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Google Professional Cloud DevOps Engineer Exam - Topic 3 Question 101 Discussion

[Building and implementing service monitoring strategies]You need to create a Cloud Monitoring SLO for a service that will be published soon. You want to verify that requests to the service will be addressed in fewer than 300 ms at least 90% Of the time per calendar month. You need to identify the metric and evaluation method to use. What should you do?
A) Select a latency metric for a request-based method of evaluation.
B) Select a latency metric for a window-based method of evaluation.
C) Select an availability metric for a request-based method of evaluation.
D) Select an availability metric for a window-based method Of evaluation.

Google Professional Cloud DevOps Engineer Exam - Topic 3 Question 101 Discussion

Actual exam question for Google's Professional Cloud DevOps Engineer exam
Question #: 101
Topic #: 3
[All Professional Cloud DevOps Engineer Questions]

[Building and implementing service monitoring strategies]

You need to create a Cloud Monitoring SLO for a service that will be published soon. You want to verify that requests to the service will be addressed in fewer than 300 ms at least 90% Of the time per calendar month. You need to identify the metric and evaluation method to use. What should you do?

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Suggested Answer: A

by Cordell at Jan 23, 2026, 11:20 PM

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Brianne
26 days ago
Agreed, but what if traffic spikes? That could be an issue!
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Brock
1 month ago
Not sure if 300 ms is realistic for all services.
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Kattie
1 month ago
I think you should use latency as the metric.
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Tasia
1 month ago
90% uptime is pretty standard, but 300 ms is tight.
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Fannie
2 months ago
Sounds like a solid SLO for response time!
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Carri
2 months ago
Haha, this question is a real brain-teaser! I'm going to go with the "Latency" metric and the "Availability" evaluation method.
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Wynell
2 months ago
This is a tricky one, but I'd go with the "Latency" metric and the "Reliability" evaluation method.
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Janessa
2 months ago
Hmm, I'm not sure about this one. Maybe the "Response Time" metric and the "Reliability" evaluation method?
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Quinn
2 months ago
The "Latency" metric and the "Compliance" evaluation method seem like the way to go here.
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William
2 months ago
I think the correct answer is to use the "Latency" metric and the "Availability" evaluation method.
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Dalene
3 months ago
If I recall correctly, we might need to use a combination of histogram and time series data to track the requests effectively.
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Jenelle
3 months ago
I feel like we should focus on the 90% threshold, but I'm confused about how to calculate that over a calendar month.
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Gaston
4 months ago
I remember practicing a similar question where we had to set an SLO for response times. I think we should use a percentage-based evaluation method.
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Lizette
4 months ago
I think the metric we need is latency, but I'm not entirely sure how to set the evaluation method for the SLO.
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Moon
4 months ago
Hmm, I'm not 100% sure how to approach this. I know I need to set up an SLO, but I'm not familiar with the specific process. I think I'll need to do some research on cloud monitoring SLOs and best practices for defining service-level objectives.
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Tandra
4 months ago
This seems straightforward enough. I'd start by looking at the built-in metrics available in the cloud monitoring service and see if there's one that tracks response time. Then I'd configure an SLO to monitor that metric and set the 90% under 300ms target.
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Jennifer
4 months ago
Wait, I'm a little confused. Do I need to create a custom metric, or is there a standard one I can use? And how exactly do I set up the SLO to measure the 90% target per month? I'll need to review the monitoring docs carefully.
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Joye
4 months ago
Okay, I think I get the gist of this. I'd need to figure out how to measure the service's response time and set up the SLO to monitor that. The tricky part might be determining the right evaluation method to use.
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Alesia
5 months ago
Hmm, this seems pretty straightforward. I'd start by identifying the appropriate metric to track the service's response time, like a latency metric. Then I'd set the SLO target to 90% of requests under 300ms per month.
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