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AWS - DVA-C02

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300

Practice questions

5

DVA-C02 domains

65

Real exam questions

May 2026

Last reviewed

DVA-C02 · 65 questions · 130 min · passing score 720/1000

The real reason candidates miss DVA-C02

It is not the CloudFormation feature set. It is the exact job.

Developer Associate questions often put four valid CloudFormation functions or AWS developer tools side by side. The exam tests whether you picked the one that does the exact job in the stem, not a near-neighbor in the same family. AnyCert drills that judgment.

DVA-C02 deployment scenarioCorrect answer marked

When constructing a UserData script within a CloudFormation template, a developer needs to inject several template variables into a long bash script without relying on complex string concatenation. Which intrinsic function is best suited for this?

A.

Use Fn::Join to combine literal script sections with referenced variables using a newline delimiter.

Join can build a string, but the stem asks for direct variable substitution inside a long script without manual concatenation.

B.

Use Fn::Select to extract the required string portion from a comma-delimited list of predefined variables.

Select pulls list elements. It does not inject template variables into a script body.

C.

Use Fn::Sub to replace variables enclosed in curly braces with their evaluated values within the script block.

Fn::Sub is the CloudFormation function built for inline variable substitution.

D.

Use Fn::Base64 to automatically decode the provided script and substitute the runtime variables securely.

Base64 is part of UserData formatting, not variable substitution. It sounds adjacent, but it does the wrong job.

The pattern

DVA-C02 keeps several AWS-native options in the same answer set. Three belong in the toolchain. Only one matches the exact task. The bank drills that until service families stop blurring together.

Sample questions

See the question bank in context.

Every answer review is built to explain the correct choice, the trap answer, and the next study move.

DeploymentCorrect: C

A development team has pushed a new Docker image tag to Amazon ECR and needs to update their running Amazon ECS service to use this new image. What is the standard process to deploy the update to the ECS service?

A. SSH into the underlying EC2 instances, run docker pull to get the new image, and restart the Docker daemon.

B. Update the ECS cluster configuration to point to the new ECR image URI and restart the cluster.

C. Create a new task definition revision that references the new ECR image URI, and update the ECS service to use the new revision.

D. Modify the existing task definition in place with the new ECR image URI, which automatically triggers a service update.

Create a new task definition revision referencing the new image, then update the service to use that revision.

SecurityCorrect: C

A mobile app requires a managed service for user sign‑up, sign‑in, password recovery, and MFA. Which AWS service should be used?

Amazon Cognito User Pools provide a fully managed user directory with built‑in sign‑in and MFA capabilities.

Development with AWS ServicesCorrect: A

After adding a new GET /users method to an existing API Gateway REST API, clients receive 403/404 errors. What must be done to make the endpoint reachable?

Deploy the API changes to an active stage (e. g.

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Question 18 - Deployment

Which CloudFormation function is built for injecting variables directly into a long UserData script?

Your answer: Fn::Join.

Correct: Fn::Sub.

Fn::Join still gets the script built. Why is that not the best answer?

Because the stem is asking for the cleanest way to inject variables inside the script. Join works, but it forces manual concatenation. Fn::Sub exists for exactly this use case.

So what should I watch for on DVA-C02?

Look for the exact verb in the stem: substitute, select, join, encode, trigger, cache. AWS gives you several nearby tools. The exam rewards the one that does the precise job with the least extra work.

Content trust

Aligned to DVA-C02. Built for real AWS developer decisions.

This exam does not reward broad AWS familiarity. It rewards precise service and function choice. Here is what is in the bank.

Mapped to all 5 DVA-C02 domains

Deployment, Security, Development with AWS Services, Refactoring, and Monitoring and Troubleshooting. The bank follows the current associate blueprint.

65-question, 130-minute exam shape

You train the real decision patterns DVA-C02 asks: Lambda events, IAM credential flow, CloudFormation functions, CI/CD, and service integration tradeoffs.

300 current practice questions

You get 300 DVA-C02 questions across deployment, serverless, data stores, permissions, and troubleshooting - all in one focused path.

Why-right / why-wrong explanations

Every explanation names why a near-neighbor AWS function or service was tempting, and why it still loses on the exact wording in the stem.

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Frequently asked questions

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