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Google Professional Cloud DevOps Engineer Exam - Topic 2 Question 47 Discussion

You support a stateless web-based API that is deployed on a single Compute Engine instance in the europe-west2-a zone . The Service Level Indicator (SLI) for service availability is below the specified Service Level Objective (SLO). A postmortem has revealed that requests to the API regularly time out. The time outs are due to the API having a high number of requests and running out memory. You want to improve service availability. What should you do?
C) Set up additional service instances in other zones and load balance the traffic between all instances.
A) Change the specified SLO to match the measured SLI.
B) Move the service to higher-specification compute instances with more memory.
D) Set up additional service instances in other zones and use them as a failover in case the primary instance is unavailable.

Google Professional Cloud DevOps Engineer Exam - Topic 2 Question 47 Discussion

Actual exam question for Google's Professional Cloud DevOps Engineer exam
Question #: 47
Topic #: 2
[All Professional Cloud DevOps Engineer Questions]

You support a stateless web-based API that is deployed on a single Compute Engine instance in the europe-west2-a zone . The Service Level Indicator (SLI) for service availability is below the specified Service Level Objective (SLO). A postmortem has revealed that requests to the API regularly time out. The time outs are due to the API having a high number of requests and running out memory. You want to improve service availability. What should you do?

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Suggested Answer: C

by Willow at Jun 01, 2022, 07:01 PM

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Teddy
10 months ago
I’m surprised the API is running out of memory on a single instance!
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Joaquin
10 months ago
Wait, can we really fix this just by adding more instances?
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Sherman
10 months ago
Changing the SLO? That's just lowering the bar.
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Dierdre
11 months ago
I think load balancing is the way to go!
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Chau
11 months ago
Moving to higher-spec instances sounds like a solid plan.
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Alesia
11 months ago
D sounds tempting for failover, but I wonder if it would actually improve availability during high traffic. I think we practiced something similar in class, but I can't remember the specifics.
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Gracie
11 months ago
I feel like changing the SLO to match the SLI, like option A suggests, is just a workaround and not a real fix. But I can't recall if that's ever a good practice.
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Eura
11 months ago
I think C might be the way to go since it mentions load balancing, which could really help with high traffic. I just hope I remember the details about setting that up correctly.
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Glenna
11 months ago
I remember we discussed how increasing memory could help with timeouts, so B seems like a good option, but I'm not sure if it's the best long-term solution.
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Lanie
11 months ago
I'm a bit confused by this question. Is the answer really that straightforward, or is there some nuance I'm missing? I'll need to re-read the question and options carefully.
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Chau
11 months ago
Okay, let's see here. The options mention "Queues Activity," "Queues Performance," "My Queues Activity," and just "Queues." I'm thinking the "Queues Performance" view might be the one that shows the current metrics and information for members.
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