ISA-IEC-62443 Exam Topics Pdf, ISA-IEC-62443 Exam Objectives

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q189-Q194):

NEW QUESTION # 189
Which of the following PRIMARILY determines access privileges for user accounts?
Available Choices (select all choices that are correct)

Answer: A

Explanation:
Authorization security policy is the primary factor that determines access privileges for user accounts. Authorization security policy is the function of specifying access rights or privileges to resources, which is related to general information security and computer security, and to access control in particular1.
Authorization security policy defines who can access what resources, under what conditions, and for what purposes. Authorization security policy should be aligned with the business objectives and security requirements of the organization, and should be enforced by appropriate mechanisms and controls. Authorization security policy should also be reviewed and updated regularly to reflect changes in the environment, threats, and risks2. Authorization security policy is an essential part of the ISA/IEC 62443 standard, which provides a framework for securing industrial automation and control systems (IACS). The standard defines four security levels (SL) that represent the degree of protection against threats, and specifies the security capabilities that should be implemented for each SL. The standard also provides guidance on how to conduct a security risk assessment, how to define security zones and conduits, and how to apply security policies and procedures to the IACS environment34 . References: https://bing.com/search?
q=authorization+security+policy
https://learn.microsoft.com/en-us/aspnet/core/security/authorization/policies?view=aspnetcore-7.0


NEW QUESTION # 190
What type of attack is characterized by encrypting an organization's data and demanding payment for restoration?

Answer: C

Explanation:
Ransomware is a type of malicious software (malware) designed to block access to a computer system or data, typically by encrypting files, until a sum of money (ransom) is paid. This form of attack is increasingly targeting industrial automation and control system (IACS) environments due to the critical nature of these systems. Unlike phishing (which tricks users into revealing sensitive information) or DDoS attacks (which disrupt availability), ransomware specifically encrypts data and extorts the victim.
Reference: ISA/IEC 62443-3-2:2020, Annex B; ISA/IEC 62443-1-1:2007, Section 3.2.2; ISA/IEC 62443-2-1:
2009, Section 4.2.3.


NEW QUESTION # 191
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: D

Explanation:
During the Operation and Maintenance phase, the asset owner is responsible for ensuring that the IACS is integrated into their broader security program, including processes, training, and monitoring.
"The asset owner shall ensure that the IACS is incorporated into their operational and security governance programs, including process ownership, personnel responsibilities, and continuous security monitoring."
- ISA/IEC 62443-2-1:2010, Clause 4.3.2 - Organizational Security Measures This ensures that cybersecurity becomes a continuous organizational function, not a one-time setup or third- party responsibility.
References:
ISA/IEC 62443-2-1:2010 - Clause 4.3.2
ISA/IEC 62443-1-1 - Lifecycle Model, Operation Phase


NEW QUESTION # 192
Which characteristic is MOST closely associated with the deployment of a demilitarized zone (DMZ)?
Available Choices (select all choices that are correct)

Answer: B

Explanation:
In cybersecurity, a demilitarized zone (DMZ) refers to a physical or logical subnetwork that contains and exposes an organization's external-facing services to an untrusted network, typically the internet. The main characteristic of a DMZ is that it acts as a buffer zone between the public internet and the private network.
This allows for internet access through the firewall while keeping the internal network secure. Internet-facing servers are placed in the DMZ so that they are separated from the rest of the internal network. By doing so, if a server in the DMZ is compromised, the attacker would not have direct access to the internal network. This architecture is commonly used to host services such as web servers, mail servers, and FTP servers. Choice C is the most closely associated with the deployment of a DMZ as it allows for regulated and monitored internet access through a firewall.


NEW QUESTION # 193
What type of security level defines what a component or system is capable of meeting?
Available Choices (select all choices that are correct)

Answer: D

Explanation:
According to the IEC 62443 standard, a capability security level (SL-C) is defined as "the security level that a component or system is capable of meeting when it is properly configured and protected by an appropriate set of security countermeasures" 1. A component or system can have different SL-Cs for different security requirements, depending on its design and implementation. The SL-C is determined by testing the component or system against a set of security test cases that correspond to the security requirements. The SL-C is not dependent on the actual operational environment orconfiguration of the component or system, but rather on its inherent capabilities. References:
* IEC 62443 - Wikipedia


NEW QUESTION # 194
......

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