PCDOE Implementing service monitoring strategies Practice Question
This PCDOE practice question tests your understanding of implementing service monitoring strategies. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Your company runs a multi-region application on Google Kubernetes Engine. You have implemented Cloud Monitoring dashboards to track cluster resource utilization and application SLIs. After a recent upgrade, you notice that the dashboard shows a sudden drop in CPU utilization for all nodes in one zone, but the application is still serving traffic normally. You suspect a monitoring issue. What should you investigate first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Check if the Kubernetes Metrics Server is running correctly in that zone.
The Kubernetes Metrics Server is responsible for collecting resource metrics from Kubelets and exposing them via the Metrics API, which Cloud Monitoring uses to display CPU utilization. A sudden drop in CPU utilization across all nodes in a single zone, while the application continues to serve traffic normally, strongly indicates that the Metrics Server in that zone has failed or is not reporting metrics, rather than an actual change in workload. Investigating the Metrics Server's health and logs is the correct first step to confirm whether the monitoring pipeline is broken.
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.
✗
Check if the nodes in that zone have been cordoned.
Why it's wrong here
Cordoning would prevent pod scheduling, but app is still serving, so unlikely.
✗
Check if the application's resource requests and limits have changed.
Why it's wrong here
Resource requests affect scheduling, not metric collection.
✓
Check if the Kubernetes Metrics Server is running correctly in that zone.
Why this is correct
Metrics Server is responsible for collecting resource usage; if it's down, CPU data would drop.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Check if the Cloud Monitoring agent has been updated incorrectly.
Why it's wrong here
GKE uses Metrics Server, not an agent, for resource metrics.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that Cloud Monitoring relies on an external agent for all metrics, when in fact GKE integrates natively with the Metrics Server for node and pod resource utilization, making agent-related options a red herring.
Detailed technical explanation
How to think about this question
The Metrics Server uses the Kubelet's Summary API (port 10250) to scrape resource usage every 60 seconds by default, then aggregates and serves these metrics via the metrics.k8s.io API. If the Metrics Server pod is unhealthy, misconfigured, or has network issues in a specific zone, the Cloud Monitoring dashboard will show a drop or absence of CPU utilization data for that zone's nodes, even though the application continues to run normally. A common subtle behavior is that the Metrics Server may fail silently if its TLS certificate or RBAC permissions are misconfigured after a cluster upgrade, leading to a gap in monitoring data without any obvious application impact.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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: Check if the Kubernetes Metrics Server is running correctly in that zone. — The Kubernetes Metrics Server is responsible for collecting resource metrics from Kubelets and exposing them via the Metrics API, which Cloud Monitoring uses to display CPU utilization. A sudden drop in CPU utilization across all nodes in a single zone, while the application continues to serve traffic normally, strongly indicates that the Metrics Server in that zone has failed or is not reporting metrics, rather than an actual change in workload. Investigating the Metrics Server's health and logs is the correct first step to confirm whether the monitoring pipeline is broken.
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.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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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