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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. Which of the following is the BEST reason for periodic audits?
Available Choices (select all choices that are correct)

A) To meet regulations
B) To validate that security policies and procedures are performing
C) To confirm audit procedures
D) To adhere to a published or approved schedule

2. What port number is used by MODBUS TCP/IP for communication?

A) 21
B) 502
C) 80
D) 443

3. Which is an important difference between IT systems and IACS?
Available Choices (select all choices that are correct)

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

4. What change was introduced in the second edition (2024) of ISA-62443-2-1 compared to the first edition (2010)?

A) Removal of supply chain security considerations
B) Elimination of duplication of ISMS requirements
C) Introduction of a new PDCA cycle framework
D) Focus only on individual system components rather than overall system

5. What are three possible entry points (pathways) that could be used for launching a cyber attack?
Available Choices (select all choices that are correct)

A) LAN, portable media, and wireless
B) LAN, portable media, and hard drives
C) LAN, WAN, and hard drive
D) LAN, power source, and wireless OD.

Solutions: