Which of the following is not the component of a SCADA system?

The correct answer is D. Sparger controller.

A SCADA system is a supervisory control and data acquisition system. It is a computer-based system that collects and monitors data from remote locations and then uses that data to control devices at those locations.

The main components of a SCADA system are:

• A database server: This stores the data collected by the SCADA system.
• An I/O system: This is the hardware that is used to connect the SCADA system to the devices that
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