(2025) ISA-IEC-62443 Exam Dumps, Practice Test Questions BUNDLE PACK
ISA Cybersecurity Certification ISA-IEC-62443 Sample Questions Reliable
NEW QUESTION # 44
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. Personnel, policies, and procedures related to the security of computers, networks. PLCs, and other
programmable configurable components of the system - B. Security guidelines for the proper configuration of IACS computers and operating systems
- C. Security guidelines for the proper configuration of IACS PLCs and other programmable configurable
components of the system - D. Computers, networks, operating systems, applications, and other programmable configurable
components of the system
Answer: A
NEW QUESTION # 45
Which is the implementation of PROFIBUS over Ethernet for non-safetv-related communications?
Available Choices (select all choices that are correct)
- A. PROFIBUS DP
- B. PROFIBUS PA
- C. PROFINET
- D. PROF1SAFE
Answer: C
NEW QUESTION # 46
In which layer is the physical address assigned?
Available Choices (select all choices that are correct)
- A. Layer 1
- B. Layer 7
- C. Layer 3
- D. Layer 2
Answer: D
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 # 47
Safety management staff are stakeholders of what security program development?
Available Choices (select all choices that are correct)
- A. SPRP
- B. CSMS
- C. ERM
- D. CSA
Answer: B
NEW QUESTION # 48
Which of the ISA 62443 standards focuses on the process of developing secure products?
Available Choices (select all choices that are correct)
- A. 62443-3-2
- B. 62443-1-1
- C. 62443-4-1
- D. 62443-3-3
Answer: C
Explanation:
The ISA/IEC 62443 series of standards is divided into four main parts, each covering a different aspect of industrial automation and control systems (IACS) cybersecurity1:
* Part 1: Terminology, Concepts, and Models
* Part 2: Policies and Procedures
* Part 3: System Requirements
* Part 4: Component Requirements The part 4 of the series focuses on the requirements for the secure development and maintenance of products that are used in IACS, such as controllers, sensors, actuators, network devices, software applications, and cloud services. The part 4 consists of two standards1:
NEW QUESTION # 49
In an IACS system, a typical security conduit consists of which of the following assets?
Available Choices (select all choices that are correct)
- A. Ferrous, thickwall, and threaded conduit including raceways
- B. Controllers, sensors, transmitters, and final control elements
- C. Wiring, routers, switches, and network management devices
- D. Power lines, cabinet enclosures, and protective grounds
Answer: C
Explanation:
A security conduit is a logical or physical grouping of communication channels connecting two or more zones that share common security requirements1. A zone is a grouping of systems and components based on their functional, logical, and physical relationship that share common security requirements1. Therefore, a security conduit consists of assets that enable or facilitatecommunication between zones, such as wiring, routers, switches, and network management devices. Controllers, sensors, transmitters, and final control elements are examples of assets that belong to a zone, not a conduit. Ferrous, thickwall, and threaded conduit including raceways are physical structures that may enclose or protect wiring, but they are not part of the communication channels themselves. Power lines, cabinet enclosures, and protective grounds are also not part of the communication channels, but rather provide power or protection to the assets in a zone or a conduit. References: 1: Key Concepts of ISA/IEC 62443: Zones & Security Levels | Dragos
NEW QUESTION # 50
What is a commonly used protocol for managing secure data transmission over a Virtual Private Network
(VPN)?
Available Choices (select all choices that are correct)
- A. SSH
- B. MPLS
- C. IPSec
- D. HTTPS
Answer: C
NEW QUESTION # 51
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.
Answer: D
NEW QUESTION # 52
Who must be included in a training and security awareness program?
Available Choices (select all choices that are correct)
- A. Vendors and suppliers
- B. Employees
- C. All personnel
- D. Temporary staff
Answer: C
NEW QUESTION # 53
What is the FIRST step required in implementing ISO 27001?
Available Choices (select all choices that are correct)
- A. Implement strict security controls.
- B. Create a security management organization.
- C. Perform a security risk assessment.
- D. Define an information security policy.
Answer: B
NEW QUESTION # 54
Which organization manages the ISASecure conformance certification program?
Available Choices (select all choices that are correct)
- A. National Institute of Standards and Technology
- B. American Society for Industrial Security
- C. Automation Federation
- D. Security Compliance Institute
Answer: D
Explanation:
The ISASecure conformance certification program is managed by the Security Compliance Institute (ISCI), a non-profit organization established in 2007 by a group of industry stakeholders, including end users, suppliers, and integrators. ISCI's mission is to provide a common industry-accepted set of device and process requirements that drive device security, simplifying procurement for asset owners and device assurance for equipment vendors12. References: 1: ISASecure - IEC 62443 Conformance Certification - Official Site 2:
Certifications - ISASecure
NEW QUESTION # 55
Within the National Institute of Standards and Technoloqv Cybersecuritv Framework v1.0 (NIST CSF), what is the status of the ISA 62443 standards?
Available Choices (select all choices that are correct)
- A. They are not used.
- B. They are used as informative references.
- C. They are used as normative references.
- D. They are under consideration for future use.
Answer: B
Explanation:
The NIST CSF is a voluntary framework that provides a set of standards, guidelines, and best practices to help organizations manage cybersecurity risks. The NIST CSF consists of five core functions: Identify, Protect, Detect, Respond, and Recover. Each function is further divided into categories and subcategories that describe specific outcomes and activities. The NIST CSF also provides informative references that link the subcategories to existing standards, guidelines, and practices that can help organizations achieve the desired outcomes. The informative references are not mandatory or exhaustive, but rather serve as examples of possible sources of guidance. The ISA 62443 standards are used as informative references in the NIST CSF v1.0 for several subcategories, especially in the Protect and Detect functions. The ISA 62443 standards are a series of standards that provide a framework for securing industrial automation and control systems (IACS).
The ISA 62443 standards cover various aspects of IACS security, such as terminology, concepts, requirements, policies, procedures, and technical specifications. The ISA 62443 standards are aligned with the NIST CSF in terms of the core functions and the risk-based approach. Therefore, the ISA 62443 standards can provide useful guidance and best practices for organizations that use IACS and want to implement the NIST CSF. References:
* NIST Cybersecurity Framework - Official Site1
* Framework for Improving Critical Infrastructure Cybersecurity - Version 1.02
* ISA/IEC 62443 Standards - Official Site3
* ISA/IEC 62443 Compliance & Scoring | Centraleyes4
NEW QUESTION # 56
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. New technical controls
- C. Budgeting
- D. Organizational restructuring
Answer: A,B,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 # 57
Which is a role of the application layer?
Available Choices (select all choices that are correct)
- A. Delivers and formats information, possibly with encryption and security
- B. Includes protocols specific to network applications such as email, file transfer, and reading data registers in a PLC
- C. Includes user applications specific to network applications such as email, file transfer, and reading data registers in a PLC
- D. Provides the mechanism for opening, closing, and managing a session between end-user application processes
Answer: A,B
Explanation:
The application layer is the topmost layer of the OSI model, which provides the interface between the user and the network. It includes protocols specific to network applications such as email, file transfer, and reading data registers in a PLC. These protocols deliver and format information, possibly with encryption and security, to ensure reliable and meaningful communication between different applications. The application layer does not include user applications, which are separate from the network protocols. The application layer also does not provide the mechanism for opening, closing, and managing a session between end-user application processes, which is the function of the session layer. References:
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, page 181
* Using the ISA/IEC 62443 Standards to Secure Your Control System, page 82 The application layer in network protocols, such as in the OSI model or the TCP/IP protocol suite, is primarily responsible for providing services directly to user applications. This layer is involved in:
* Option A: Including protocols specific to network applications such as email, file transfer, and industrial protocols like reading data registers in a Programmable Logic Controller (PLC). This is a core function of the application layer as it facilitates specific high-level networking capabilities.
* Option D: Delivering and formatting information, which can include encryption and ensuring the security of data as it is transmitted across the network. This includes protocols like HTTP for web browsing which can encrypt data via HTTPS, SMTP for secure email transmission, and FTP for secure file transfer.
NEW QUESTION # 58
In a defense-in-depth strategy, what is the purpose of role-based access control?
Available Choices (select all choices that are correct)
- A. Ensures that users can access only certain devices on the network
- B. Ensures that users can access only the functions they need for their job
- C. Ensures that users can access systems from remote locations
- D. Ensures that users correctly manage their username and password
Answer: B
Explanation:
Role-based access control (RBAC) is a method of restricting access to resources based on the roles of individual users within an organization. RBAC assigns permissions and responsibilities to roles, rather than to individual users, and then assigns users to those roles. This way, users can only perform the actions that are relevant and necessary for their role, and not access or modify any other resources that are beyond their scope of authority. RBAC is one of the security countermeasures that can be implemented in a defense-in-depth strategy, which is a layered approach to protect industrial automation and control systems (IACS) from cyber threats. RBAC can help prevent unauthorized access, misuse, or sabotage of IACS resources, as well as reduce the risk of human error or insider attacks.
References:
* ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems - Part 3-3: System security requirements and security levels, Clause 5.3.2.11
* ISA/IEC 62443-2-1:2010, Security for industrial automation and control systems - Part 2-1: Establishing an industrial automation and control systems security program, Clause 6.2.2.32
* ISA/IEC 62443-4-1:2018, Security for industrial automation and control systems - Part 4-1: Product security development life-cycle requirements, Clause 5.2.3.23
* ISA/IEC 62443-4-2:2019, Security for industrial automation and control systems - Part 4-2: Technical security requirements for IACS components, Clause 4.2.3.24
NEW QUESTION # 59
What.are the two elements of the risk analysis category of an IACS?
Available Choices (select all choices that are correct)
- A. Risk evaluation and risk identification
- B. Business recovery and risk elimination or mitigation
- C. Business rationale and risk reduction and avoidance
- D. Business rationale and risk identification and classification
Answer: D
Explanation:
The risk analysis category of an IACS consists of two elements: business rationale and risk identification and classification1. Business rationale is the process of defining the scope, objectives, and criteria for the risk analysis, as well as the roles and responsibilities of the stakeholders involved. Risk identification and classification is the process of identifying the assets, threats, vulnerabilities, and consequences of a cyberattack on the IACS, and assigning a risk level to each scenario based on the likelihood and impact of the attack1. These elements are essential for establishing a baseline of the current risk posture of the IACS and determining the appropriate risk treatment measures to reduce the risk to an acceptable level. References: 1:
ISA/IEC 62443-3-2:2020, Security for industrial automation and control systems - Part 3-2: Security risk assessment for system design, International Society of Automation, Research Triangle Park, NC, USA, 2020.
NEW QUESTION # 60
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. The relationships between packets in a session
- C. The packet structure and sequence
- D. Every incoming packet up to the application layer
Answer: A
Explanation:
Packet filter firewalls, as defined by ISA/IEC 62443 standards on cybersecurity, primarily examine the source, destination, and ports in the header of each packet. This type of firewall does not inspect the packet content deeply (such as its structure or sequence) or maintain awareness of the relationships between packets in a session. Instead, it operates at a more superficial level, filtering packets based solely on IP addresses and TCP/UDP ports. This approach allows packet filter firewalls to quickly process and either accept or block packets based on these predefined criteria without delving into the complexities of session management or the content of the packets up to the application layer.
NEW QUESTION # 61
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 as soon as they are available.
- B. Patches should be applied based on the organization's risk assessment.
- C. Patches never should be applied in an IACS environment.
- D. Patches should be applied within one month of availability.
Answer: B
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 # 62
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