Module 2: Introduction to Google Cloud Observability
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In this post, I provide complete, accurate, and detailed explanations for the answers to Module 2: Introduction to Google Cloud Observability of Course 12: Logging and Monitoring in Google Cloud – Preparing for Google Cloud Certification: Cloud Security Engineer Professional Certificate.
Whether you’re preparing for quizzes or brushing up on your knowledge, these insights will help you master the concepts effectively. Let’s dive into the correct answers and detailed explanations for each question!
Alerting Policies
Graded Assignment
1. In evaluating your alerting policies, which below best describes precision?
- How long alerts take to be acknowledged.
- How long it takes to send notifications in various conditions.
- The proportion of events detected that were relevant to the sum of relevant and irrelevant alerts. ✅
- How long alerts fire after an issue is resolved.
Explanation:
This describes precision, which measures how many of the alerts triggered were actually meaningful or correct. It’s the ratio of true positives to the total number of alerts (true positives + false positives). High precision means fewer false alarms.
2. Explain recall.
- The proportion of alerts detected that were relevant to the sum of relevant alerts and missed alerts. ✅
- The proportion of alerts detected that were relevant to the sum of relevant and irrelevant alerts.
- How long alerts fire after an issue is resolved.
- How long it takes to send notifications in various conditions.
Explanation:
This describes recall, which measures how well your alerting system is catching real issues. It’s the ratio of true positives to all actual relevant events (true positives + false negatives). High recall means fewer missed issues.
3. In the statement “Maintain an error rate of less than 0.3% for the billing system”, what is an SLI?
- Billing system
- Error rate ✅
- 0.3%
- Less than 0.3%
Explanation:
An SLI (Service Level Indicator) is a measurable metric that indicates how a service is performing. In the example “Maintain an error rate of less than 0.3% for the billing system”, the error rate is the actual SLI, because it is the measurable performance indicator being tracked.
Related contents:
Module 2: Introduction to Google Cloud Observability
Module 3: Monitoring Critical Systems
Module 5: Advanced Logging and Analysis
Module 6: Working with Audit Logs
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