Exam ISA-IEC-62443 Cram Review & Cert ISA-IEC-62443 Guide

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The ISA ISA-IEC-62443 exam questions were developed by NewPassLeader in three formats. If you take enough practice tests on ISA-IEC-62443 practice exam software by NewPassLeader, you’ll be more comfortable when you walk in on ISA exam day. So, go with ISA-IEC-62443 Exam Questions that are prepared under the supervision of industry experts to expand your knowledge base and successfully pass the ISA-IEC-62443 exam on the first attempt.

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q157-Q162):

NEW QUESTION # 157
Which of the following is the underlying protocol for Ethernet/IP?
Available Choices (select all choices that are correct)

Answer: D


NEW QUESTION # 158
Which of the following is an element of security policy, organization, and awareness?
Available Choices (select all choices that are correct)

Answer: D


NEW QUESTION # 159
What is TRUE regarding safety systems?

Answer: C

Explanation:
Even the most modern and sophisticated safety systems can be defeated by an attacker. This statement is validated by the discovery of malware specifically targeting safety instrumented systems (SIS), such as the
"Triton/Trisis" malware that compromised the SIS of a petrochemical plant. Safety systems, while designed as independent protection layers, are not immune to cybersecurity vulnerabilities and require specific countermeasures. Integration, such as using Modbus TCP, does not inherently reduce risk to a tolerable level without additional controls.
Reference: ISA/IEC 62443-3-3:2013, Section 4.2.2; ISA/IEC 62443-1-1:2007, Section 3.2.4; ISA/IEC 62443-
2-1:2009, Section 4.2.3.2; TRITON/TRISIS incident case studies.


NEW QUESTION # 160
After receiving an approved patch from the JACS vendor, what is BEST practice for the asset owner to follow?

Answer: A

Explanation:
According to the ISA/IEC 62443 Cybersecurity Fundamentals Specialist resources, patches are software updates that fix bugs, vulnerabilities, or improve performance of a system. Patches are classified into three categories based on their urgency and impact: low, medium, and high. Low priority patches are those that have minimal or no impact on the system functionality or security, and can be applied at the next scheduled maintenance. Medium priority patches are those that have moderate impact on the system functionality or security, and should be applied within a reasonable time frame, such as three months. High priority patches are those that have significant or critical impact on the system functionality or security, and should be applied as soon as possible, preferably at the first unscheduled outage. Applying patches in a timely manner is a best practice for maintaining the security and reliability of an industrial automation and control system (IACS). References:
ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 4.3.2, Patch Management ISA/IEC 62443-2-1:2009, Security for industrial automation and control systems - Part 2-1: Establishing an industrial automation and control systems security program, Clause 5.3.2.2, Patch management ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems - Part 3-3: System security requirements and security levels, Clause 4.3.3.6.2, Patch management


NEW QUESTION # 161
Which of the following is the BEST reason for periodic audits?
Available Choices (select all choices that are correct)

Answer: B

Explanation:
Periodic audits are an essential part of the ISA/IEC 62443 cybersecurity standards, as they help to verify the effectiveness and compliance of the security program. According to the ISA/IEC 62443-2-1 standard, periodic audits should be conducted to evaluate the following aspects1:
* The security policies and procedures are consistent with the security requirements and objectives of the organization
* The security policies and procedures are implemented and enforced in accordance with the security program
* The security policies and procedures are reviewed and updated regularly to reflect changes in the threat landscape, the IACS environment, and the business needs
* The security performance indicators and metrics are measured and reported to the relevant stakeholders
* The security incidents and vulnerabilities are identified, analyzed, and resolved in a timely manner
* The security awareness and training programs are effective and aligned with the security roles and responsibilities of the personnel
* The security audits and assessments are conducted by qualified and independent auditors
* The security audit and assessment results are documented and communicated to the appropriate parties
* The security audit and assessment findings and recommendations are addressed and implemented in a prioritized and systematic way Periodic audits are not only a means to meet regulations or adhere to a schedule, but also a way to validate that the security policies and procedures are performing as intended and achieving the desired security outcomes. Periodic audits also help to identify gaps and weaknesses in the security program and provide opportunities for improvement and enhancement. References: Periodic audits are an essential part of the ISA/IEC 62443 cybersecurity
* standards, as they help to verify the effectiveness and compliance of the security program. According to the ISA/IEC 62443-2-1 standard, periodic audits should be conducted to evaluate the following aspects1:
* The security policies and procedures are consistent with the security requirements and objectives of the organization
* The security policies and procedures are implemented and enforced in accordance with the security program
* The security policies and procedures are reviewed and updated regularly to reflect changes in the threat landscape, the IACS environment, and the business needs
* The security performance indicators and metrics are measured and reported to the relevant stakeholders
* The security incidents and vulnerabilities are identified, analyzed, and resolved in a timely manner
* The security awareness and training programs are effective and aligned with the security roles and responsibilities of the personnel
* The security audits and assessments are conducted by qualified and independent auditors
* The security audit and assessment results are documented and communicated to the appropriate parties
* The security audit and assessment findings and recommendations are addressed and implemented in a prioritized and systematic way Periodic audits are not only a means to meet regulations or adhere to a schedule, but also a way to validate that the security policies and procedures are performing as intended and achieving the desired security outcomes. Periodic audits also help to identify gaps and weaknesses in the security program and provide opportunities for improvement and enhancement. References:


NEW QUESTION # 162
......

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