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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q110-Q115):

NEW QUESTION # 110
Within the National Institute of Standards and Technoloqv Cybersecuritv Framework v1.0 (NIST CSF), what is the status of the ISA 62443 standards?
Available Choices (select all choices that are correct)

Answer: B

Explanation:
The NIST CSF is a voluntary framework that provides a set of standards, guidelines, and best practices to help organizations manage cybersecurity risks. The NIST CSF consists of five core functions: Identify, Protect, Detect, Respond, and Recover. Each function is further divided into categories and subcategories that describe specific outcomes and activities. The NIST CSF also provides informative references that link the subcategories to existing standards, guidelines, and practices that can help organizations achieve the desired outcomes. The informative references are not mandatory or exhaustive, but rather serve as examples of possible sources of guidance. The ISA 62443 standards are used as informative references in the NIST CSF v1.0 for several subcategories, especially in the Protect and Detect functions. The ISA 62443 standards are a series of standards that provide a framework for securing industrial automation and control systems (IACS).
The ISA 62443 standards cover various aspects of IACS security, such as terminology, concepts, requirements, policies, procedures, and technical specifications. The ISA 62443 standards are aligned with the NIST CSF in terms of the core functions and the risk-based approach. Therefore, the ISA 62443 standards can provide useful guidance and best practices for organizations that use IACS and want to implement the NIST CSF. References:
* NIST Cybersecurity Framework - Official Site1
* Framework for Improving Critical Infrastructure Cybersecurity - Version 1.02
* ISA/IEC 62443 Standards - Official Site3
* ISA/IEC 62443 Compliance & Scoring | Centraleyes4


NEW QUESTION # 111
Why is it important for the asset owner to incorporate the IACS into its organization and security program during the Operation and Maintenance phase?

Answer: C

Explanation:
ISA/IEC 62443 places primary accountability for cybersecurity risk on the asset owner, particularly during the Operation and Maintenance phase of the IACS lifecycle. This phase is where systems run for years or decades, and cybersecurity effectiveness depends less on design intent and more on how people and processes operate daily.
Step 1: Lifecycle responsibility of the asset owner
ISA/IEC 62443-2-1 requires the asset owner to establish, operate, and maintain an IACS Security Program.
During operation, cybersecurity controls must be embedded into routine organizational activities such as operations, maintenance, incident handling, training, and change management.
Step 2: Integration with people and processes
The standard explicitly recognizes that technology alone cannot manage cybersecurity risk. Operators, engineers, maintenance staff, and managers must understand their cybersecurity roles. Embedding IACS security into organizational processes ensures consistent execution across shifts, teams, and sites.
Step 3: Avoiding incorrect interpretations
Immediate decommissioning is not an operational objective. Allowing unrestricted remote updates by suppliers contradicts governance requirements. Granting full control to maintenance providers violates the asset owner's accountability.
Step 4: Operational resilience
By embedding IACS security into organizational culture and workflows, the asset owner ensures that security measures are sustained, monitored, and improved over time.
Therefore, the correct reason is to embed the IACS within organizational processes and people.


NEW QUESTION # 112
Which factor drives the selection of countermeasures?
Available Choices (select all choices that are correct)

Answer: A


NEW QUESTION # 113
What are three possible entry points (pathways) that could be used for launching a cyber attack?
Available Choices (select all choices that are correct)

Answer: A

Explanation:
A cyber attack is an attempt to compromise the confidentiality, integrity, or availability of a computer system or network by exploiting its vulnerabilities. A cyber attack can be launched from various entry points, which are the pathways that allow an attacker to access a target system or network. According to the ISA/IEC
62443-3-2 standard, which defines a method for conducting a security risk assessment for industrial automation and control systems (IACS), some of the possible entry points for a cyber attack are:
* LAN: A local area network (LAN) is a network that connects devices within a limited geographic area, such as a building or a campus. A LAN can be an entry point for a cyber attack if an attacker gains physical or logical access to the network devices, such as switches, routers, firewalls, or servers. An attacker can use various techniques to access a LAN, such as network scanning, spoofing, sniffing, or hijacking. An attacker can also exploit vulnerabilities in the network protocols, services, or applications that run on the LAN. A cyber attack on a LAN can affect the communication and operation of the devices and systems connected to the network, such as IACS.
* Portable media: Portable media are removable storage devices that can be used to transfer data between different systems or devices, such as USB flash drives, CDs, DVDs, or external hard drives. Portable media can be an entry point for a cyber attack if an attacker uses them to introduce malicious code or data into a target system or device. An attacker can use various techniques to infect portable media, such as autorun, social engineering, or physical tampering. An attacker can also exploit vulnerabilities in the operating systems, drivers, or applications that interact with portable media. A cyber attack using portable media can affect the functionality and security of the systems or devices that use them, such as IACS.
* Wireless: Wireless is a technology that enables communication and data transmission without physical wires or cables, such as Wi-Fi, Bluetooth, or cellular networks. Wireless can be an entry point for a cyber attack if an attacker intercepts, modifies, or disrupts the wireless signals or data. An attacker can use various techniques to access wireless networks or devices, such as cracking, jamming, or eavesdropping. An attacker can also exploit vulnerabilities in the wireless protocols, standards, or encryption methods. A cyber attack on wireless can affect the availability and reliability of the wireless communication and data transmission, such as IACS.
Therefore, LAN, portable media, and wireless are three possible entry points that could be used for launching a cyber attack. References:
* Cybersecurity Risk Assessment According to ISA/IEC 62443-3-21
* ISA/IEC 62443 Series of Standards2


NEW QUESTION # 114
What is a key activity in the Maintain phase?

Answer: B

Explanation:
The "Maintain" phase is the fourth phase of the IACS Cybersecurity Lifecycle described in ISA/IEC 62443-2-
1. A key activity in this phase is managing changes (also known as "change management"). This activity ensures that any modifications to the IACS environment (hardware, software, processes, etc.) are evaluated for cybersecurity impact, and proper controls are implemented to maintain the intended security posture.
While risk assessment is typically done in the Assess phase, and allocating assets and designing countermeasures belong to earlier phases, managing changes is essential for ensuring ongoing compliance and effectiveness of cybersecurity controls over time.
Reference: ISA/IEC 62443-2-1:2009, Section 5.6 (Maintain Phase), Table 3 (CSMS lifecycle activities).


NEW QUESTION # 115
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