- A
Define a custom platform version in the Elastic Beanstalk environment's configuration using a platform definition file.
This is necessary to register the custom platform.
- B
Set the environment's platform to 'Custom' and provide the S3 URL of the platform artifacts.
Why wrong: There is no 'Custom' platform option; you must use the platform ARN.
- C
Create a Dockerfile in the application source bundle to define the custom platform.
Why wrong: Dockerfile is for Docker platforms, not custom platforms.
- D
Specify the custom platform ARN in the environment's configuration.
The platform ARN is required to use the custom platform.
- E
Upload the Packer template to the Elastic Beanstalk console.
Why wrong: Packer templates are not uploaded to Elastic Beanstalk; they are used offline to create the platform.
Quick Answer
The answer is that you must create a platform version resource in the environment configuration and then specify the custom platform ARN in that same configuration. This is because a custom platform built with Packer produces artifacts stored in S3, and Elastic Beanstalk needs an explicit platform version resource to reference those artifacts as a deployable platform; the ARN then ties that resource to your environment, telling Beanstalk which custom platform to use. On the AWS Certified Developer Associate DVA-C02 exam, this tests your understanding of the custom platform lifecycle—a common trap is confusing the Packer template itself with the platform version, or thinking you need a Dockerfile for a non-Docker custom platform. Remember that the Packer template builds the AMI, but the platform version resource is what makes that AMI available to Beanstalk. A helpful memory tip: "Packer builds the image, but the platform version resource is the bridge to your environment."
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 developer is deploying a web application using AWS Elastic Beanstalk. The application requires a custom platform that is not provided by Elastic Beanstalk. The developer has created a custom platform using the Packer tool and has stored the platform artifacts in an Amazon S3 bucket. Which TWO steps are necessary to use this custom platform in Elastic Beanstalk? (Choose TWO.)
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
Define a custom platform version in the Elastic Beanstalk environment's configuration using a platform definition file.
Options A and D are correct. First, the developer must create a platform version resource in the Elastic Beanstalk environment configuration (option A). Then, the developer must specify the platform ARN in the environment's configuration (option D). Option B is incorrect because the platform is defined by the platform version, not the environment name. Option C is incorrect because the Packer template is used to build the platform, but the platform version resource points to the artifacts in S3. Option E is incorrect because the custom platform does not require a Dockerfile; it uses a custom AMI or other artifacts.
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.
- ✓
Define a custom platform version in the Elastic Beanstalk environment's configuration using a platform definition file.
Why this is correct
This is necessary to register the custom platform.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Set the environment's platform to 'Custom' and provide the S3 URL of the platform artifacts.
Why it's wrong here
There is no 'Custom' platform option; you must use the platform ARN.
- ✗
Create a Dockerfile in the application source bundle to define the custom platform.
Why it's wrong here
Dockerfile is for Docker platforms, not custom platforms.
- ✓
Specify the custom platform ARN in the environment's configuration.
Why this is correct
The platform ARN is required to use the custom platform.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Upload the Packer template to the Elastic Beanstalk console.
Why it's wrong here
Packer templates are not uploaded to Elastic Beanstalk; they are used offline to create the platform.
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 DVA-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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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: Define a custom platform version in the Elastic Beanstalk environment's configuration using a platform definition file. — Options A and D are correct. First, the developer must create a platform version resource in the Elastic Beanstalk environment configuration (option A). Then, the developer must specify the platform ARN in the environment's configuration (option D). Option B is incorrect because the platform is defined by the platform version, not the environment name. Option C is incorrect because the Packer template is used to build the platform, but the platform version resource points to the artifacts in S3. Option E is incorrect because the custom platform does not require a Dockerfile; it uses a custom AMI or other artifacts.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-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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