- A
Amazon Athena and Amazon QuickSight
Why wrong: Athena queries data in S3, not real-time log streams; QuickSight is for business intelligence, not real-time dashboards.
- B
Amazon Kinesis Data Analytics and Amazon Elasticsearch Service
Why wrong: This adds unnecessary complexity for a simple count query; Logs Insights is more direct.
- C
Amazon S3 and Amazon QuickSight
Why wrong: Logs would need to be exported to S3, which is not real-time; QuickSight is not designed for real-time log monitoring.
- D
CloudWatch Logs Insights and CloudWatch Dashboards
Logs Insights can query live log data and display results on CloudWatch Dashboards in real-time.
Question 1,334 of 1,750
CloudWatch Logs Insights Real-Time Error Dashboard
This DOP-C02 practice question tests your understanding of incident and event response. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 company uses Amazon CloudWatch Logs to store application logs from multiple EC2 instances. The DevOps team needs to create a real-time dashboard that displays the count of ERROR-level log entries across all instances. Which combination of services should be used?
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
✓
CloudWatch Logs Insights and CloudWatch Dashboards
Option D is correct because CloudWatch Logs Insights allows real-time querying of CloudWatch Logs, and CloudWatch Dashboards can display the results as a real-time dashboard showing the count of ERROR-level log entries across all instances. Option A is incorrect because Amazon Athena is designed for querying data stored in S3, not real-time log streams. Option B is incorrect because while Kinesis Data Analytics and Elasticsearch Service could be used, they add unnecessary complexity and cost compared to the native CloudWatch integration. Option C is incorrect because Amazon S3 and QuickSight are not suitable for real-time monitoring; QuickSight is for business intelligence and batch analytics.
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.
- ✗
Amazon Athena and Amazon QuickSight
Why it's wrong here
Athena queries data in S3, not real-time log streams; QuickSight is for business intelligence, not real-time dashboards.
- ✗
Amazon Kinesis Data Analytics and Amazon Elasticsearch Service
Why it's wrong here
This adds unnecessary complexity for a simple count query; Logs Insights is more direct.
- ✗
Amazon S3 and Amazon QuickSight
Why it's wrong here
Logs would need to be exported to S3, which is not real-time; QuickSight is not designed for real-time log monitoring.
- ✓
CloudWatch Logs Insights and CloudWatch Dashboards
Why this is correct
Logs Insights can query live log data and display results on CloudWatch Dashboards in real-time.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Incident and Event Response — study guide chapter
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Incident and Event Response practice questions
Targeted practice on this topic area only
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Incident and Event Response — This question tests Incident and Event Response — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: CloudWatch Logs Insights and CloudWatch Dashboards — Option D is correct because CloudWatch Logs Insights allows real-time querying of CloudWatch Logs, and CloudWatch Dashboards can display the results as a real-time dashboard showing the count of ERROR-level log entries across all instances. Option A is incorrect because Amazon Athena is designed for querying data stored in S3, not real-time log streams. Option B is incorrect because while Kinesis Data Analytics and Elasticsearch Service could be used, they add unnecessary complexity and cost compared to the native CloudWatch integration. Option C is incorrect because Amazon S3 and QuickSight are not suitable for real-time monitoring; QuickSight is for business intelligence and batch analytics.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
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