THE BEST ISA CERTIFICATION ISA-IEC-62443 EXAM TRAINING MODE RELEASED

The best ISA certification ISA-IEC-62443 exam training mode released

The best ISA certification ISA-IEC-62443 exam training mode released

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q70-Q75):

NEW QUESTION # 70
How many element qroups are in the "Addressinq Risk" CSMS cateqorv?
Available Choices (select all choices that are correct)

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: A


NEW QUESTION # 71
Which statement is TRUE regarding Intrusion Detection Systems (IDS)?
Available Choices (select all choices that are correct)

  • A. They are very inexpensive to design and deploy.
  • B. They are effective against known vulnerabilities.
  • C. Modern IDS recognize IACS devices by default.
  • D. They require a small amount of care and feeding

Answer: B

Explanation:
Intrusion detection systems (IDS) are tools that monitor network traffic and detect suspicious or malicious activity based on predefined rules or signatures. They are effective against known vulnerabilities, as they can alert the system administrators or security personnel when they encounter a match with a known attack pattern or behavior. However, IDS have some limitations and challenges, especially when applied to industrial automation and control systems (IACS). Some of these are:
* Modern IDS do not recognize IACS devices by default, as they are designed for general-purpose IT networks and protocols. Therefore, they may generate false positives or negatives when dealing with IACS-specific devices, protocols, or traffic patterns. To overcome this, IDS need to be customized or adapted to the IACS environment and context, which may require additional expertise and resources.
* They are not very inexpensive to design and deploy, as they require careful planning, configuration, testing, and maintenance. They also need to be integrated with other security tools and processes, such as firewalls, antivirus, patch management, incident response, etc. Moreover, they may introduce additional costs and risks, such as network performance degradation, data privacy issues, or legal liabilities.
* They are not effective against unknown or zero-day vulnerabilities, as they rely on predefined rules or signatures that may not cover all possible attack scenarios or techniques. Therefore, they may fail to detect novel or sophisticated attacks that exploit new or undiscovered vulnerabilities. To mitigate this, IDS need to be complemented with other security measures, such as anomaly detection, threat intelligence, or machine learning.
* They require a significant amount of care and feeding, as they need to be constantly updated, tuned, and monitored. They also generate a large amount of data and alerts, which may overwhelm the system administrators or security personnel. Therefore, they need to be supported by adequate tools and processes, such as data analysis, alert filtering, prioritization, correlation, or visualization.
References: ISA/IEC 62443-2-1:2010 - Establishing an industrial automation and control system security program, ISA/IEC 62443-3-3:2013 - System security requirements and security levels, ISA/IEC 62443 Cybersecurity Fundamentals Specialist Training Course, [Enhancing Modbus/TCP-Based Industrial Automation and Control Systems Security Using Intrusion Detection Systems]


NEW QUESTION # 72
Which of the following refers to internal rules that govern how an organization protects critical system
resources?
Available Choices (select all choices that are correct)

  • A. Formal guidance
  • B. Security policy
    D- Code of conduct
  • C. Legislation

Answer: B


NEW QUESTION # 73
What is the definition of "defense in depth" when referring to
Available Choices (select all choices that are correct)

  • A. Using countermeasures that have intrinsic technical depth.
  • B. Aligning all resources to provide a broad technical gauntlet
  • C. Requiring a minimum distance requirement between security assets
  • D. Applying multiple countermeasures in a layered or stepwise manner

Answer: D


NEW QUESTION # 74
What are the connections between security zones called?
Available Choices (select all choices that are correct)

  • A. Pathways
  • B. Conduits
  • C. Firewalls
  • D. Tunnels

Answer: B

Explanation:
According to the ISA/IEC 62443 standard, the connections between security zones are called conduits. A conduit is defined as a logical or physical grouping of communication channels connecting two or more zones that share common security requirements. A conduit can be used to control and monitor the data flow between zones, and to apply security measures such as encryption, authentication, filtering, or logging. A conduit can also be used to isolate zones from each other in case of a security breach or incident. A conduit can be implemented using various technologies, such as firewalls, routers, switches, cables, or wireless links.
However, these technologies are not synonymous with conduits, as they are only components of a conduit. A firewall, for example, can be used to create multiple conduits between different zones, or to protect a single zone fromexternal threats. Therefore, the other options (firewalls, tunnels, and pathways) are not correct names for the connections between security zones. References:
* ISA/IEC 62443-3-2:2016 - Security for industrial automation and control systems - Part 3-2: Security risk assessment and system design1
* ISA/IEC 62443-3-3:2013 - Security for industrial automation and control systems - Part 3-3: System security requirements and security levels2
* Zones and Conduits | Tofino Industrial Security Solution3
* Key Concepts of ISA/IEC 62443: Zones & Security Levels | Dragos4


NEW QUESTION # 75
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