2025年最新のISA-IEC-62443問題集レビュー専門クイズ学習材料
ISA-IEC-62443テスト準備トレーニング練習試験問題 練習テスト
質問 # 14
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
正解：C
質問 # 15
Electronic security, as defined in ANSI/ISA-99.00.01:2007. includes which of the following?
Available Choices (select all choices that are correct)
- A. Computers, networks, operating systems, applications, and other programmable configurable components of the system
- B. Personnel, policies, and procedures related to the security of computers, networks. PLCs, and other programmable configurable components of the system
- C. Security guidelines for the proper configuration of IACS computers and operating systems
- D. Security guidelines for the proper configuration of IACS PLCs and other programmable configurable components of the system
正解：A、B
解説：
In ANSI/ISA-99.00.01:2007, which is part of the ISA/IEC 62443 standards, electronic security encompasses both the technical and human aspects of cybersecurity within industrial automated and control systems (IACS). Option B correctly highlights components such as computers, networks, operating systems, applications, and other programmable configurable components which are intrinsic to the system's electronic security framework. Option C is also correct as it includes the personnel, policies, andprocedures which play a crucial role in securing these systems. This emphasizes that security is not only about the technological solutions but also about managing human elements and organizational processes effectively.ISA/IEC 62443 Cybersecurity Fundamentals References:
* ISA/IEC 62443 standards focus on the holistic nature of security which is clearly supported by including both the technological (Option B) and human elements (Option C) in the definition of electronic security.
質問 # 16
What is OPC?
Available Choices (select all choices that are correct)
- A. An open standard protocol for the communication of real-time data between devices from different manufacturers
- B. An open standard protocol for real-time field bus communication between automation technology devices
- C. A vendor-specific proprietary protocol for the communication of real-time plant data between control devices
- D. An open standard serial communications protocol widely used in industrial manufacturing environments
正解：A
解説：
OPC stands for Open Platform Communications, and it is a series of standards and specifications for industrial telecommunication based on Object Linking and Embedding (OLE) for process control. It allows the communication of real-time data between devices from different manufacturers using various data transportation technologies, such as Microsoft's OLE, COM, DCOM, .NET, XML, and TCP123. OPC is not a protocolitself, but rather a standardized approach for data connectivity supported by the OPC Foundation3. OPC is widely used in industrial automation and control systems, as well as other industries, to achieve interoperability and integration between different applications and devices3.
A is incorrect, because OPC is not a field bus protocol, but rather a standard for data exchange between devices that may use different field bus protocols, such as Modbus, Profibus, or Ethernet/IP2. C is incorrect, because OPC is not a serial communications protocol, but rather a standard that can use various data transportation technologies, including serial, Ethernet, or wireless2. D is incorrect, because OPC is not a vendor-specific proprietary protocol, but rather an open standard that can be implemented by any vendor or device that supports the OPC specifications3. References: 1: Open Platform Communications - Wikipedia 2: What is OPC Protocol - The Automization 3: What is OPC? - OPC Foundation
質問 # 17
Which of the following provides the overall conceptual basis in the design of an appropriate security program?
Available Choices (select all choices that are correct)
- A. Asset model
- B. Reference model
- C. Zone model
- D. Reference architecture
正解：B
解説：
The reference model provides the overall conceptual basis in the design of an appropriate security program. It defines the common terminology, concepts, and models that can be used by all stakeholders responsible for IACS security. The reference model describes the general characteristics of IACS, the typical threats and vulnerabilities, the security lifecycle phases, and the security levels. The reference model also introduces the concepts of zones and conduits, which are used to group and isolate assets with similar security requirements and to control the communication between them. Referenceshttps://www.cisco.com/c/en/us/td/docs/solutions/Verticals/IoT_Security_Lab/IEC62443_WP.pd
https://www.cisco.com/c/en/us/td/docs/solutions/Verticals/IoT_Security_Lab/IEC62443_WP.pdf
質問 # 18
What are three possible entry points (pathways) that could be used for launching a cyber attack?
Available Choices (select all choices that are correct)
- A. LAN, power source, and wireless OD.
- B. LAN, portable media, and hard drives
- C. LAN, WAN, and hard drive
- D. LAN, portable media, and wireless
正解：D
質問 # 19
Which of the following is the BEST example of detection-in-depth best practices?
Available Choices (select all choices that are correct)
- A. Role-based access control and VPNs
- B. IDS sensors deployed within multiple zones in the production environment
- C. Firewalls and unexpected protocols being used
- D. Role-based access control and unusual data transfer patterns
正解：B
解説：
The best practice for detection-in-depth according to ISA/IEC 62443 involves layering different types of security controls that operate effectively under multiple scenarios and across various zones within an environment. IDS (Intrusion Detection Systems) sensors deployed across multiple zones within a production environment exemplify this strategy. By positioning sensors in various strategic locations, organizations can monitor for anomalous activities and potential threats throughout their network, thus enhancing their ability to detect and respond to incidents before they escalate. This deployment aligns with the ISA/IEC 62443 focus on comprehensive coverage and redundancy in cybersecurity mechanisms, contrasting with relying solely on perimeter defenses or single-point security solutions.
質問 # 20
Which of the following is the BEST example of detection-in-depth best practices?
Available Choices (select all choices that are correct)
- A. Role-based access control and VPNs
- B. IDS sensors deployed within multiple zones in the production environment
- C. Firewalls and unexpected protocols being used
- D. Role-based access control and unusual data transfer patterns
正解：B
質問 # 21
Using the risk matrix below, what is the risk of a medium likelihood event with high consequence?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
正解：B
質問 # 22
Which is a role of the application layer?
Available Choices (select all choices that are correct)
- A. Includes user applications specific to network applications such as email, file transfer, and reading data
registers in a PLC - B. Includes protocols specific to network applications such as email, file transfer, and reading data registers
in a PLC - C. Provides the mechanism for opening, closing, and managing a session between end-user application
processes - D. Delivers and formats information, possibly with encryption and security
正解：A
質問 # 23
After receiving an approved patch from the JACS vendor, what is BEST practice for the asset owner to follow?
- A. If a high priority, apply the patch at the first unscheduled outage.
- B. If no problems are experienced with the current IACS, it is not necessary to apply the patch.
- C. If a low priority, there is no need to apply the patch.
- D. If a medium priority, schedule the installation within three months after receipt.
正解：A
解説：
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
質問 # 24
Which of the following is an element of monitoring and improving a CSMS?
Available Choices (select all choices that are correct)
- A. Increase in staff training and security awareness
- B. Review of system logs and other key data files
- C. Restricted access to the industrial control system to an as-needed basis
- D. Significant changes in identified risk round in periodic reassessments
正解：A、B
解説：
Monitoring and improving a Cybersecurity Management System (CSMS) as per ISA/IEC 62443 standards involves several key activities that ensure the system remains effective and responsive to emerging threats.
Two critical elements of this ongoing process are:
* A. Increase in staff training and security awareness:Regular training and increasing security awareness among staff are vital to maintaining a secure operating environment. This proactive measure helps in reducing human error and enhancing the ability to respond effectively to cybersecurity incidents.
* D. Review of system logs and other key data files:Continuous review and analysis of system logs and other relevant data files are essential for detecting, investigating, and responding to potential security incidents. This monitoring helps in identifying anomalies that may indicate a security breach or operational issues needing attention.
質問 # 25
Which is the PRIMARY responsibility of the network layer of the Open Systems Interconnection (OSI) model?
Available Choices (select all choices that are correct)
- A. Handles the physics of getting a message from one device to another
- B. Gives transparent transfer of data between end users
- C. Forwards packets, including routing through intermediate routers
- D. Provides the rules for framing, converting electrical signals to data
正解：C
解説：
The primary responsibility of the network layer of the Open Systems Interconnection (OSI) model is to forward packets, including routing through intermediate routers. The network layer is the third layer from the bottom of the OSI model, and it is responsible for maintaining the quality of the data and passing and transmitting it from its source to its destination. The network layer also assigns logical addresses to devices, such as IP addresses, and uses various routing algorithms to determine the best path for the packets to travel.
The network layer operates on packets, which are units of data that contain the source and destination addresses, as well as the payload. The network layer forwards packets from one node to another, using routers to switch packets between different networks. The network layer also handles host-to-host delivery, which means that it ensures that the packets reach the correct destination host.
The other choices are not correct because:
* B. Gives transparent transfer of data between end users. This is the responsibility of the transport layer, which is the fourth layer from the bottom of the OSI model. The transport layer provides reliable and error-free data transfer between end users, using protocols such as TCP and UDP. The transport layer operates on segments, which are units of data that contain the source and destination port numbers, as well as the payload. The transport layer also handles flow control, congestion control, and multiplexing.
* C. Provides the rules for framing, converting electrical signals to data. This is the responsibility of the data link layer, which is the second layer from the bottom of the OSI model. The data link layer provides the means for transferring data between adjacent nodes on a network, using protocols such as Ethernet and WiFi. The data link layer operates on frames, which are units of data that contain the source and destination MAC addresses, as well as the payload. The data link layer also handles error detection, error correction, and media access control.
* D. Handles the physics of getting a message from one device to another. This is the responsibility of the physical layer, which is the lowest layer of the OSI model. The physical layer provides the means for transmitting bits over a physical medium, such as copper wire, fiber optic cable, or radio waves. The physical layer operates on bits, which are the smallest units of data that can be either 0 or 1. The physical layer also handles modulation, demodulation, encoding, decoding, and synchronization.
References:
* The OSI Model - The 7 Layers of Networking Explained in Plain English1
* Network Layer in OSI Model2
* OSI model3
質問 # 26
Which statement is TRUE reqardinq application of patches in an IACS environment?
Available Choices (select all choices that are correct)
- A. Patches never should be applied in an IACS environment.
- B. Patches should be applied as soon as they are available.
- C. Patches should be applied within one month of availability.
- D. Patches should be applied based on the organization's risk assessment.
正解：D
解説：
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
質問 # 27
Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?
Available Choices (select all choices that are correct)
- A. Modbus has no known security vulnerabilities, so firewall rules are simple to implement.
- B. Modbus is a proprietary protocol that is widely supported by vendors.
- C. Modbus uses a single master to communicate with multiple slaves usinq simple commands.
- D. Modbus uses explicit source and destination IP addresses and a sinqle known TCP port.
正解：D
質問 # 28
Which policies and procedures publication is titled Patch Manaqement in the IACS Environment?
Available Choices (select all choices that are correct)
- A. ISA-62443-3-3
- B. ISA-TR62443-2-3
- C. ISA-62443-4-2
- D. ISA-TR62443-1-4
正解：B
質問 # 29
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試験問題解答ブレーン問題集でISA-IEC-62443試験問題集PDF問題：https://www.goshiken.com/ISA/ISA-IEC-62443-mondaishu.html
ISA-IEC-62443試験問題集、ISA-IEC-62443練習テスト問題：https://drive.google.com/open?id=1peR3JmHKc_KMdrUT5qel2EHOWOYYrLot