The correct answer involves enabling ALB access logs, storing them in an S3 bucket, and querying them with Athena. This works because ALB access logs capture detailed HTTP request data, including client IPs, URIs, and response codes, which are automatically delivered to a specified S3 bucket in compressed text format. Athena then uses its schema-on-read capability to run SQL queries directly against these logs without needing any ETL or additional agents. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of the AWS logging stack’s division of labor: ALB logs handle HTTP-level traffic, CloudTrail handles API activity, and CloudWatch Agent handles OS-level metrics. A common trap is confusing CloudTrail for HTTP logging or assuming a CloudWatch Agent is needed for ALB logs—neither is correct. For a quick memory anchor, remember the three S’s: S3 for storage, SQL via Athena for querying, and Switch on ALB logging.
DOP-C02 Monitoring and Logging Practice Question
This DOP-C02 practice question tests your understanding of monitoring and logging. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 engineer is designing a monitoring solution for a multi-tier web application hosted on AWS. The application consists of an Application Load Balancer (ALB), EC2 instances, and an RDS database. The engineer needs to capture and analyze HTTP request logs from the ALB to understand client behavior and troubleshoot errors. Which THREE steps are necessary to achieve this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Amazon Athena to query the access logs in S3
Option A is correct because ALB access logs must be enabled. Option C is correct because access logs are stored in S3. Option E is correct because Athena can query the logs in S3. Option B is wrong because CloudWatch Agent is not needed for ALB logs. Option D is wrong because CloudTrail captures API calls, not HTTP requests.
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.
✗
Install the CloudWatch Agent on the ALB
Why it's wrong here
ALB is a managed service; no agent installation is possible.
Read the scenario before looking for a memorised answer.
✓
Create an Amazon S3 bucket to store the access logs
Why this is correct
ALB access logs are delivered to an S3 bucket.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
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 Amazon Athena to query the access logs in S3 — Option A is correct because ALB access logs must be enabled. Option C is correct because access logs are stored in S3. Option E is correct because Athena can query the logs in S3. Option B is wrong because CloudWatch Agent is not needed for ALB logs. Option D is wrong because CloudTrail captures API calls, not HTTP requests.
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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This DOP-C02 practice question is part of Courseiva's free Amazon Web Services 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 DOP-C02 exam.
Question Discussion
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