- A
Modify the application to write logs to stdout, as ECS automatically captures stdout to CloudWatch Logs.
Why wrong: ECS does not automatically send logs; you must configure the log driver.
- B
Install the CloudWatch Agent inside the container and configure it to tail the log file.
Why wrong: While possible, using the awslogs log driver is the recommended approach for ECS.
- C
Configure the ECS task definition to use the 'awslogs' log driver and specify the log group.
The awslogs log driver sends container stdout/stderr to CloudWatch Logs.
- D
Mount an Amazon S3 bucket and write logs to S3, then use a Lambda function to send them to CloudWatch.
Why wrong: This is overly complex and not a standard practice.
Question 138 of 1,616
DVA-C02 Deployment Practice Question
This DVA-C02 practice question tests your understanding of deployment. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 has a legacy application that runs on an Amazon EC2 instance. The developer is tasked with containerizing the application and deploying it on Amazon ECS with Fargate. The application writes logs to a local file. What should the developer do to ensure logs are available in Amazon CloudWatch Logs?
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
✓
Configure the ECS task definition to use the 'awslogs' log driver and specify the log group.
Option C is correct because the 'awslogs' log driver in the ECS task definition automatically captures container logs and sends them to CloudWatch Logs without requiring any application changes. When using Fargate, the ECS agent configures the Docker daemon to use this driver, and logs are streamed directly to the specified log group and stream. This is the standard, recommended approach for centralized logging with ECS.
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.
- ✗
Modify the application to write logs to stdout, as ECS automatically captures stdout to CloudWatch Logs.
Why it's wrong here
ECS does not automatically send logs; you must configure the log driver.
- ✗
Install the CloudWatch Agent inside the container and configure it to tail the log file.
Why it's wrong here
While possible, using the awslogs log driver is the recommended approach for ECS.
- ✓
Configure the ECS task definition to use the 'awslogs' log driver and specify the log group.
Why this is correct
The awslogs log driver sends container stdout/stderr to CloudWatch Logs.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Mount an Amazon S3 bucket and write logs to S3, then use a Lambda function to send them to CloudWatch.
Why it's wrong here
This is overly complex and not a standard practice.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume ECS automatically captures all logs from the container, but in reality, only stdout/stderr are captured by the log driver, so logs written to a local file require either application modification or a sidecar approach.
Detailed technical explanation
How to think about this question
The 'awslogs' log driver uses the Docker log driver interface to send log entries to CloudWatch Logs via the AWS API, supporting multi-line log events and automatic log stream creation based on the container name and task ID. Under the hood, the ECS agent configures the Docker daemon with the 'awslogs' driver and passes the log group, region, and optional log stream prefix from the task definition. A subtle behavior is that if the application writes logs to a file, the 'awslogs' driver will not capture them unless the application also writes to stdout/stderr, so the developer must either modify the app or use a sidecar container to tail the file and output to stdout.
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.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure the ECS task definition to use the 'awslogs' log driver and specify the log group. — Option C is correct because the 'awslogs' log driver in the ECS task definition automatically captures container logs and sends them to CloudWatch Logs without requiring any application changes. When using Fargate, the ECS agent configures the Docker daemon to use this driver, and logs are streamed directly to the specified log group and stream. This is the standard, recommended approach for centralized logging with ECS.
What should I do if I get this DVA-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: Jul 4, 2026
This DVA-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 DVA-C02 exam.
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