SCADA stands for supervisory control and data acquisition. Which of the following statements are true about SCADA? Each correct answer represents a complete solution. Choose all that apply.

A.
SCADA systems also records and logs all events into a file stored on a hard disk.

B.
SCADA systems include only software components.

C.
SCADA is a category of software application program for process control, the gathering of data in real time from remote locations in order to control equipment and conditions.

D.
SCADA is used in power plants as well as in oil and gas refining, telecommunications, transportation, and water and waste control.

Explanation:
SCADA stands for supervisory control and data acquisition. It refers to industrial control systems (ICS): computer systems that monitor and control industrial, infrastructure, or facility-based processes. It is a category of software application program for process control, the gathering of data in real time from remote locations in order to control equipment and conditions. SCADA is used in power plants as well as in oil and gas refining, telecommunications, transportation, and water and waste control.

SCADA systems include hardware and software components. Hardware gathers and feeds data into a computer system that has SCADA software installed. The computer then processes this data and presents it in a timely manner. This system also records and logs all events into a file stored on a hard disk or sends them to a printer. It warns when conditions become hazardous by sounding alarms.