ISA/IEC 62443 Cybersecurity Fundamentals Specialist : ISA-IEC-62443 Exam

  • Exam Code: ISA-IEC-62443
  • Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
  • Updated: Jul 02, 2026
  • Q & A: 221 Questions and Answers

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. What is a key activity in the Maintain phase?

A) Designing cybersecurity countermeasures
B) Allocating assets to security zones
C) Risk assessment
D) Managing changes


2. Which of the following technologies is no longer considered secure?

A) Advanced Encryption Standard (AES)
B) Transport Layer Security (TLS)
C) Digital Encryption Standard (DES)
D) Secure Sockets Layer (SSL)


3. An industrial facility wants to ensure that only authorized communication reaches 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) Unidirectional gateway (data diode)
C) General-purpose software firewall
D) Basic packet filter firewall without protocol awareness


4. Why is patch management more difficult for IACS than for business systems?
Available Choices (select all choices that are correct)

A) Overtime pay is required for technicians.
B) Patching a live automation system can create safety risks.
C) Many more approvals are required.
D) Business systems automatically update.


5. After receiving an approved patch from the IACS vendor, what is BEST practice for the asset owner to follow?

A) If a medium priority, schedule the installation within three months after receipt.
B) If a low priority, there is no need to apply the patch.
C) If a high priority, apply the patch at the first unscheduled outage.
D) If no problems are experienced with the current IACS, it is not necessary to apply the patch.


Solutions:

Question # 1
Answer: D
Question # 2
Answer: D
Question # 3
Answer: A
Question # 4
Answer: B
Question # 5
Answer: C

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