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Answer: Compute Engine Autoscaler
The correct answer is **Compute Engine Autoscaler**. This GCP service is specifically designed to automatically adjust the number of virtual machine instances based on criteria you define, such as CPU utilization or load balancing capacity. Unlike **Cloud SQL**, a managed relational database service, or **Cloud Pub/Sub**, a messaging and streaming data service, Compute Engine Autoscaler directly supports the scaling of VM instances. **Cloud Spanner**, while offering horizontal scalability for relational databases, does not provide VM instance auto-scaling. Therefore, Compute Engine Autoscaler is the appropriate choice for dynamically scaling VM instances in GCP.
Author: LeetQuiz Editorial Team
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Which Google Cloud Platform (GCP) service enables the automatic scaling of virtual machine instances according to predefined criteria?
A
Cloud SQL
B
Compute Engine Autoscaler
C
Cloud Pub/Sub
D
Cloud Spanner