Data logging is the recording of information such as temperature and equipment On/OFF status at regular intervals. Which option best describes this concept?

• A. The process of transmitting data continuously to a remote server.
• B. Real-time control of devices based on setpoints.
• C. Storing data as a continuous video stream.
• D. Recording of information such as temperature and equipment On/OFF status at regular intervals.

Answer: (D)

Data logging is about capturing measurements at set time intervals so you build a historical record you can review later. Recording information like temperature and whether equipment is on or off fits this idea perfectly because it focuses on discrete samples stored over time for analysis, trends, or reporting, rather than actively controlling the process or streaming data continuously.

If data were transmitted continuously to a remote server, that describes ongoing communication rather than local recording for later use. Real-time control based on setpoints is about adjusting actions now to influence the process, not compiling a stored log. Storing information as a continuous video stream describes video data rather than numerical sensor readings. So, recording measurements at regular intervals best matches the concept of data logging.