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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. What is the purpose of ICS-CERT Alerts?

A) To alert of targeted global energy sector threats
B) To inform about hardware upgrades
C) To advertise cybersecurity services
D) To notify the owners of critical infrastructure

2. Which layer specifies the rules for Modbus Application Protocol
Available Choices (select all choices that are correct)

A) Data link layer
B) Application layer
C) Session layer
D) Presentation layer

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

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

4. Which characteristic is MOST closely associated with the deployment of a demilitarized zone (DMZ)?
Available Choices (select all choices that are correct)

A) Email is prevented, thereby mitigating the risk of phishing attempts.
B) Internet access through the firewall is allowed.
C) Level 4 systems must use the DMZ to communicate with Level 3 and below.
D) Level 0 can only interact with Level 1 through the firewall.

5. Why is OPC Classic considered firewall unfriendly?

A) It is an obsolete communication standard.
B) It dynamically assigns several ports.
C) It allows use of only port 80.
D) It works with control devices from different manufacturers.

Solutions: