AWS · DVA-C02 · Intermediate

AWS Developer - Associate (DVA-C02) — Practice Questions and Mock Exam

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Author: Pass-IT

The AWS Certified Developer – Associate validates the ability to develop, deploy, and debug cloud-based applications using AWS services.

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Official DVA-C02 exam: 720 out of 1000 points to pass.

Checked against AWS · September 2026 · Current exam version

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Development with AWS Services1 / 5

A developer is implementing a DynamoDB query for a table with a composite primary key (partition key: UserId, sort key: Timestamp). The developer wants to retrieve all items for a specific user where the timestamp is between two dates. Which approach should the developer use?

AlexFull explanation from Alex

For a table with a composite primary key, Query requires partition-key equality and can include a sort-key condition such as BETWEEN, begins_with, greater than, or less than. In this case, UserId is the partition key and Timestamp is the sort key, so querying a user between two timestamps belongs in the KeyConditionExpression. Scan is inefficient for known partition-key access. A Query FilterExpression is not a substitute for a key condition: it cannot reference key attributes, and filtering happens after DynamoDB reads the matching item set.

Sourcedocs.aws.amazon.com

Troubleshooting and Optimization4 / 5

A developer is handling large result sets from a DynamoDB Scan operation. The Scan is consuming too many read capacity units and causing throttling. Which optimization should the developer implement?

AlexFull explanation from Alex

DynamoDB Scan reads the table or index before filtering, so large pages can consume a lot of read capacity at once. AWS recommends avoiding Scan on large tables when possible, designing for Query access patterns, and minimizing Scan impact by reducing page size with Limit. Smaller pages create pauses between requests and reduce per-request capacity spikes. For throttled requests, use SDK retries with exponential backoff or client-side rate limiting. Parallel Scan should be used carefully because multiple workers can quickly consume all provisioned read capacity.

Sourcedocs.aws.amazon.com

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Questions: 65
Minutes: 130

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What you practice for DVA-C02.

Exam topics, relevant practice and sources you can check.

Developing with AWS servicesSee the guide for weighting142 QuestionsPass-IT questions

Write application code that uses AWS services, handles failures and stores data appropriately.

Implement resilient code using APIs, SDKs, messaging and event-driven patterns, with unit tests and error handling for service integrations.
Configure and test AWS Lambda functions, including events, permissions, private-network access, concurrency and performance settings.
Use data stores according to access patterns, choosing DynamoDB keys and indexes, consistency, queries, caching and data lifecycles appropriately.

Official certification objectives

Application securitySee the guide for weighting72 QuestionsPass-IT questions

Control who can use an application and protect its data, credentials and service connections.

Implement authentication and authorization with identity providers, tokens and IAM roles, including fine-grained and cross-service access.
Apply encryption at rest and in transit, managing keys, certificates and rotation, including encryption across AWS accounts.
Protect sensitive values with secrets management, masking and sanitization, including safe data-access patterns for applications serving multiple tenants.

Official certification objectives

Testing and deploymentSee the guide for weighting67 QuestionsPass-IT questions

Prepare application releases, test them in suitable environments and deploy through existing AWS delivery workflows.

Package code and dependencies with the configuration and resource requirements needed by each deployment environment.
Test deployed applications, integrations and event handling using development endpoints, mocks and stack updates.
Automate repeatable tests with test events, approved versions and infrastructure-as-code templates, keeping development, test and production environments distinct.
Use continuous integration and delivery (CI/CD) services to release code, manage versions and roll back through suitable deployment strategies.

Official certification objectives

Troubleshooting and optimizationSee the guide for weighting57 QuestionsPass-IT questions

Use application evidence to find failures and improve performance and resource use.

Trace root causes through code, metrics, logs and traces, including failures in deployments and service integrations.
Instrument applications with structured logs, custom metrics, tracing, alerts and health checks so their behavior is visible.
Profile bottlenecks and tune resource use, concurrency, messaging filters and caching to improve application performance.

Official certification objectives

Question formats you can practice

Multiple Choice: Select one answer.
Multiple Response: Select multiple applicable answers.

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Source check: The answer, answer options and explanation are checked against official documentation. We call this canonical validation.

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Learning objectives: We count specific exam topics with clearly linked exercises. Subheadings are not counted separately.

The figures refer to available questions in each DVA-C02 exam domain. The additional review count includes matching review logs for the current question version, even if errors were found. It is not an error-free rate.

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Your preparation

How much study time should I plan for DVA-C02?

For planning, Pass-IT estimates roughly 25–70 hours. Relevant experience may put you toward the lower end; starting from scratch may put you toward the higher end. Your needs may fall outside this range. This is not a time requirement from AWS or a promise that you will be exam-ready within that time.

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Questions in the app are currently in English. Translations of the sample questions on this page apply only to this preview. Check with AWS for the languages available for the official exam.

How long does my DVA-C02 access last?

Access covers this certification for 12 months. You pay once, with no automatic renewal.

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The guarantee refunds the Pass-IT purchase price for this certification. You need eligible paid access and a Readiness Score of at least 80% from your practice results when you take the exam. This score can only reach 80% after at least 50 answered questions and is not a validated probability of passing. Take the exam during your access period and submit official proof of failing within 14 days. Guarantee terms

About the DVA-C02 exam

Where can I take the DVA-C02 exam?

Pearson VUE testing center or online proctored exam.

How long is the AWS Certified Developer - Associate exam?

The DVA-C02 exam has 65 questions and a 130-minute time limit.

What experience do you need for AWS Developer Associate?

AWS sets no formal prerequisite and writes DVA-C02 for people with at least a year of hands-on experience building and maintaining applications on AWS. The questions assume you have worked with Lambda limits, DynamoDB key design and IAM from an application's point of view.

How long is AWS Developer Associate valid?

Three years. Before your certification expires, pass the latest version of this exam or the AWS Certified DevOps Engineer - Professional exam (DOP-C02) to renew it for three years. Alternatively, while your certification is active, maintain it on AWS Skill Builder to add one year.

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