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| Section | Objectives |
|---|---|
| Topic 1: Industrial Network and System Security | - Asset identification and protection - Network segmentation and architecture security |
| Topic 2: Introduction to Industrial Cybersecurity | - Overview of IT vs OT security concepts - Fundamentals of cybersecurity in industrial environments |
| Topic 3: Risk and Security Management | - Security lifecycle management in industrial systems - Risk assessment principles |
| Topic 4: Policies, Procedures, and Governance | - Compliance and governance considerations - Security policies for industrial control systems |
| Topic 5: ISA/IEC 62443 Framework Overview | - Structure and purpose of IEC 62443 standards - Key terminology and concepts (zones, conduits, security levels) |
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NEW QUESTION # 219
Which activity is part of establishing policy, organization, and awareness?
Available Choices (select all choices that are correct)
Answer: C
NEW QUESTION # 220
If an industrial control system experiences frequent unexpected shutdowns causing downtime, which SP Element activities should be reviewed to improve system availability?
Answer: D
Explanation:
Frequent unexpected shutdowns relate directly to system availability and recoverability. According to ISA
/IEC 62443-2-1, SP Element 8 focuses on:
Backup procedures
Restoration processes
Business continuity in response to disruptions
"SP Element 8 addresses recovery and continuity controls such as backups, restoration testing, and fallback procedures that ensure timely recovery from outages or system failures."
- ISA/IEC 62443-2-1:2010, Clause 4.3.4 - SP Element 8
While SP Element 2 and 7 are also important, Element 8 is most directly relevant for ensuring rapid restoration of service after unexpected shutdowns.
References:
ISA/IEC 62443-2-1:2010 - SP Element 8
ISA/IEC 62443-1-1 - System availability principles
NEW QUESTION # 221
Which of the following is a recommended default rule for IACS firewalls?
Available Choices (select all choices that are correct)
Answer: D
NEW QUESTION # 222
Which of the following attacks relies on a human weakness to succeed?
Available Choices (select all choices that are correct)
Answer: A
Explanation:
Phishing is a type of cyberattack that relies on a human weakness to succeed. Phishing is the practice of sending fraudulent emails or other messages that appear to come from a legitimate source, such as a bank, a government agency, or a trusted person, in order to trick the recipient into revealing sensitive information, such as passwords, credit card numbers, or personal details, or into clicking on malicious links or attachments that may install malware or ransomware on their devices. Phishing is a common and effective way of compromising the security of industrial automation and control systems (IACS), as it can bypass technical security measures by exploiting the human factor. Phishing can also be used to gain access to the IACS network, to conduct reconnaissance, to launch further attacks, or to cause damage or disruption to the IACS operations. The ISA/IEC 62443 series of standards recognize phishing as a potential threat vector for IACS and provide guidance and best practices on how to prevent, detect, and respond to phishing attacks. Some of the recommended countermeasures include:
* Educating and training the IACS staff on how to recognize and avoid phishing emails and messages, and how to report any suspicious or malicious activity.
* Implementing and enforcing policies and procedures for email and message security, such as using strong passwords, verifying the sender's identity, and not opening or clicking on unknown or unsolicited links or attachments.
* Applying technical security controls, such as antivirus software, firewalls, spam filters, encryption, and authentication, to protect the IACS devices and network from phishing attacks.
* Monitoring and auditing the IACS network and devices for any signs of phishing attacks, such as anomalous or unauthorized traffic, connections, or activities, and taking appropriate actions to contain and mitigate the impact of any incidents. References:
* ISA/IEC 62443-1-1:2009, Security for industrial automation and control systems - Part 1-1:
Terminology, concepts and models1
* ISA/IEC 62443-2-1:2009, Security for industrial automation and control systems - Part 2-1:
Establishing an industrial automation and control systems security program2
* ISA/IEC 62443-2-4:2015, Security for industrial automation and control systems - Part 2-4: Security program requirements for IACS service providers3
* ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems - Part 3-3: System security requirements and security levels4
* ISA/IEC 62443-4-2:2019, Security for industrial automation and control systems - Part 4-2: Technical security requirements for IACS components5
NEW QUESTION # 223
Which layer specifies the rules for Modbus Application Protocol
Available Choices (select all choices that are correct)
Answer: A
Explanation:
The Modbus Application Protocol is a messaging protocol that provides client/server communication between devices connected on different types of buses or networks. It is positioned at level 7 of the OSI model, which is the application layer. The application layer is the highest level of the OSI model and defines the rules and formats for data exchange between applications. The Modbus Application Protocol is independent of the underlying communication layers and can be implemented using different transport protocols, such as TCP
/IP, serial, or Modbus Plus. The Modbus Application Protocol defines the function codes, data formats, and error codes for Modbus transactions123 References:
* MODBUS APPLICATION PROTOCOL SPECIFICATION V1
* Modbus - Wikipedia
* Overview of Modbus - EPICS support for Modbus - GitHub Pages
NEW QUESTION # 224
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