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| Section | Objectives |
|---|---|
| Addressing Risk with Selected Security Counter Measures | - Firewalls and network security devices - Anti-virus and endpoint protection - Patch management - Virtual Private Networks (VPNs) |
| Addressing Risk with Implementation Measures | - Industrial network architecture and segmentation - Zones and conduits model - Defense-in-depth strategy - Access control principles |
| Understanding the Current Industrial Security Environment | - Convergence of IT and OT - Current state of industrial control systems security - Security challenges in OT environments |
| Validating or Verifying the Security of Systems | - Auditing and compliance - Continuous improvement of security measures - Security validation and verification techniques |
| Monitoring and Improving the CSMS | - Security lifecycle management - Incident detection and response - Continuous monitoring of IACS cybersecurity |
| Addressing Risk with Security Policy, Organization, and Awareness | - Security policies and procedures - Security awareness and training - Organizational security roles and responsibilities |
| Risk Analysis | - Cybersecurity risk assessment concepts - Risk management fundamentals - Risk and vulnerability analysis techniques |
| Creating A Security Program | - Security management organization - Defining information security policy - Developing a long-term security program |
| How Cyberattacks Happen | - Case studies of industrial cyber incidents - Cyber threats and attack vectors - Vulnerabilities in industrial systems |
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NEW QUESTION # 12
What are the connections between security zones called?
Available Choices (select all choices that are correct)
Answer: A
Explanation:
According to the ISA/IEC 62443 standard, the connections between security zones are called conduits. A conduit is defined as a logical or physical grouping of communication channels connecting two or more zones that share common security requirements. A conduit can be used to control and monitor the data flow between zones, and to apply security measures such as encryption, authentication, filtering, or logging. A conduit can also be used to isolate zones from each other in case of a security breach or incident. A conduit can be implemented using various technologies, such as firewalls, routers, switches, cables, or wireless links.
However, these technologies are not synonymous with conduits, as they are only components of a conduit. A firewall, for example, can be used to create multiple conduits between different zones, or to protect a single zone from external threats. Therefore, the other options (firewalls, tunnels, and pathways) are not correct names for the connections between security zones. References:
ISA/IEC 62443-3-2:2016 - Security for industrial automation and control systems - Part 3-2: Security risk assessment and system design1 ISA/IEC 62443-3-3:2013 - Security for industrial automation and control systems - Part 3-3: System security requirements and security levels2 Zones and Conduits | Tofino Industrial Security Solution3 Key Concepts of ISA/IEC 62443: Zones & Security Levels | Dragos4
NEW QUESTION # 13
Which is a role of the application layer?
Available Choices (select all choices that are correct)
Answer: C,D
Explanation:
The application layer is the topmost layer of the OSI model, which provides the interface between the user and the network. It includes protocols specific to network applications such as email, file transfer, and reading data registers in a PLC. These protocols deliver and format information, possibly with encryption and security, to ensure reliable and meaningful communication between different applications. The application layer does not include user applications, which are separate from the network protocols. The application layer also does not provide the mechanism for opening, closing, and managing a session between end-user application processes, which is the function of the session layer. References:
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, page 181
* Using the ISA/IEC 62443 Standards to Secure Your Control System, page 82 The application layer in network protocols, such as in the OSI model or the TCP/IP protocol suite, is primarily responsible for providing services directly to user applications. This layer is involved in:
* Option A: Including protocols specific to network applications such as email, file transfer, and industrial protocols like reading data registers in a Programmable Logic Controller (PLC). This is a core function of the application layer as it facilitates specific high-level networking capabilities.
* Option D: Delivering and formatting information, which can include encryption and ensuring the security of data as it is transmitted across the network. This includes protocols like HTTP for web browsing which can encrypt data via HTTPS, SMTP for secure email transmission, and FTP for secure file transfer.
NEW QUESTION # 14
Which of the following BEST describes a control system?
Answer: B
Explanation:
A control system, particularly in the context of IACS, is defined as a collection of hardware and software components used to monitor and control industrial processes. This includes PLCs, RTUs, SCADA software, HMIs, and communication networks.
"Control system: A set of hardware and software components that work together to monitor and control industrial or process operations."
- ISA/IEC 62443-1-1:2007, Clause 3.3.5 - Terminology
While the other options describe security functions or consequences, only Option C accurately describes what a control system is.
References:
ISA/IEC 62443-1-1:2007 - Clause 3.3.5
ISA/IEC 62443-2-1 - Asset definitions
NEW QUESTION # 15
What is a feature of an asymmetric key?
Available Choices (select all choices that are correct)
Answer: C
NEW QUESTION # 16
A company discovers malware on a portable USB device used within their IACS environment. According to the document, which SP Element and controls would be MOST relevant to address this issue?
Answer: A
Explanation:
According to ISA/IEC 62443-2-1, SP Element 4 is focused on system integrity and includes controls such as component hardening and managing dedicated portable media (e.g., USB drives). These controls help mitigate malware risks from removable devices.
"SP Element 4: System integrity. This element includes controls for system hardening and the use of dedicated, protected portable media to reduce infection risk and prevent unauthorized software installation."
- ISA/IEC 62443-2-1:2010, Clause 4.3.4 - SP Elements
While SP Element 7 (Incident Handling) may be involved post-discovery, the primary preventive control is under SP Element 4.
References:
ISA/IEC 62443-2-1:2010 - Clause 4.3.4, Table 2 - SP Element 4
ISA/IEC 62443-2-4 - Security controls for service providers managing portable devices
NEW QUESTION # 17
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