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Google Professional Cloud DevOps Engineer Exam - Topic 5 Question 27 Discussion

Actual exam question for Google's Professional Cloud DevOps Engineer exam
Question #: 27
Topic #: 5
[All Professional Cloud DevOps Engineer Questions]

Your team has recently deployed an NGINX-based application into Google Kubernetes Engine (GKE) and has exposed it to the public via an HTTP Google Cloud Load Balancer (GCLB) ingress. You want to scale the deployment of the application's frontend using an appropriate Service Level Indicator (SLI). What should you do?

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Suggested Answer: B

by Willow at May 09, 2022, 11:30 AM

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Laquita
4 months ago
B could work, but it might not be efficient for frontend scaling.
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Elliott
4 months ago
A is not ideal; response time isn't a good SLI for scaling.
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Johnna
4 months ago
Wait, can we really use GCLB metrics for autoscaling? Sounds risky.
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Arlette
4 months ago
I disagree, D seems more straightforward with NGINX metrics.
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Raelene
5 months ago
I think option C is the best choice for scaling based on requests.
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Raylene
5 months ago
I vaguely recall something about using custom metrics with Stackdriver for autoscaling. Could that be relevant for this question?
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Johnetta
5 months ago
I think we practiced a similar question where we had to choose between horizontal and vertical scaling. I feel like the horizontal pod autoscaler is the way to go here.
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Irma
5 months ago
I remember we discussed SLIs in class, but I'm not sure if using Liveness and Readiness probes is the right approach for scaling.
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Denny
5 months ago
Exposing the NGINX stats endpoint sounds familiar. I think we learned that it could provide useful metrics for the horizontal pod autoscaler.
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Rory
5 months ago
Okay, let me break this down. The Daily Standup is focused on the team's progress, so the options about individual work and impediments are likely relevant. I'll need to analyze each one to determine which is not a team-level discussion.
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Jannette
5 months ago
Yes, I think you're right, Lisa. The Currency Conversion file is maintained externally, so it would be an EIF, while the Currency Discrepancy file is maintained by the Order Entry system, so it would be an additional RET. Option C seems to best fit the description.
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Thomasena
5 months ago
Okay, let's think this through. The options mention "Standby" paths, so I'm guessing this has to do with MPLS Fast Reroute. I'll need to remember the backup path selection criteria.
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Terrilyn
5 months ago
Hmm, I'm a bit unsure about the AVG function and how it handles NULLs. I'll need to review that behavior.
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Stefany
5 months ago
I'm a little confused by the wording of the question. Does it want us to choose the three best options, or just any three that would work? I'll need to re-read it carefully.
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