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Google Professional Cloud DevOps Engineer Exam - Topic 1 Question 102 Discussion

[Optimizing service performance]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 102 Discussion

Actual exam question for Google's Professional Cloud DevOps Engineer exam
Question #: 102
Topic #: 1
[All Professional Cloud DevOps Engineer Questions]

[Optimizing service performance]

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

by Juliann at Mar 06, 2026, 10:29 PM

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Paola
25 minutes ago
I prefer B. It keeps things simple.
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Reed
5 days ago
It scales Pods and nodes automatically.
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Teddy
10 days ago
Why D?
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Reed
16 days ago
I think option D is the best.
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Ming
21 days ago
Not sure if autoscaling is reliable enough for peak loads, though...
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Kathryn
26 days ago
I agree with D, it's the best option for handling variable loads!
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Lashunda
2 months ago
Wait, what's the difference between Horizontal and Vertical Autoscalers?
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Roosevelt
3 months ago
I think B could work too, but not as efficient.
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Lindsey
3 months ago
Definitely go with D, it makes the most sense for scaling!
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Cassi
3 months ago
I thought Vertical Pod Autoscaler was the way to go, but I guess not!
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Avery
3 months ago
A is not enough, you need the cluster autoscaler for sure.
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Fatima
3 months ago
Wait, can the cluster autoscaler really handle that much load?
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Goldie
3 months ago
Totally agree, Horizontal Pod Autoscaler is key here!
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Melodie
4 months ago
I think D is the best option for dynamic scaling.
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Carin
4 months ago
I feel like the Vertical Pod Autoscaler is more about resource allocation per pod, so maybe it's not the best fit for this scenario?
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Elfriede
4 months ago
I practiced a similar question where the Horizontal Pod Autoscaler was the right choice, but I’m confused about whether to enable the cluster autoscaler too.
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Joaquin
4 months ago
I think enabling the cluster autoscaler is crucial for managing node resources, but I can't recall if it pairs with the Vertical Pod Autoscaler.
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Elliot
4 months ago
I remember studying about the Horizontal Pod Autoscaler, but I'm not sure if it works with static node pools.
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