Google Cloud Professional Cloud Architect — Question 41

Your company wants to track whether someone is present in a meeting room reserved for a scheduled meeting. There are 1000 meeting rooms across 5 offices on 3 continents. Each room is equipped with a motion sensor that reports its status every second. The data from the motion detector includes only a sensor ID and several different discrete items of information. Analysts will use this data, together with information about account owners and office locations.
Which database type should you use?

Answer options

• A. Flat file
• B. NoSQL
• C. Relational
• D. Blobstore

Correct answer: B

Explanation

The correct answer is B, NoSQL, because it is designed to handle large volumes of unstructured data, such as the discrete information from the motion sensors. A flat file (A) is not efficient for complex queries and relationships, while a relational database (C) may not scale well with the high frequency of data updates. Blobstore (D) is intended for storing large binary objects, which is not suitable for this type of structured data tracking.