ISA/IEC 62443 Cybersecurity Fundamentals Specialist — Question 62
What is OPC?
Answer options
- A. An open standard protocol for real-time field bus communication between automation technology devices
- B. An open standard protocol for the communication of real-time data between devices from different manufacturers
- C. An open standard serial communications protocol widely used in industrial manufacturing environments
- D. A vendor-specific proprietary protocol for the communication of real-time plant data between control devices
Correct answer: B
Explanation
The correct answer, B, accurately describes OPC as a standard protocol that allows for real-time data communication between devices made by different manufacturers. Option A is incorrect because it focuses on field bus communication rather than general device communication. Option C is not correct because it refers to a serial protocol rather than OPC, and D is incorrect since it describes a proprietary protocol instead of the open standard nature of OPC.