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[General] ISA-IEC-62443 Dump Ready - Exam Questions and Answers

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【General】 ISA-IEC-62443 Dump Ready - Exam Questions and Answers

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q51-Q56):NEW QUESTION # 51
Which is the implementation of PROFIBUS over Ethernet for non-safety-related communications?
Available Choices (select all choices that are correct)
  • A. PROF1SAFE
  • B. PROFIBUS DP
  • C. PROFINET
  • D. PROFIBUS PA
Answer: C
Explanation:
PROFINET is the implementation of PROFIBUS over Ethernet for non-safety-related communications. It is a standard for industrial Ethernet that enables real-time data exchange between automation devices, controllers, and higher-level systems. PROFINET uses standard Ethernet hardware and software, but adds a thin software layer that allows deterministic and fast communication. PROFINET supports different communication profiles for different applications, such as motion control, process automation, and functional safety. PROFINET is compatible with PROFIBUS, and allows seamless integration of existing PROFIBUS devices and networks123 References: 1: What is PROFINET? - PI North America 2: PROFINET - Wikipedia 3: PROFINET Technology and Application - System Description

NEW QUESTION # 52
What does Layer 1 of the ISO/OSI protocol stack provide?
Available Choices (select all choices that are correct)
  • A. Framing, converting electrical signals to data, and error checking
  • B. User applications specific to network applications such as reading data registers in a PLC
  • C. The electrical and physical specifications of the data connection
  • D. Data encryption, routing, and end-to-end connectivity
Answer: C

NEW QUESTION # 53
Which U.S. Department is responsible for the Chemical Facility Anti-Terrorism Standards (CFATS)?
  • A. Department of Energy
  • B. Nuclear Regulatory Commission
  • C. Transportation Security Administration
  • D. Department of Homeland Security
Answer: D
Explanation:
The Chemical Facility Anti-Terrorism Standards (CFATS) program is overseen and enforced by the U.S.
Department of Homeland Security (DHS). This program is designed to identify and regulate high-risk chemical facilities to ensure they have security measures in place to reduce the risk associated with hazardous chemicals, including risks posed by cyber threats.
Reference: U.S. Department of Homeland Security (DHS), Official CFATS Documentation; ISA/IEC 62443-
2-1:2009, Section 4.2.6 (Reference to U.S. regulations).

NEW QUESTION # 54
An industrial facility wants to ensure that only authorized systems reach its PLCs while minimizing disruption to time-sensitive control processes. Which type of firewall would BEST suit this need?
  • A. IACS-specific firewall with deep packet inspection
  • B. Basic packet filter firewall without protocol awareness
  • C. General-purpose software firewall
  • D. Unidirectional gateway (data diode)
Answer: A
Explanation:
For industrial networks, the most effective approach is to use IACS-specific firewalls that perform deep packet inspection (DPI) of industrial protocols (e.g., Modbus, DNP3, OPC UA).
"Industrial-specific firewalls with DPI capabilities can inspect control system protocols and enforce granular access control without disrupting time-sensitive operations."
- ISA/IEC 62443-3-3:2013, SR 5.1 - Zone Boundary Protection
Unlike generic IT firewalls, IACS-specific firewalls:
Understand OT protocols
Enforce real-time constraints
Support deterministic traffic flows
References:
ISA/IEC 62443-3-3:2013 - SR 5.1
ISA/IEC 62443-1-1 - Zone and conduit protection technologies

NEW QUESTION # 55
Whose responsibility is it to determine the level of risk an organization is willing to tolerate?
Available Choices (select all choices that are correct)
  • A. Management
  • B. Operations Department
  • C. Safety Department
  • D. Legal Department
Answer: A

NEW QUESTION # 56
......
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