PCA Observability Concepts Practice Question
Which TWO statements accurately describe the differences between logs and metrics?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Metrics are best for tracking aggregate trends over time.
Metrics are numerical aggregations (efficient), whereas logs are event-based records (detailed).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Logs are stored as numerical counters.
Why it's wrong here
Logs are usually textual records of events.
- ✗
Metrics are better suited for full-text search.
Why it's wrong here
Logs are better suited for full-text search.
- ✗
Metrics have higher storage costs per data point.
Why it's wrong here
Metrics are significantly more compact and cheaper than logs.
- ✓
Metrics are best for tracking aggregate trends over time.
Why this is correct
Metrics are highly efficient for time-series aggregation.
- ✓
Logs are ideal for debugging specific, individual request failures.
Why this is correct
Logs provide the granular detail needed for debugging specific events.
About these practice questions
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Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CNCF / Linux Foundation exam blueprint
This PCA practice question is part of Courseiva's free CNCF / Linux Foundation certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCA exam.