ISA/IEC 62443 Cybersecurity Fundamentals Specialist — Question 30

Which is an important difference between IT systems and IACS?

Answer options

• 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.

Correct answer: C

Explanation

The correct answer is C because IACS must ensure safety in addition to cybersecurity, which is critical for operational technology. Options A and B misrepresent the primary security focuses of IACS and IT systems respectively. Option D is incorrect as routers can be part of IACS networks for communication purposes.