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

  • Exam Code: ISA-IEC-62443
  • Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
  • Updated: Jul 07, 2026
  • Q & A: 221 Questions and Answers

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. What is one challenge associated with firewalls?

A) Difficulty of installation
B) Deciding how they should be configured
C) That they can only filter HTTP traffic
D) Need for constant updates


2. Which of the following is the underlying protocol for Ethernet/IP?
Available Choices (select all choices that are correct)

A) Object Linking and Embedding (OLE) for Process Control
B) Highway Addressable Remote Transducer (HART)
C) Building Automation and Control Network (BACnet)
D) Common Industrial Protocol


3. In terms of availability requirements, how do IACS and IT differ?

A) Continuous operation is expected in IT while scheduled operation is sufficient for IACS.
B) Both IACS and IT have the same availability requirements.
C) Rebooting is never acceptable in IT but tolerated in IACS.
D) IACS tolerates occasional failures while IT does not.


4. Which NIST Special Publication focuses specifically on securing Industrial Control Systems (ICS)?

A) SP 800-53
B) SP 800-82
C) SP 800-171
D) SP 800-30


5. A company is developing an automation solution and wants to align its cybersecurity efforts with ISA/IEC
62443 standards. Which lifecycle phases should be integrated into their project plan to cover both security and automation solution security comprehensively?

A) Design and Implement phases
B) Operate and Maintain phases exclusively
C) All phases
D) Verification and Validation phase only


Solutions:

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

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