Google Cloud Professional Data Engineer — Question 120

You operate a logistics company, and you want to improve event delivery reliability for vehicle-based sensors. You operate small data centers around the world to capture these events, but leased lines that provide connectivity from your event collection infrastructure to your event processing infrastructure are unreliable, with unpredictable latency. You want to address this issue in the most cost-effective way. What should you do?

Answer options

• A. Deploy small Kafka clusters in your data centers to buffer events.
• B. Have the data acquisition devices publish data to Cloud Pub/Sub.
• C. Establish a Cloud Interconnect between all remote data centers and Google.
• D. Write a Cloud Dataflow pipeline that aggregates all data in session windows.

Correct answer: B

Explanation

The correct answer is B because Cloud Pub/Sub provides a reliable messaging service that can handle variable latency and is designed for event-driven architectures, making it ideal for data acquisition devices. Option A, while buffering events, does not address the connectivity reliability issue as effectively as Cloud Pub/Sub. Option C is more complex and costly, and D focuses on data processing rather than solving the immediate delivery reliability issue.