Isaiec 62443 Cybersecurity Fundamentals Specialist · Free Practice Question Easy
Question 31
What capability does Modbus TCP/IP operate under?
- A Multicast communication
- B Peer-to-peer communication
- C Broadcast-only mode
- D Client-server capability
Reveal correct answer
Correct answer: D
Explanation
Modbus TCP/IP operates under a client-server capability, where a client (e.g., a SCADA system) sends requests to a server (e.g., a PLC) to read or write data over TCP/IP networks. This model ensures structured communication in industrial environments. It does not rely on multicast or broadcast-only modes, nor is it peer-to-peer, as its architecture is designed for client-initiated requests to server devices.Discussion
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