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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Industrial Automation and Control Systems (IACS) Overview | 15% | - Cybersecurity importance in industrial environments - IACS components, architectures and protocols - Differences between IT and OT security |
| Topic 2: Security Operations & Incident Response | 20% | - Cybersecurity Management System (CSMS) - Monitoring, maintenance and continuous improvement - Incident handling and response processes |
| Topic 3: Industrial Network Security | 30% | - Network segmentation and security architecture - Threats, vulnerabilities and risk assessment - Industrial protocols security |
| Topic 4: Security Fundamentals & ISA/IEC 62443 Framework | 20% | - Structure and parts of ISA/IEC 62443 standards - Foundational security requirements - Zones and conduits model - Core security principles: CIA triad, defense-in-depth |
| Topic 5: Access Control & Identity Management | 15% | - Role-based access control - User authentication and authorization - Security policies and procedures |
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NEW QUESTION # 113
What is the name of the missing layer in the Open Systems Interconnection (OSI) model shown below?
Answer: C
Explanation:
The OSI model defines 7 layers for standardizing communications in network systems. The Transport Layer is responsible for reliable data transfer between end systems, including flow control, error correction, and segmentation. It sits between the Network Layer and the Session Layer.
The correct OSI model from top to bottom is:
Application
Presentation
Session
Transport # Missing layer
Network
Data Link
Physical
"The transport layer provides transparent transfer of data between end users, ensuring complete data transfer."
- ISA/IEC 62443-3-3:2013, Annex A - Communications Stack and Layered Security Concepts Understanding the OSI model is crucial when designing secure industrial networks, as ISA/IEC 62443 advocates for layered defense ("defense in depth") at all levels.
References:
ISA/IEC 62443-3-3:2013 - Annex A
ISA/IEC 62443-1-1:2007 - Section on OSI Reference Model
NEW QUESTION # 114
Which part of the ISA/IEC 62443 series describes a methodology to develop quantitative metrics?
Answer: A
Explanation:
ISA/IEC 62443-1-3 specifically provides guidance on developing quantitative metrics for evaluating the effectiveness of IACS security programs. This part introduces models and methods to create meaningful security program ratings, allowing organizations to quantitatively measure their security maturity and the effectiveness of security controls over time.
Reference: ISA/IEC 62443-1-3:2017, Introduction and Scope.
NEW QUESTION # 115
After receiving an approved patch from the JACS vendor, what is BEST practice for the asset owner to follow?
Answer: C
Explanation:
According to the ISA/IEC 62443 Cybersecurity Fundamentals Specialist resources, patches are software updates that fix bugs, vulnerabilities, or improve performance of a system. Patches are classified into three categories based on their urgency and impact: low, medium, and high. Low priority patches are those that have minimal or no impact on the system functionality or security, and can be applied at the next scheduled maintenance. Medium priority patches are those that have moderate impact on the system functionality or security, and should be applied within a reasonable time frame, such as three months. High priority patches are those that have significant or critical impact on the system functionality or security, and should be applied as soon as possible, preferably at the first unscheduled outage. Applying patches in a timely manner is a best practice for maintaining the security and reliability of an industrial automation and control system (IACS). References:
ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 4.3.2, Patch Management ISA/IEC 62443-2-1:2009, Security for industrial automation and control systems - Part 2-1: Establishing an industrial automation and control systems security program, Clause 5.3.2.2, Patch management ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems - Part 3-3: System security requirements and security levels, Clause 4.3.3.6.2, Patch management
NEW QUESTION # 116
Which of the following tools has the potential for serious disruption of a control network and should not be used on a live system?
Available Choices (select all choices that are correct)
Answer: A
Explanation:
A vulnerability scanner is a tool that scans a network or a system for known vulnerabilities, such as misconfigurations, outdated software, or weak passwords. A vulnerability scanner can provide valuable information for improving the security posture of a system, but it can also cause serious disruption of a control network if used on a live system. This is because a vulnerability scanner may generate a large amount of network traffic, consume system resources, trigger alarms, or even crash devices by exploiting vulnerabilities. Therefore, a vulnerability scanner should not be used on a live system without proper authorization and precautions. A vulnerability scanner should only be used on a test or isolated network, or during a scheduled maintenance window with minimal impact on the system operation. References: ISA/IEC
62443 Standards to Secure Your Industrial Control System, Module 5: Assessing the Current Security Level, Slide 25.
NEW QUESTION # 117
Which statement BEST describes the Target Security Protection Ratings?
Answer: C
Explanation:
Target Security Levels (SL-T) or Target Security Protection Ratings are defined as the desired security levels that must be achieved for a specific zone or conduit, based on risk assessment and business requirements.
"The Target Security Level (SL-T) represents the desired level of protection against threats for a zone or conduit, to be fulfilled through appropriate security measures."
- ISA/IEC 62443-3-2:2020, Clause 6.5.2 - Target SL Vector Determination They are not the actual achieved level (SL-A), nor are they a measure of cost-effectiveness. SL-Ts guide system designers and implementers in selecting appropriate security controls.
References:
ISA/IEC 62443-3-2:2020 - Clause 6.5.2
ISA/IEC 62443-1-1 - Security Level Types: SL-T, SL-A, SL-C
NEW QUESTION # 118
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