NSE 7 – OT Security 7.2 — Question 18

Which statement about the IEC 104 protocol is true?

Answer options

• A. IEC 104 is used for telecontrol SCADA in electrical engineering applications.
• B. IEC 104 is IEC 101 compliant in old SCADA systems.
• C. IEC 104 protects data transmission between OT devices and services.
• D. IEC 104 uses non-TCP/IP standards.

Correct answer: A

Explanation

The correct answer is A because IEC 104 is specifically designed for telecontrol applications in electrical engineering, particularly in SCADA systems. Option B is incorrect as IEC 104 is a newer protocol and does not comply with IEC 101, while C is misleading since while IEC 104 does provide some level of security, its primary purpose is not focused solely on data protection. Option D is false as IEC 104 operates over TCP/IP networks.