Exam Professional Machine Learning Engineer All Questions

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Exam Professional Machine Learning Engineer topic 1 question 94 discussion

Actual exam question from Google's Professional Machine Learning Engineer

Question #: 94
Topic #: 1

[All Professional Machine Learning Engineer Questions]

You work on an operations team at an international company that manages a large fleet of on-premises servers located in few data centers around the world. Your team collects monitoring data from the servers, including CPU/memory consumption. When an incident occurs on a server, your team is responsible for fixing it. Incident data has not been properly labeled yet. Your management team wants you to build a predictive maintenance solution that uses monitoring data from the VMs to detect potential failures and then alerts the service desk team. What should you do first?

A. Train a time-series model to predict the machines’ performance values. Configure an alert if a machine’s actual performance values significantly differ from the predicted performance values.
B. Implement a simple heuristic (e.g., based on z-score) to label the machines’ historical performance data. Train a model to predict anomalies based on this labeled dataset.
C. Develop a simple heuristic (e.g., based on z-score) to label the machines’ historical performance data. Test this heuristic in a production environment.
D. Hire a team of qualified analysts to review and label the machines’ historical performance data. Train a model based on this manually labeled dataset.

Show Suggested Answer

Suggested Answer: C 🗳️

by ares81 at Dec. 14, 2022, 2:36 p.m.

Comments

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mil_spyro

Highly Voted 2 years, 6 months ago

Selected Answer: C

I would go for C, it is important to have a clear understanding of what constitutes a potential failure and how to detect it. A heuristic based on z-scores, for example, can be used to flag instances where the performance values of a machine significantly differ from its historical baseline.

upvoted 9 times

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mouthwash

Most Recent 5 months, 2 weeks ago

Selected Answer: B

Since when is developing and testing allowed in prod? Answer is B

upvoted 1 times

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rajshiv

6 months, 2 weeks ago

Selected Answer: B

Option B - because it allows you to efficiently label the data using a heuristic approach (e.g., z-score), and then train an anomaly detection model on that labeled data.

upvoted 1 times

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Pau1234

6 months, 2 weeks ago

Selected Answer: B

c -> no testing in prod. could lead to risks. Hence B.

upvoted 1 times

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AB_C

6 months, 3 weeks ago

Selected Answer: B

Why not C - Heuristic in production without a model: Directly deploying a heuristic in a production environment without testing it within a model can lead to many false positives and alert fatigue for the service desk team.

upvoted 1 times

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pico

1 year, 9 months ago

Selected Answer: B

NOT C: when you have tested something directly in production?? Option B involves labeling historical data using heuristics, which can be a practical and quick way to get started.

upvoted 4 times

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razmik

1 year, 11 months ago

Selected Answer: C

Vote for C Reference: Rule #1: Don’t be afraid to launch a product without machine learning. https://developers.google.com/machine-learning/guides/rules-of-ml#before_machine_learning

upvoted 1 times

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julliet

2 years ago

Selected Answer: C

simple solution goes first, more sophisticated one -- after

upvoted 2 times

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M25

2 years, 1 month ago

Selected Answer: C

Went with C

upvoted 2 times

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TNT87

2 years, 2 months ago

Answer C Same as Question number 139

upvoted 2 times

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studybrew

2 years, 2 months ago

What’s the difference between B and C?

upvoted 3 times

julliet

2 years ago

in B you are labeling with heuristics and still develop a model in C you follow the ML-rules to adopt simple solution first and later decide if, how and where you need more sophisticated model

upvoted 2 times

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tavva_prudhvi

2 years, 2 months ago

Selected Answer: C

This is the best option for this scenario because it's quick and inexpensive, and it can provide a baseline for labeling the historical performance data. Once we have labeled data, we can train a predictive maintenance model to detect potential failures and alert the service desk team.

upvoted 1 times

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osaka_monkey

2 years, 3 months ago

why not D ?

upvoted 1 times

tavva_prudhvi

2 years, 2 months ago

While this approach may result in accurate labeling of the historical performance data, it can be time-consuming and expensive.

upvoted 1 times

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John_Pongthorn

2 years, 4 months ago

Selected Answer: C

https://www.geeksforgeeks.org/z-score-for-outlier-detection-python/

upvoted 1 times

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hiromi

2 years, 5 months ago

Selected Answer: B

I vote for B - https://developers.google.com/machine-learning/guides/rules-of-ml

upvoted 3 times

hiromi

2 years, 5 months ago

Sorry, I think C is the answer

upvoted 4 times

jamesking1103

2 years, 5 months ago

C. we need detect potential failures

upvoted 1 times

guilhermebutzke

2 years, 3 months ago

Why not B? The team wants to create a model to predict failure. So, the z-score is used to label the failure scenario, for then to use this to build a prediction model.

upvoted 2 times

tavva_prudhvi

2 years, 2 months ago

While this approach may work in some cases, it's not guaranteed to work well in this scenario because we don't know the nature of the anomalies that we want to detect. Therefore, it may be difficult to come up with a heuristic that can accurately label the historical performance data.

upvoted 2 times

evanfebrianto

2 years, 1 month ago

But testing the heuristic in a production environment without training a model could be risky and lead to false alarms or misses.

upvoted 1 times

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ares81

2 years, 6 months ago

Selected Answer: A

This is really tricky, but it could be A.

upvoted 2 times

ares81

2 years, 5 months ago

Thinking about it, it should be C.

upvoted 1 times

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