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Google Professional Cloud DevOps Engineer Exam - Topic 1 Question 110 Discussion

Your company runs an ecommerce website built with JVM-based applications and microservice architecture in Google Kubernetes Engine (GKE) The application load increases during the day and decreases during the night Your operations team has configured the application to run enough Pods to handle the evening peak load You want to automate scaling by only running enough Pods and nodes for the load What should you do?
D) Configure the Horizontal Pod Autoscaler and enable the cluster autoscaler
A) Configure the Vertical Pod Autoscaler but keep the node pool size static
B) Configure the Vertical Pod Autoscaler and enable the cluster autoscaler
C) Configure the Horizontal Pod Autoscaler but keep the node pool size static

Google Professional Cloud DevOps Engineer Exam - Topic 1 Question 110 Discussion

Actual exam question for Google's Professional Cloud DevOps Engineer exam
Question #: 110
Topic #: 1
[All Professional Cloud DevOps Engineer Questions]

Your company runs an ecommerce website built with JVM-based applications and microservice architecture in Google Kubernetes Engine (GKE) The application load increases during the day and decreases during the night Your operations team has configured the application to run enough Pods to handle the evening peak load You want to automate scaling by only running enough Pods and nodes for the load What should you do?

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Suggested Answer: D

The best option for automating scaling by only running enough Pods and nodes for the load is to configure the Horizontal Pod Autoscaler and enable the cluster autoscaler. The Horizontal Pod Autoscaler is a feature that automatically adjusts the number of Pods in a deployment or replica set based on observed CPU utilization or custom metrics. The cluster autoscaler is a feature that automatically adjusts the size of a node pool based on the demand for node capacity. By using both features together, you can ensure that your application runs enough Pods to handle the load, and that your cluster runs enough nodes to host the Pods. This way, you can optimize your resource utilization and cost efficiency.


by Artie at Jul 21, 2026, 05:39 PM

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Avery
3 days ago
I’m surprised they didn’t mention using both autoscalers together!
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Dyan
8 days ago
Definitely go with D, it’s the most efficient way to handle load changes.
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Billy
14 days ago
Wait, why would you keep the node pool static? That seems off.
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Stefania
19 days ago
I think B could work too, but not sure about the cluster autoscaler.
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Norah
24 days ago
D is the best option for dynamic scaling!
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Chaya
29 days ago
I’m a bit confused about when to use Horizontal vs. Vertical. I feel like D might be the right answer, but I need to double-check the details.
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Verona
1 month ago
I practiced a similar question where enabling the cluster autoscaler was key to managing node resources effectively.
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Brandon
1 month ago
I think the Vertical Pod Autoscaler is more about adjusting resource requests, so it might not be the best choice for scaling Pods based on load.
upvoted 0 times
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Selma
1 month ago
I remember studying about the Horizontal Pod Autoscaler, but I'm not sure if it works with static node pools.
upvoted 0 times
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