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Google Professional Cloud Database Engineer Exam Actual Questions

139 Questions120 Minutes70% Passing Score▣ Updated: Sep 2026

Question 44 of 139

Single answer
You are choosing a database backend for a new application. The application will ingest data points from IoT sensors. You need to ensure that the application can scale up to millions of requests per second with sub-10ms latency and store up to 100 TB of history. What should you do?
AUse Cloud SQL with read replicas for throughput.
BUse Firestore, and rely on automatic serverless scaling.
CUse Memorystore for Memcached, and add nodes as necessary to achieve the required throughput.
DUse Bigtable, and add nodes as necessary to achieve the required throughput.
Correct Answer: D

Use Bigtable, and add nodes as necessary to achieve the required throughput.

Explanation

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