CompTIA CASP+ (CAS-004) — Question 345

A company has data it would like to aggregate from its PLCs for data visualization and predictive maintenance purposes. Which of the following is the most likely destination for the tag data from the PLCs?

Answer options

• A. External drive
• B. Cloud storage
• C. System aggregator
• D. Local historian

Correct answer: D

Explanation

The correct answer is D, Local historian, as it is specifically designed to store time-series data from PLCs for analysis. External drives, cloud storage, and system aggregators may not be optimized for this type of data aggregation and visualization, making them less suitable choices.