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[General] Exam ISA-IEC-62443 Bible - Pass Guaranteed 2026 ISA ISA-IEC-62443 First-grade Pa

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【General】 Exam ISA-IEC-62443 Bible - Pass Guaranteed 2026 ISA ISA-IEC-62443 First-grade Pa

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q99-Q104):NEW QUESTION # 99
What is the primary purpose of Foundational Requirement 1 (FR 1)?
  • A. Control use of selected devices.
  • B. Ensure data confidentiality.
  • C. Control access to selected devices.
  • D. Respond to security violations.
Answer: C
Explanation:
Foundational Requirement 1 (FR 1) in the ISA/IEC 62443 series is titled "Identification and Authentication Control (IAC)". Its purpose is to control access to selected devices by ensuring that only authenticated and authorized users or systems can interact with critical IACS components.
"FR 1 - Identification and Authentication Control (IAC): This foundational requirement ensures that all users and components interacting with the system are uniquely identified and authenticated before access is granted."
- ISA/IEC 62443-3-3:2013, Clause 4.2.1 - FR 1
This foundational layer supports higher-level security goals like use control, confidentiality, and system integrity.
References:
ISA/IEC 62443-3-3:2013 - Clause 4.2.1
ISA/IEC 62443-1-1 - Overview of the 7 Foundational Requirements

NEW QUESTION # 100
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 uses explicit source and destination IP addresses and a sinqle known TCP port.
  • B. Modbus uses a single master to communicate with multiple slaves usinq simple commands.
  • C. Modbus is a proprietary protocol that is widely supported by vendors.
  • D. Modbus has no known security vulnerabilities, so firewall rules are simple to implement.
Answer: A
Explanation:
According to the ISA/IEC 62443-2-4 standard, a training and security awareness program should include all personnel who have access to the industrial automation and control system (IACS) or who are involved in its operation, maintenance, or management. This includes vendors and suppliers, employees, temporary staff, contractors, and visitors. The purpose of the program is to ensure that all personnel are aware of the security risks and policies related to the IACS, and that they have the necessary skills and knowledge to perform their roles in a secure manner. The program should also cover the roles and responsibilities of different personnel, the reporting procedures for security incidents, and the best practices for security hygiene. References:
ISA/IEC 62443-2-4:2015 - Security for industrial automation and control systems - Part 2-4: Security program requirements for IACS service providers1 ISA/IEC 62443 Cybersecurity Fundamentals Specialist Training Course2

NEW QUESTION # 101
What does Layer 1 of the ISO/OSI protocol stack provide?
Available Choices (select all choices that are correct)
  • A. The electrical and physical specifications of the data connection
  • B. User applications specific to network applications such as reading data registers in a PLC
  • C. Framing, converting electrical signals to data, and error checking
  • D. Data encryption, routing, and end-to-end connectivity
Answer: A
Explanation:
Layer 1 of the ISO/OSI protocol stack is the physical layer, which provides the means of transmitting and receiving raw data bits over a physical medium. It defines the electrical and physical specifications of the data connection, such as the voltage levels, signal timing, cable types, connectors, and pin assignments. It does not perform any data encryption, routing, end-to-end connectivity, framing, error checking, or user applications. These functions are performed by higher layers of the protocol stack, such as the data link layer, the network layer, the transport layer, and the application layer. References: ISO/IEC 7498-1:1994, Section
6.11; ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 3.1.12

NEW QUESTION # 102
In an IACS system, a typical security conduit consists of which of the following assets?
Available Choices (select all choices that are correct)
  • A. Controllers, sensors, transmitters, and final control elements
  • B. Ferrous, thickwall, and threaded conduit including raceways
  • C. Wiring, routers, switches, and network management devices
  • D. Power lines, cabinet enclosures, and protective grounds
Answer: C

NEW QUESTION # 103
Which is a common pitfall when initiating a CSMS program?
Available Choices (select all choices that are correct)
  • A. Failure to relate to the mission of the organization
  • B. Immediate jump into detailed risk assessment
  • C. Organizational lack of communication
  • D. Insufficient documentation due to lack of good follow-up
Answer: A

NEW QUESTION # 104
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