This PCD practice question tests your understanding of managing application performance monitoring. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 developer wants to receive notifications when the error rate of their application exceeds 1% over a 5-minute window. What should they create in Cloud Monitoring?
Alerting policy with metric threshold condition
Alerting policies evaluate metrics and send notifications.
Log-based metric
Why wrong: Log-based metrics define metrics but do not alert directly.
Dashboard with error rate chart
Why wrong: Dashboards visualize but do not send notifications.
Uptime check
Why wrong: Uptime checks monitor availability, not error rates.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Alerting policy with metric threshold condition
An alerting policy with a metric threshold condition is the correct approach because Cloud Monitoring evaluates a metric (e.g., error rate) against a threshold (1%) over a specified window (5 minutes) and triggers a notification when the condition is met. This directly fulfills the requirement to be notified when the error rate exceeds the threshold, as alerting policies are designed for proactive notification based on metric data.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Alerting policy with metric threshold condition
Why this is correct
Alerting policies evaluate metrics and send notifications.
Related concept
Read the scenario before looking for a memorised answer.
Log-based metric
Why it's wrong here
Log-based metrics define metrics but do not alert directly.
Dashboard with error rate chart
Why it's wrong here
Dashboards visualize but do not send notifications.
Uptime check
Why it's wrong here
Uptime checks monitor availability, not error rates.
Common exam traps
Cisco often tests the distinction between alerting policies (which trigger notifications) and other monitoring components like dashboards or log-based metrics, so candidates mistakenly choose a log-based metric or dashboard because they confuse data collection with alerting.
Detailed technical explanation
Under the hood, Cloud Monitoring alerting policies use a metric threshold condition that evaluates a time series against a static or dynamic threshold using a rolling window (e.g., 5 minutes) with a specified alignment period and combiner (e.g., mean, count). A subtle behavior is that the threshold condition can be configured with a 'for' duration (e.g., 5 minutes) to ensure the condition persists before firing, preventing flapping from transient spikes. In a real-world scenario, a developer might set a threshold of 1% error rate over 5 minutes using the 'metric.type' for error count divided by total requests, with a 'conditionThreshold' that triggers a notification via email, SMS, or PagerDuty.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Managing application performance monitoring — This question tests Managing application performance monitoring — Read the scenario before looking for a memorised answer..
The correct answer is: Alerting policy with metric threshold condition — An alerting policy with a metric threshold condition is the correct approach because Cloud Monitoring evaluates a metric (e.g., error rate) against a threshold (1%) over a specified window (5 minutes) and triggers a notification when the condition is met. This directly fulfills the requirement to be notified when the error rate exceeds the threshold, as alerting policies are designed for proactive notification based on metric data.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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