident Response | 20% | - Monitoring, maintenance and continuous improvement - Incident handling and response processes - Cybersecurity Management System (CSMS) |
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NEW QUESTION # 150
What does a demilitarized zone (DMZ) provide in network security?
Answer: D
Explanation:
A demilitarized zone (DMZ) in network architecture provides indirect (controlled and monitored) access to the Internet or untrusted networks, usually by isolating publicly accessible services (like web servers) from internal control networks. This prevents direct exposure of sensitive IACS assets to external threats. While DMZs can support secure data transfer, their primary function is segmentation and indirect access.
Reference: ISA/IEC 62443-3-3:2013, Section 4.2.3; ISA/IEC 62443-1-1:2007, Section 3.2.6 (Network Security Architectures and DMZ).
NEW QUESTION # 151
Which is the BEST deployment system for malicious code protection?
Available Choices (select all choices that are correct)
Answer: C
Explanation:
Application whitelisting (AWL) is a technique that allows only authorized applications to run on a system, and blocks any unauthorized or malicious code from executing. AWL is one of the most effective methods for preventing malware infections and reducing the attack surface of a system. AWL can be implemented at different levels, such as the operating system, the network, or the application itself. AWL is especially useful for industrial automation and control systems (IACS), which often run on legacy or proprietary platforms that are not compatible with traditional antivirus software or other security solutions. AWL can also help protect IACS from zero-day attacks, which exploit unknown vulnerabilities that have not been patched or detected by security vendors. AWL is recommended by the ISA/IEC 62443 standards as a key component of malicious code protection for IACS. According to the standards, AWL should be applied to all IACS components that support it, and should be configured and maintained according to the security policies and procedures of the organization. AWL should also be complemented by other security measures, such as network segmentation, zones and conduits, and patch management, to provide a defense-in-depth approach to IACS security. References:
ISA/IEC 62443-3-3:2013, System security requirements and security levels, Section 5.2.3.41 ISA/IEC 62443-2-1:2010, Establishing an industrial automation and control systems security program, Section 4.3.3.6.42 ISA/IEC 62443-4-2:2019, Technical security requirements for IACS components, Section 4.2.3.43 ISA/IEC 62443-3-2:2020, Security risk assessment for system design, Section 7.3.3.44 ISA/IEC 62443-4-1:2018, Product development requirements, Section 5.2.3.45
NEW QUESTION # 152
How many security levels are in the ISASecure certification program?
Available Choices (select all choices that are correct)
Answer: B
Explanation:
The ISASecure certification program, aligned with the ISA/IEC 62443 standards, defines three distinct security levels that categorize the robustness of industrial control systems against known cybersecurity threats. These levels are designed to provide a scalable approach to securing industrial automation and control systems, with each level offering a higher degree of security. The levels are typically identified as SL1 (Security Level 1), SL2 (Security Level 2), and SL3 (Security Level 3), each addressing increasingly stringent security capabilities and resilience against cyber attacks.
NEW QUESTION # 153
Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?
Available Choices (select all choices that are correct)
Answer: D
NEW QUESTION # 154
Which factor drives the selection of countermeasures?
Available Choices (select all choices that are correct)
Answer: D
NEW QUESTION # 155
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