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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. A plant has several zones including business, safety-critical, and wireless zones. According to ISA/IEC
62443, how should these zones be managed during risk assessment?

A) Combine all zones into one for simplicity.
B) Treat temporarily connected devices as part of the safety zone permanently.
C) Ignore physical location when grouping assets.
D) Establish clear separation between zones based on criticality.

2. 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) Basic packet filter firewall without protocol awareness
B) Unidirectional gateway (data diode)
C) IACS-specific firewall with deep packet inspection
D) General-purpose software firewall

3. Which of the following is a recommended default rule for IACS firewalls?
Available Choices (select all choices that are correct)

A) Allow all traffic by default.
B) Block all traffic by default.
C) Allow IACS devices to access the Internet.
D) Allow traffic directly from the IACS network to the enterprise network.

4. Which is an important difference between IT systems and IACS?

A) The IACS security priority is integrity.
B) The IT security priority is availability.
C) IACS cybersecurity must address safety issues.
D) Routers are not used in IACS networks.

5. Which term refers to legally enforceable rules created by government bodies or authorized organizations?

A) Standards
B) Frameworks
C) Special Publications
D) Regulations

Solutions: