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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: 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 2: Security Operations & Incident Response | 20% | - Monitoring, maintenance and continuous improvement - Cybersecurity Management System (CSMS) - 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: Access Control & Identity Management | 15% | - Role-based access control - Security policies and procedures - User authentication and authorization |
| Topic 5: Industrial Automation and Control Systems (IACS) Overview | 15% | - Differences between IT and OT security - IACS components, architectures and protocols - Cybersecurity importance in industrial environments |
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NEW QUESTION # 119
Under User Access Control (SP Element 6), which of the following is included in USER 1 - Identification and Authentication?
Answer: B
Explanation:
SP Element 6 in ISA/IEC 62443-2-1 addresses User Access Control, ensuring that only authorized users can access IACS resources.
Step 1: Definition of USER 1
USER 1 corresponds to Identification and Authentication Control (IAC), the first foundational requirement. It focuses on verifying the identity of users before granting access.
Step 2: Password protection
Password mechanisms are a fundamental form of user authentication and are explicitly included under identification and authentication requirements.
Step 3: Why other options are incorrect
Mutual authentication applies to system-to-system authentication. Backup restoration and incident handling belong to different SP Elements.
Step 4: Security intent
By enforcing password protection, the asset owner ensures accountability, traceability, and prevention of unauthorized access.
Therefore, the correct answer is Password protection.
NEW QUESTION # 120
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
NEW QUESTION # 121
Multiuser accounts and shared passwords inherently carry which of the followinq risks?
Available Choices (select all choices that are correct)
Answer: A,C
Explanation:
Multiuser accounts and shared passwords are accounts and passwords that are used by more than one person to access a system or a resource. They inherently carry the risk of unauthorized access, which means that someone who is not authorized or intended to use the account or password can gain access to the system or resource, and potentially compromise its confidentiality, integrity, or availability. For example, if a multiuser account and password are shared among several operators of an industrial automation and control system (IACS), an attacker who obtains the password can use the account to access the IACS and perform malicious actions, such as changing the system settings, deleting data, or disrupting the process. Multiuser accounts and shared passwords also make it difficult to track and audit the activities of individual users, and to enforce the principle of least privilege, which states that users should only have the minimum level of access required to perform their tasks. Therefore, the ISA/IEC 62443 standards recommend avoiding the use of multiuser accounts and shared passwords, and instead using individual accounts and strong passwords for each user, and implementing authentication and authorization mechanisms to control the access to the IACS. References:
* ISA/IEC 62443-3-3:2013 - Security for industrial automation and control systems - Part 3-3: System security requirements and security levels1
* 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 Cybersecurity Fundamentals Specialist Training Course3
Shared passwords and multiuser accounts pose specific risks, notably unauthorized access and privilege escalation. In ISA/IEC 62443's framework, these practices are discouraged because they complicate the attribution of actions to individual users and increase the likelihood that accounts can be used beyond their intended scope. Unauthorized access occurs when individuals exploit the shared nature of an account to gain entry to systems or data that they should not access. Privilege escalation can happen when users leverage shared accounts to perform actions at higher permission levels than those assigned to their personal accounts.
Conversely, buffer overflows and race conditions are types of vulnerabilities or programming errors, not directly associated with the risks of multiuser accounts or shared passwords.
NEW QUESTION # 122
What do packet filter firewalls examine?
Available Choices (select all choices that are correct)
Answer: A
Explanation:
Packet filter firewalls, as defined by ISA/IEC 62443 standards on cybersecurity, primarily examine the source, destination, and ports in the header of each packet. This type of firewall does not inspect the packet content deeply (such as its structure or sequence) or maintain awareness of the relationships between packets in a session. Instead, it operates at a more superficial level, filtering packets based solely on IP addresses and TCP/UDP ports. This approach allows packet filter firewalls to quickly process and either accept or block packets based on these predefined criteria without delving into the complexities of session management or the content of the packets up to the application layer.
NEW QUESTION # 123
What makes patching in IACS environments particularly complex?
Answer: C
Explanation:
Patching in Industrial Automation and Control Systems (IACS) is complex primarily due to:
The need to maintain continuous operations
Strict safety and reliability requirements
The risk of introducing unintended consequences through updates
"Unlike IT environments, IACS patching is constrained by the requirement to maintain availability and ensure safety. Patches must be tested in staging environments and applied during maintenance windows to avoid disrupting operations."
- ISA/IEC 62443-2-3:2015, Clause 6.1 - Patch Management Process
This makes patch management a risk-based and carefully scheduled activity, not an automatic or rapid one.
References:
ISA/IEC 62443-2-3:2015 - Clause 6.1
ISA/IEC 62443-2-1:2010 - Clause 4.3.4.3 - Change Management
NEW QUESTION # 124
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