PASS ISA-IEC-62443 EXAM WITH PERFECT DETAILED ISA-IEC-62443 ANSWERS BY ITEXAMREVIEW

Pass ISA-IEC-62443 Exam with Perfect Detailed ISA-IEC-62443 Answers by ITexamReview

Pass ISA-IEC-62443 Exam with Perfect Detailed ISA-IEC-62443 Answers by ITexamReview

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q61-Q66):

NEW QUESTION # 61
What do packet filter firewalls examine?
Available Choices (select all choices that are correct)

  • A. Only the source, destination, and ports in the header of each packet
  • B. Every incoming packet up to the application layer
  • C. The relationships between packets in a session
  • D. The packet structure and sequence

Answer: A


NEW QUESTION # 62
Which statement is TRUE reqardinq application of patches in an IACS environment?
Available Choices (select all choices that are correct)

  • A. Patches should be applied based on the organization's risk assessment.
  • B. Patches should be applied within one month of availability.
  • C. Patches never should be applied in an IACS environment.
  • D. Patches should be applied as soon as they are available.

Answer: A

Explanation:
Patches are software updates that fix bugs, vulnerabilities, or improve performance or functionality. Patches are important for maintaining the security and reliability of an IACS environment, but they also pose some challenges and risks. Applying patches in an IACS environment is not as simple as in an IT environment, because patches may affect the availability, integrity, or safety of the IACS. Therefore, patches should not be applied blindly or automatically, but based on the organization's risk assessment. The risk assessment should consider the following factors: 1
* The severity and likelihood of the vulnerability that the patch addresses
* The impact of the patch on the IACS functionality and performance
* The compatibility of the patch with the IACS components and configuration
* The availability of a backup or recovery plan in case the patch fails or causes problems
* The testing and validation of the patch before applying it to the production system
* The communication and coordination with the stakeholders involved in the patching process
* The documentation and auditing of the patching activities and results References: ISA TR62443-2-3 - Security for industrial automation and control systems, Part 2-3: Patch management in the IACS environment


NEW QUESTION # 63
In which layer is the physical address assigned?
Available Choices (select all choices that are correct)

  • A. Layer 1
  • B. Layer 2
  • C. Layer 7
  • D. Layer 3

Answer: B

Explanation:
According to the OSI model, the physical address is assigned in the layer 2, also known as the data link layer.
The physical address is a unique identifier for each device on a network, such as a MAC address or a serial number. The data link layer is responsible for transferring data between adjacent nodes on a network, using the physical address to identify the source and destination of each frame. The data link layer also provides error detection and correction, flow control, and media access control. References: ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Prep, section 2.2; ISA/IEC 62443 Standards to Secure Your Industrial Control System, section 3.1.2.


NEW QUESTION # 64
What are the two sublayers of Layer 2?
Available Choices (select all choices that are correct)

  • A. LLC and MAC
  • B. HIDS and NIDS
  • C. VLAN and VPN
  • D. OPC and DCOM

Answer: A

Explanation:
Layer 2 of the OSI model is the data link layer, which is responsible for transferring data frames between nodes on a network segment. The data link layer is divided into two sublayers: logical link control (LLC) and media access control (MAC). The LLC sublayer deals with issues common to both dedicated and broadcast links, such as framing, flow control, and error control. The MAC sublayer deals with issues specific to broadcast links, such as how to access the shared medium and avoid collisions. The LLC and MAC sublayers are not related to the ISA/IEC 62443 cybersecurity standards, which focus on the security of industrial automation and control systems (IACS). References:https://www.baeldung.com/cs/data-link-sub-layers
https://bing.com/search?q=Layer+2+sublayers


NEW QUESTION # 65
Which of the following ISA-99 (IEC 62443) Reference Model levels is named correctly?
Available Choices (select all choices that are correct)

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

Answer: A


NEW QUESTION # 66
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