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[General] ISA-IEC-62443 Exam | 100% Free ISA/IEC 62443 Cybersecurity Fundamentals Speciali

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【General】 ISA-IEC-62443 Exam | 100% Free ISA/IEC 62443 Cybersecurity Fundamentals Speciali

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q47-Q52):NEW QUESTION # 47
If a system integrator is designing zones and conduits for an IACS network based on risk assessments, which part of the ISA/IEC 62443 standard guides this process?
  • A. Part 1-3: System security conformance metrics
  • B. Part 4-1: Secure product development lifecycle requirements
  • C. Part 3-2: Security risk assessment for system design
  • D. Part 2-1: Establishing an IACS security program
Answer: C
Explanation:
ISA/IEC 62443-3-2 specifically provides methodology and guidance for performing risk assessments and defining zones and conduits based on those assessments.
"This standard describes a process for conducting a cybersecurity risk assessment and defines the concept of zones and conduits for segmenting IACS. It provides guidance for assigning security levels and designing mitigation strategies accordingly."
- ISA/IEC 62443-3-2:2020, Clause 5.3 - Zones and Conduits
It is the key reference for system integrators during design and architecture phases of IACS security.
References:
ISA/IEC 62443-3-2:2020 - Clauses 5.2 and 5.3
ISA/IEC 62443-1-1 - Introduction to zones, conduits, and SL-T

NEW QUESTION # 48
In a defense-in-depth strategy, what is the purpose of role-based access control?
Available Choices (select all choices that are correct)
  • A. Ensures that users can access only certain devices on the network
  • B. Ensures that users can access systems from remote locations
  • C. Ensures that users correctly manage their username and password
  • D. Ensures that users can access only the functions they need for their job
Answer: D
Explanation:
Role-based access control (RBAC) is a method of restricting access to resources based on the roles of individual users within an organization. RBAC assigns permissions and responsibilities to roles, rather than to individual users, and then assigns users to those roles. This way, users can only perform the actions that are relevant and necessary for their role, and not access or modify any other resources that are beyond their scope of authority. RBAC is one of the security countermeasures that can be implemented in a defense-in-depth strategy, which is a layered approach to protect industrial automation and control systems (IACS) from cyber threats. RBAC can help prevent unauthorized access, misuse, or sabotage of IACS resources, as well as reduce the risk of human error or insider attacks.
References:
ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems - Part 3-3: System security requirements and security levels, Clause 5.3.2.11 ISA/IEC 62443-2-1:2010, Security for industrial automation and control systems - Part 2-1: Establishing an industrial automation and control systems security program, Clause 6.2.2.32 ISA/IEC 62443-4-1:2018, Security for industrial automation and control systems - Part 4-1: Product security development life-cycle requirements, Clause 5.2.3.23 ISA/IEC 62443-4-2:2019, Security for industrial automation and control systems - Part 4-2: Technical security requirements for IACS components, Clause 4.2.3.24

NEW QUESTION # 49
What are the two elements of the risk analysis category of an IACS?
  • A. Business rationale and risk identification and classification
  • B. Risk evaluation and risk identification
  • C. Business recovery and risk elimination or mitigation
  • D. Business rationale and risk reduction and avoidance
Answer: A
Explanation:
According to ISA/IEC 62443-3-2, the risk analysis phase in the IACS security lifecycle includes both the business rationale and the risk identification and classification. This ensures that risk decisions are based not only on technical vulnerability but also on business impact and operational context.
"The risk analysis process includes identification and classification of risks based on a defined business rationale. This ensures that the protection requirements are aligned with the organization's risk tolerance and operational priorities."
- ISA/IEC 62443-3-2:2020, Section 6.4 - Risk Assessment and SL Targeting The term business rationale refers to understanding the value and criticality of the asset or system in order to make informed security decisions.
References:
ISA/IEC 62443-3-2:2020 - Section 6.4
ISA/IEC 62443-2-1 - Section 4.3.2: Risk and business continuity alignment

NEW QUESTION # 50
Which is a reason for
and physical security regulations meeting a mixed resistance?
Available Choices (select all choices that are correct)
  • A. There are a limited number of enforced cybersecurity and physical security regulations.
  • B. Cybersecurity risks can best be managed individually and in isolation.
  • C. Regulations are voluntary documents.
  • D. Regulations contain only informative elements.
Answer: A
Explanation:
Cybersecurity and physical security regulations are intended to provide guidance and requirements for protecting industrial control systems from various threats and risks. However, these regulations may face mixed resistance from different stakeholders for various reasons. One of the reasons is that there are a limited number of enforced cybersecurity and physical security regulations, especially at the international level. This means that some regions or countries may have more stringent or comprehensive regulations than others, creating inconsistencies and challenges for cross-border cooperation and compliance. Moreover, some regulations may be outdated or not aligned with the current best practices and standards, such as ISA/IEC
62443, which may limit their effectiveness and applicability. Therefore, some organizations may prefer to follow voluntary standards or frameworks, such as ISA/IEC 62443, rather than mandatory regulations, as they may offer more flexibility and adaptability to the specific needs and contexts of each industrial control system. References:
ISA/IEC 62443 Standards to Secure Your Industrial Control System, page 3 Using the ISA/IEC 62443 Standard to Secure Your Control System, page 9

NEW QUESTION # 51
Which of the following is the underlying protocol for Ethernet/IP?
Available Choices (select all choices that are correct)
  • A. Object Linking and Embedding (OLE) for Process Control
  • B. Common Industrial Protocol
  • C. Highway Addressable Remote Transducer (HART)
  • D. Building Automation and Control Network (BACnet)
Answer: B
Explanation:
Ethernet/IP is an industrial network protocol that adapts the Common Industrial Protocol (CIP) to standard Ethernet. CIP is an object-oriented protocol that provides a unified communication architecture for various industrial automation applications, such as control, safety, security, energy, synchronization and motion, information and network management. CIP defines a set of messages and services for interacting with devices and data on the network, as well as a set of device profiles for consistent implementation of automation functions across different products. Ethernet/IP uses the transport and control protocols of standard Ethernet, such as TCP/IP and IEEE 802.3, to define the features and functions for its lower layers. Ethernet/IP also uses UDP to transport I/O messages and supports various network topologies, such as star, linear, ring and wireless.
Ethernet/IP is one of the leading industrial protocols in the United States and is widely used in a range of industries, such as factory, hybrid and process. Ethernet/IP is managed by ODVA, Inc., a global trade and standards development organization. References:
* EtherNet/IP - Wikipedia
* EtherNet/IP | ODVA Technologies | Industrial Automation

NEW QUESTION # 52
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