Google Cloud Professional Data Engineer PDE — Topic 1 Question 266

Question

You are building a streaming Dataflow pipeline that ingests noise level data from hundreds of sensors placed near construction sites across a city. The sensors measure noise level every ten seconds, and send that data to the pipeline when levels reach above 70 dBA. You need to detect the average noise level from a sensor when data is received for a duration of more than 30 minutes, but the window ends when no data has been received for 15 minutes. What should you do?

Accepted Answer

Correct answer: A. The correct answer is A. Option A: Use session windows with a 15-minute gap duration. This option meets the real-time / low-latency performance requirement.

Google Cloud Professional Data Engineer PDE — Question 266