- A
Use Fluent Bit daemonset to send application logs to CloudWatch Logs.
Fluent Bit is a common log collector for EKS that can send logs to CloudWatch Logs for retention.
- B
Stream logs to Amazon Kinesis Data Firehose for transformation before landing in CloudWatch Logs.
Why wrong: This adds complexity and cost; direct streaming to CloudWatch Logs is sufficient.
- C
Enable CloudWatch Container Insights for the EKS cluster.
Why wrong: Container Insights provides cluster-level metrics, not custom application metrics.
- D
Configure a CloudWatch metric filter or an alarm to alert on high error rates.
Alerts on custom metrics help the team respond to issues quickly.
- E
Deploy the CloudWatch agent with Prometheus metric collection configuration.
The agent can scrape Prometheus endpoints and send metrics to CloudWatch with low latency.
Quick Answer
The answer is to deploy Fluent Bit as a DaemonSet on Amazon EKS for log collection, use the CloudWatch agent with Prometheus metric collection configuration for custom metrics, and set a 90-day retention policy on the CloudWatch Logs group. Fluent Bit is the correct choice for logs because it is a lightweight, high-performance log processor that sends data directly to CloudWatch Logs with minimal latency, while the CloudWatch agent with Prometheus scraping handles custom metrics at high resolution by pulling from application endpoints. On the DOP-C02 exam, this scenario tests your ability to separate log ingestion from metric collection—a common trap is assuming Fluent Bit alone can scrape Prometheus metrics, but it only handles logs, not custom metric endpoints. Remember the pairing: Fluent Bit for logs, CloudWatch agent for Prometheus metrics. A helpful mnemonic is "Logs with Fluent, Metrics with Agent"—if you see custom metrics, think CloudWatch agent, not Fluent Bit.
DOP-C02 Monitoring and Logging Practice Question
This DOP-C02 practice question tests your understanding of monitoring and logging. 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 DevOps team is designing a monitoring strategy for a microservices application deployed on Amazon EKS. The application emits custom metrics, and the team needs to collect them with minimal latency and at high resolution. The team also needs to retain logs for 90 days for compliance. Which THREE steps should the team take to meet these requirements? (Choose three.)
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
Use Fluent Bit daemonset to send application logs to CloudWatch Logs.
Option A is correct because Fluent Bit is a lightweight, high-performance log processor that can be deployed as a DaemonSet on Amazon EKS to collect application logs with minimal latency. It sends logs directly to CloudWatch Logs, which supports a retention policy of up to 10 years, easily meeting the 90-day compliance requirement. Fluent Bit's low resource footprint and efficient data pipeline ensure high-resolution log collection without impacting application performance.
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 Fluent Bit daemonset to send application logs to CloudWatch Logs.
Why this is correct
Fluent Bit is a common log collector for EKS that can send logs to CloudWatch Logs for retention.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Stream logs to Amazon Kinesis Data Firehose for transformation before landing in CloudWatch Logs.
Why it's wrong here
This adds complexity and cost; direct streaming to CloudWatch Logs is sufficient.
- ✗
Enable CloudWatch Container Insights for the EKS cluster.
Why it's wrong here
Container Insights provides cluster-level metrics, not custom application metrics.
- ✓
Configure a CloudWatch metric filter or an alarm to alert on high error rates.
Why this is correct
Alerts on custom metrics help the team respond to issues quickly.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Deploy the CloudWatch agent with Prometheus metric collection configuration.
Why this is correct
The agent can scrape Prometheus endpoints and send metrics to CloudWatch with low latency.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse CloudWatch Container Insights (which provides infrastructure-level metrics) with a solution for custom application metrics and logs, leading them to select Option C instead of the correct combination of Fluent Bit, metric filters/alarms, and the CloudWatch agent with Prometheus configuration.
Detailed technical explanation
How to think about this question
Fluent Bit uses a plugin-based architecture with built-in output plugins for CloudWatch Logs, allowing it to batch and compress log events before sending them via the PutLogEvents API, which reduces network overhead and latency. The CloudWatch agent with Prometheus metric collection configuration leverages the OpenMetrics standard to scrape custom metrics from application endpoints, storing them as CloudWatch metrics with up to 1-second resolution. This approach is ideal for microservices on EKS because it avoids the overhead of a full Prometheus server while still providing high-cardinality metric support.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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.
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Monitoring and Logging — study guide chapter
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Monitoring and Logging — This question tests Monitoring and Logging — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Fluent Bit daemonset to send application logs to CloudWatch Logs. — Option A is correct because Fluent Bit is a lightweight, high-performance log processor that can be deployed as a DaemonSet on Amazon EKS to collect application logs with minimal latency. It sends logs directly to CloudWatch Logs, which supports a retention policy of up to 10 years, easily meeting the 90-day compliance requirement. Fluent Bit's low resource footprint and efficient data pipeline ensure high-resolution log collection without impacting application performance.
What should I do if I get this DOP-C02 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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Last reviewed: Jun 11, 2026
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