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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q88-Q93):

NEW QUESTION # 88
Which is the BEST deployment system for malicious code protection?
Available Choices (select all choices that are correct)

A. Zones and conduits
B. Application whitelistinq (AWL) OD.
C. IACS protocol converters
D. Network segmentation

Answer: B

Explanation:
Application whitelisting (AWL) is a technique that allows only authorized applications to run on a system, and blocks any unauthorized or malicious code from executing. AWL is one of the most effective methods for preventing malware infections and reducing the attack surface of a system. AWL can be implemented at different levels, such as the operating system, the network, or the application itself. AWL is especially useful forindustrial automation and control systems (IACS), which often run on legacy or proprietary platforms that are not compatible with traditional antivirus software or other security solutions. AWL can also help protect IACS from zero-day attacks, which exploit unknown vulnerabilities that have not been patched or detected by security vendors. AWL is recommended by the ISA/IEC 62443 standards as a key component of malicious code protection for IACS. According to the standards, AWL should be applied to all IACS components that support it, and should be configured and maintained according to the security policies and procedures of the organization. AWL should also be complemented by other security measures, such as network segmentation, zones and conduits, and patch management, to provide a defense-in-depth approach to IACS security. References:
* ISA/IEC 62443-3-3:2013, System security requirements and security levels, Section 5.2.3.41
* ISA/IEC 62443-2-1:2010, Establishing an industrial automation and control systems security program, Section 4.3.3.6.42
* ISA/IEC 62443-4-2:2019, Technical security requirements for IACS components, Section 4.2.3.43
* ISA/IEC 62443-3-2:2020, Security risk assessment for system design, Section 7.3.3.44
* ISA/IEC 62443-4-1:2018, Product development requirements, Section 5.2.3.45

NEW QUESTION # 89
Which of the following is an industry sector-specific standard?
Available Choices (select all choices that are correct)

A. API 1164
B. ISA-62443 (EC 62443)
C. D. ISO 27001
D. NIST SP800-82

Answer: A

Explanation:
API 1164 is an industry sector-specific standard that provides guidance on the cybersecurity of pipeline supervisory control and data acquisition (SCADA) systems. API stands for American Petroleum Institute, which is the largest U.S. trade association for the oil and natural gas industry. API 1164 was first published in
2004 and revised in 2009 and 2021. The latest version of the standard aligns with the ISA/IEC 62443 series of standards and incorporates the concepts of security levels, zones, and conduits. API 1164 covers the security lifecycle of pipeline SCADA systems, from risk assessment and policy development to implementation and maintenance. The standard also defines roles and responsibilities, security requirements, security controls, and security assessment methods for pipeline SCADA systems.
References:
* API 1164: Pipeline SCADA Security, Fourth Edition, September 2021
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 2.2.2, Industry Sector-Specific Standards
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 2.2.2, Industry Sector-Specific Standards

NEW QUESTION # 90
Which of the following is an activity that should trigger a review of the CSMS?
Available Choices (select all choices that are correct)

A. Security incident exposing previously unknown risk.
B. Budgeting
C. Organizational restructuring
D. New technical controls

Answer: A,C,D

Explanation:
According to the ISA/IEC 62443-2-1 standard, a review of the CSMS should be triggered by any changes that affect the cybersecurity risk of the industrial automation and control system (IACS), such as new technical controls, organizational restructuring, or security incidents1. Budgeting is not a trigger for CSMS review, unless it impacts the cybersecurity risk level or the CSMS itself2. References: 1: ISA/IEC 62443-2-1:2010, Section 4.3.3.3 2: A Practical Approach to Adopting the IEC 62443 Standards, ISAGCA Blog3

NEW QUESTION # 91
Which of the following is a cause for the increase in attacks on IACS?
Available Choices (select all choices that are correct)

A. Use of proprietary communications protocols
B. Fewer personnel with system knowledge having access to IACS
C. The move away from commercial off the shelf (COTS) systems, protocols, and networks
D. Knowledge of exploits and tools readily available on the Internet

Answer: A,D

Explanation:
One of the reasons for the increase in attacks on IACS is the availability of information and tools that can be used to exploit vulnerabilities in these systems. The Internet provides a platform for hackers, researchers, and activists to share their knowledge and techniques for compromising IACS. Some examples of such information and tools are:
* Stuxnet: A sophisticated malware that targeted the Iranian nuclear program in 2010. It exploited four zero-day vulnerabilities in Windows and Siemens software to infect and manipulate the programmable logic controllers (PLCs) that controlled the centrifuges. Stuxnet was widely analyzed and reported by the media and security experts, and its source code was leaked online1.
* Metasploit: A popular penetration testing framework that contains modules for exploiting various IACS components and protocols. For instance, Metasploit includes modules for attacking Modbus, DNP3, OPC, and Siemens S7 devices2.
* Shodan: A search engine that allows users to find devices connected to the Internet, such as webcams, routers, printers, and IACS components. Shodan can reveal the location, model, firmware, and
* configuration of these devices, which can be used by attackers to identify potential targets and vulnerabilities3.
* ICS-CERT: A website that provides alerts, advisories, and reports on IACS security issues and incidents. ICS-CERT also publishes vulnerability notes and mitigation recommendations for various IACS products and vendors4. These sources of information and tools can be useful for legitimate purposes, such as security testing, research, and education, but they can also be misused by malicious actors who want to disrupt, damage, or steal from IACS. Therefore, IACS owners and operators should be aware of the threats and risks posed by the Internet and implement appropriate security measures to protect their systems. References:
* The increase in attacks on Industrial Automation and Control Systems (IACS) can be attributed to several factors, including: A.Use of proprietary communications protocols:These can pose security risks because they may not have been designed with security in mind and are often not as well-tested against security threats as more standard protocols. C.Knowledge of exploits and tools readily available on the Internet:The availability of information about vulnerabilities and exploits on the internet has made it easier for attackers to target IACS.
* The other options, B and D, are incorrect because: B. The move towards commercial off-the-shelf (COTS) systems, protocols, and networks actually increases risk because these systems are more likely to be known and targeted by attackers, compared to proprietary systems which might benefit from security through obscurity. D. There is actually an increase in risk with more personnel with system knowledge because it enlarges the attack surface - each individual with system knowledge can potentially become a vector for an attack, either maliciously or accidentally.

NEW QUESTION # 92
Which of the following ISA-99 (IEC 62443) Reference Model levels is named correctly?
Available Choices (select all choices that are correct)

A. Level 4: Process
B. Level 3: Operations Management
C. Level 2: Quality Control
D. Level 1: Supervisory Control

Answer: B

Explanation:
The ISA-99/IEC 62443 standards for industrial automation and control systems security categorize network and system components into different levels based on their operational context. The correct name from the provided options for one of these levels is Level 3: Operations Management. This level typically encompasses systems that manage production control systems, including batch management, production scheduling, and overall factory operations. The other levels listed, such as Supervisory Control and Process, refer to different aspects of the system but are not named correctly in the options provided. Level 1 is correctly referred to as
"Basic Control," and Level 4 should be "Business Logistics" instead of "Process."

NEW QUESTION # 93
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