PCDOE Implementing service monitoring strategies Practice Question
This PCDOE practice question tests your understanding of implementing service monitoring strategies. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A DevOps team is setting up SLOs for a service with two critical metrics: availability and latency. They want to measure over a 30-day window. Which approach correctly defines an SLO?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Cloud Monitoring to create a custom SLI based on request latency metrics and set an SLO with a 30-day rolling window
Option C is correct because it uses Cloud Monitoring to create a custom SLI based on request latency metrics, which is a valid SLI type, and sets an SLO with a 30-day rolling window, matching the requirement. Cloud Monitoring's SLO feature natively supports rolling windows, and latency is a standard metric for defining service-level objectives.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use Cloud Monitoring to create a custom SLI based on logs and set an SLO with a 7-day rolling window
Why it's wrong here
The window should be 30 days, not 7.
✗
Use Cloud Tasks to schedule a cron job that calculates availability
Why it's wrong here
Cloud Tasks is for task execution, not SLO definition.
✓
Use Cloud Monitoring to create a custom SLI based on request latency metrics and set an SLO with a 30-day rolling window
Why this is correct
This correctly uses Cloud Monitoring and a 30-day rolling window.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Stackdriver Monitoring (deprecated) to set an SLO with a fixed 30-day window
Why it's wrong here
Stackdriver is deprecated; use Cloud Monitoring with rolling window.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between deprecated services (Stackdriver) and current ones (Cloud Monitoring), and the requirement for a rolling window versus a fixed window, leading candidates to pick D if they are unaware of deprecation or misunderstand window types.
Detailed technical explanation
How to think about this question
Cloud Monitoring SLOs use rolling windows to continuously evaluate compliance over the trailing period, which is more representative of recent performance than a fixed calendar window. The SLI for latency typically measures the proportion of requests below a threshold (e.g., p99 < 200ms), and the SLO defines the target (e.g., 99.9% of requests in the rolling window meet the threshold). This approach aligns with Google's SRE practices and the definition of SLOs in the Site Reliability Engineering book.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Implementing service monitoring strategies — This question tests Implementing service monitoring strategies — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Cloud Monitoring to create a custom SLI based on request latency metrics and set an SLO with a 30-day rolling window — Option C is correct because it uses Cloud Monitoring to create a custom SLI based on request latency metrics, which is a valid SLI type, and sets an SLO with a 30-day rolling window, matching the requirement. Cloud Monitoring's SLO feature natively supports rolling windows, and latency is a standard metric for defining service-level objectives.
What should I do if I get this PCDOE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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