Exam Professional Cloud DevOps Engineer All Questions

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Exam Professional Cloud DevOps Engineer topic 1 question 74 discussion

Actual exam question from Google's Professional Cloud DevOps Engineer

Question #: 74
Topic #: 1

[All Professional Cloud DevOps Engineer Questions]

You are responsible for the reliability of a high-volume enterprise application. A large number of users report that an important subset of the application's functionality `" a data intensive reporting feature `" is consistently failing with an HTTP 500 error. When you investigate your application's dashboards, you notice a strong correlation between the failures and a metric that represents the size of an internal queue used for generating reports. You trace the failures to a reporting backend that is experiencing high I/O wait times. You quickly fix the issue by resizing the backend's persistent disk (PD). How you need to create an availability
Service Level Indicator (SLI) for the report generation feature. How would you define it?

A. As the I/O wait times aggregated across all report generation backends
B. As the proportion of report generation requests that result in a successful response
C. As the application's report generation queue size compared to a known-good threshold
D. As the reporting backend PD throughout capacity compared to a known-good threshold

Show Suggested Answer

Suggested Answer: B 🗳️

by Nik22 at Oct. 29, 2021, 5:03 p.m.

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NXD

Highly Voted 3 years, 3 months ago

The question is: "create an availability SLI for the report generation feature." => availability. B is correct. Others aren't availability SLI.

upvoted 20 times

MF2C

3 years, 3 months ago

B is more like SLO rather than SLI.

upvoted 3 times

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Shasha1

Highly Voted 3 years, 3 months ago

B is correct, availability = good time/ total time.

upvoted 7 times

Manh

3 years, 3 months ago

AGREE WITH B

upvoted 3 times

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Meyucho

Most Recent 1 year, 2 months ago

C and D are SLOs (they use a threshold). B seems to be more like an indicator and didn't rely exclusivelly on PD's I/O. Any issue that disturb the correct reports finalization could be detected with this SLI

upvoted 1 times

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jomonkp

1 year, 2 months ago

Selected Answer: B

option B

upvoted 2 times

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jacknguyen

1 year, 5 months ago

B is correct.

upvoted 1 times

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JonathanSJ

2 years, 1 month ago

Selected Answer: B

B. As the proportion of report generation requests that result in a successful response is a valid availability Service Level Indicator (SLI) for the report generation feature. This indicator measures the percentage of requests for report generation that are successfully completed, and it is an indicator of the service availability. This SLI provides a clear and measurable way to track the availability of the report generation feature. It is a simple and easy to understand metric, that it can be easily monitored and reported. It can be used to track the performance of the report generation feature over time and detect any potential issues that may cause it to become unavailable. It also allows you to detect and diagnose issues in the system quickly and take appropriate action to mitigate them. Additionally, it aligns well with the customer's expectation of the report generation feature as they want to see a high percentage of successful report generation requests, which indicates that the feature is working correctly.

upvoted 2 times

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leandrojpg

2 years, 1 month ago

https://cloud.google.com/stackdriver/docs/solutions/slo-monitoring/sli-metrics/overview?hl=pt-br

upvoted 2 times

leandrojpg

2 years, 1 month ago

ANS BBB see link

upvoted 1 times

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zellck

2 years, 3 months ago

Selected Answer: B

B is the answer.

upvoted 1 times

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paul223344

2 years, 10 months ago

Answer : B. the proportion of report generation requests that result in a successful response Question: create an AVAILABILITY SLI for the report generation feature According to SRE Workbook, one of potential SLI is as below: * Type of service: Request-driven * Type of SLI: Availability * Description: The proportion of requests that resulted in a successful response. https://sre.google/workbook/implementing-slos/

upvoted 4 times

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maddy94

2 years, 10 months ago

Selected Answer: B

B is correct

upvoted 2 times

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cyrus86

3 years ago

Selected Answer: C

Service Level Indicator, is a key metric used to determine whether or not the SLO is being met. To prevent overcomplicating things, it’s important to keep things simple and choose the right key metrics to monitor. Here Queue size is the key metric.

upvoted 2 times

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