- A
Increase the size of the instance store volumes.
Why wrong: Instance store is ephemeral; logs still lost on termination.
- B
Use an Amazon EFS file system and mount it to each instance for log storage.
Why wrong: EFS provides persistent storage, but logs are still at risk if application stops writing.
- C
Configure the Auto Scaling group to terminate instances after logs are copied to S3.
Why wrong: No automatic mechanism; logs may be lost during scale-in.
- D
Install the CloudWatch Logs agent on each instance and stream logs to CloudWatch Logs.
Real-time streaming to CloudWatch prevents loss.
Question 387 of 1,750
DOP-C02 Resilient Cloud Solutions Practice Question
This DOP-C02 practice question tests your understanding of resilient cloud solutions. 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's application runs on Amazon EC2 instances in an Auto Scaling group. The application writes logs to local instance storage. The operations team needs to ensure logs are not lost during instance termination or scaling events. What should be done?
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
✓
Install the CloudWatch Logs agent on each instance and stream logs to CloudWatch Logs.
Option D is correct because the CloudWatch Logs agent streams log data in near real-time to Amazon CloudWatch Logs, ensuring logs are persisted independently of the EC2 instance lifecycle. This decouples log storage from ephemeral instance store volumes, so logs are not lost during Auto Scaling termination or scaling events. The agent handles log rotation, compression, and encryption in transit, providing a durable and centralized log solution.
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.
- ✗
Increase the size of the instance store volumes.
Why it's wrong here
Instance store is ephemeral; logs still lost on termination.
- ✗
Use an Amazon EFS file system and mount it to each instance for log storage.
Why it's wrong here
EFS provides persistent storage, but logs are still at risk if application stops writing.
- ✗
Configure the Auto Scaling group to terminate instances after logs are copied to S3.
Why it's wrong here
No automatic mechanism; logs may be lost during scale-in.
- ✓
Install the CloudWatch Logs agent on each instance and stream logs to CloudWatch Logs.
Why this is correct
Real-time streaming to CloudWatch prevents loss.
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 assume instance store volumes are persistent or that increasing their size provides durability, when in fact instance store volumes are ephemeral and tied to the instance lifecycle, making them unsuitable for critical log data that must survive termination.
Detailed technical explanation
How to think about this question
The CloudWatch Logs agent uses the PutLogEvents API to send log events over HTTPS (port 443) to CloudWatch Logs, with a default batch interval of 5 seconds and a batch size of up to 1 MB. Under the hood, the agent monitors log files for changes using inotify on Linux, and it can handle log rotation by tracking file inodes. In a real-world scenario, if an instance is terminated abruptly (e.g., Spot Instance interruption), the agent may lose the last few seconds of logs that were not yet flushed; to mitigate this, you can configure the agent with a smaller batch interval or use the CloudWatch Logs unified agent with a more robust buffering mechanism.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Resilient Cloud Solutions — study guide chapter
Learn the concepts, then practise the questions
- →
Resilient Cloud Solutions practice questions
Targeted practice on this topic area only
- →
All DOP-C02 questions
1,750 questions across all exam domains
- →
AWS Certified DevOps Engineer Professional DOP-C02 study guide
Full concept coverage aligned to exam objectives
- →
DOP-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related DOP-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Configuration Management and IaC practice questions
Practise DOP-C02 questions linked to Configuration Management and IaC.
Resilient Cloud Solutions practice questions
Practise DOP-C02 questions linked to Resilient Cloud Solutions.
Monitoring and Logging practice questions
Practise DOP-C02 questions linked to Monitoring and Logging.
Incident and Event Response practice questions
Practise DOP-C02 questions linked to Incident and Event Response.
Security and Compliance practice questions
Practise DOP-C02 questions linked to Security and Compliance.
SDLC Automation practice questions
Practise DOP-C02 questions linked to SDLC Automation.
DOP-C02 fundamentals practice questions
Practise DOP-C02 questions linked to DOP-C02 fundamentals.
DOP-C02 scenario practice questions
Practise DOP-C02 questions linked to DOP-C02 scenario.
DOP-C02 troubleshooting practice questions
Practise DOP-C02 questions linked to DOP-C02 troubleshooting.
Practice this exam
Start a free DOP-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this DOP-C02 question test?
Resilient Cloud Solutions — This question tests Resilient Cloud Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Install the CloudWatch Logs agent on each instance and stream logs to CloudWatch Logs. — Option D is correct because the CloudWatch Logs agent streams log data in near real-time to Amazon CloudWatch Logs, ensuring logs are persisted independently of the EC2 instance lifecycle. This decouples log storage from ephemeral instance store volumes, so logs are not lost during Auto Scaling termination or scaling events. The agent handles log rotation, compression, and encryption in transit, providing a durable and centralized log solution.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More DOP-C02 practice questions
- A company uses AWS CodePipeline with a multi-branch strategy. A new feature branch triggers a pipeline that runs unit te…
- A development team uses AWS CodeBuild to compile a Java application and run unit tests. The build takes 30 minutes, but…
- A company uses AWS CodePipeline with multiple stages: Source (Amazon S3), Build (AWS CodeBuild), and Deploy (AWS CodeDep…
- A company uses AWS CodeCommit for source control. Developers frequently push large binary files (e.g., compiled JARs) to…
- A company runs a Stateful application on EC2 that requires sticky sessions. They use an ALB with duration-based stickine…
- An organization uses AWS CodePipeline to orchestrate deployments to multiple environments (dev, test, prod). Each enviro…
Last reviewed: Jul 4, 2026
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
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.