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| Section | Objectives |
|---|---|
| Risk and Security Management | - Risk assessment principles - Security lifecycle management in industrial systems |
| Policies, Procedures, and Governance | - Compliance and governance considerations - Security policies for industrial control systems |
| ISA/IEC 62443 Framework Overview | - Structure and purpose of IEC 62443 standards - Key terminology and concepts (zones, conduits, security levels) |
| Introduction to Industrial Cybersecurity | - Fundamentals of cybersecurity in industrial environments - Overview of IT vs OT security concepts |
| Industrial Network and System Security | - Network segmentation and architecture security - Asset identification and protection |
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NEW QUESTION # 38
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 # 39
Which service does an Intrusion Detection System (IDS) provide?
Available Choices (select all choices that are correct)
Answer: C
Explanation:
An intrusion detection system (IDS) is a network security tool that monitors network traffic and devices for known malicious activity, suspicious activity or security policy violations. The IDS sends alerts to IT and security teams when it detects any security risks and threats. However, an IDS does not block or prevent the malicious activity, it only detects and reports it. Therefore, an IDS is not the lock on the door for networks and computer systems, nor is it effective against all vulnerabilities in networks and computer systems. An IDS can be combined with an intrusion prevention system (IPS) to block the malicious activity in real time. References:
What is Intrusion Detection Systems (IDS)? How does it Work? | Fortinet1 Intrusion Detection System (IDS) - GeeksforGeeks2 What is an intrusion detection system (IDS)? - IBM3
NEW QUESTION # 40
Which of the following BEST describes a control system?
Answer: B
Explanation:
A control system, in the context of ISA/IEC 62443, refers to the hardware and software components of an Industrial Automation and Control System (IACS). This includes PLCs, SCADA, DCS, HMIs, sensors, actuators, and supporting networks and applications used to monitor and control physical processes.
Reference: ISA/IEC 62443-1-1:2007, Section 3.2.1 (Definition of control system and IACS).
NEW QUESTION # 41
What type of cyberattack was discussed in the Ukrainian power grid case study?
Answer: D
Explanation:
The Ukrainian power grid cyberattack (2015 and 2016 incidents) is widely documented as a "nation state" attack. It was attributed to a highly skilled, well-resourced group with nation-state backing, and demonstrated the ability to compromise, disrupt, and remotely control industrial systems in critical infrastructure. This attack is discussed in ISA/IEC 62443 training and guidance as an example of advanced persistent threat (APT) activity targeting industrial control systems.
Reference: ISA/IEC 62443-1-1:2007, Section 4.2.6; SANS ICS Analysis of the Ukraine Blackout; US-CERT Alert (IR-ALERT-H-16-056-01).
NEW QUESTION # 42
Which analysis method is MOST frequently used as an input to a security risk assessment?
Available Choices (select all choices that are correct)
Answer: B
Explanation:
A Process Hazard Analysis (PHA) is a systematic method of identifying and evaluating the potential hazards associated with an industrial process. A PHA can help to identify the sources of cyber threats, the consequences of cyber incidents, and the existing safeguards and mitigation measures. A PHA is most frequently used as an input to a security risk assessment because it provides a comprehensive and structured overview of the process and its risks, which can then be used to determine the security level targets and security countermeasures for the industrial automation and control system (IACS). A PHA can also help to align the security objectives with the safety objectives of the process, and to ensure that the security measures do not compromise the safety or operability of the process. References:
* ISA/IEC 62443 Standards to Secure Your Industrial Control System, page 10
* Using the ISA/IEC 62443 Standard to Secure Your Control System, page 17
NEW QUESTION # 43
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