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ISA ISA-IEC-62443 Exam Syllabus Topics:

SectionObjectives
Introduction to Industrial Cybersecurity- Overview of IT vs OT security concepts
- Fundamentals of cybersecurity in industrial environments
ISA/IEC 62443 Framework Overview- Structure and purpose of IEC 62443 standards
- Key terminology and concepts (zones, conduits, security levels)
Industrial Network and System Security- Asset identification and protection
- Network segmentation and architecture security
Risk and Security Management- Security lifecycle management in industrial systems
- Risk assessment principles
Policies, Procedures, and Governance- Compliance and governance considerations
- Security policies for industrial control systems

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q90-Q95):

NEW QUESTION # 90
Which of the following is an industry sector-specific standard?
Available Choices (select all choices that are correct)

Answer: C

Explanation:
API 1164 is an industry sector-specific standard that provides guidance on the cybersecurity of pipeline supervisory control and data acquisition (SCADA) systems. API stands for American Petroleum Institute, which is the largest U.S. trade association for the oil and natural gas industry. API 1164 was first published in
2004 and revised in 2009 and 2021. The latest version of the standard aligns with the ISA/IEC 62443 series of standards and incorporates the concepts of security levels, zones, and conduits. API 1164 covers the security lifecycle of pipeline SCADA systems, from risk assessment and policy development to implementation and maintenance. The standard also defines roles and responsibilities, security requirements, security controls, and security assessment methods for pipeline SCADA systems.
References:
* API 1164: Pipeline SCADA Security, Fourth Edition, September 2021
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 2.2.2, Industry Sector-Specific Standards
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 2.2.2, Industry Sector-Specific Standards


NEW QUESTION # 91
Which of the following is NOT a strategy for deploying a WAN?

Answer: A

Explanation:
A Local Area Network (LAN) is not a strategy for deploying a Wide Area Network (WAN). WAN deployment strategies include using the public Internet, private enterprise WANs, or carrier-managed WANs.
LANs, by definition, serve local, not wide-area, connectivity. ISA/IEC 62443 standards refer to different strategies for extending network communications over broader geographic regions, but do not classify LAN as a WAN deployment option.
Reference: ISA/IEC 62443-3-3:2013, Section 4.2.3.4 ("Communications network technologies"); Glossary definitions for LAN and WAN.


NEW QUESTION # 92
What does a demilitarized zone (DMZ) provide in network security?

Answer: C

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 # 93
What is the primary purpose of the NIST Cybersecurity Framework (CSF)?

Answer: D

Explanation:
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).


NEW QUESTION # 94
After receiving an approved patch from the IACS vendor, what is BEST practice for the asset owner to follow?

Answer: C

Explanation:
Per ISA/IEC 62443-2-1 and 62443-2-3, proper patch management is part of operational cybersecurity. For high-priority or critical security patches, the best practice is to apply the patch at the earliest possible opportunity, often during the next available unscheduled or scheduled outage.
"Asset owners shall define procedures for evaluating and applying patches based on criticality and potential impact. High-priority patches should be applied at the earliest opportunity, preferably at the first available system downtime."
- ISA/IEC 62443-2-3:2015, Clause 6.1 - Patch Management Process
Waiting unnecessarily or skipping patches because "nothing is broken" is not acceptable in security-critical environments.
References:
ISA/IEC 62443-2-1:2010 - Clause 4.4.3.2
ISA/IEC 62443-2-3:2015 - Patch Management Guidance


NEW QUESTION # 95
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