The AWS Certified Developer – Associate DVA-C02 requires a clear understanding of key concepts and the ability to apply them under pressure. This practice test is designed to help you develop both skills. As you work through the questions, focus on accuracy and reasoning. Over time, this approach will help you achieve better results.
Updated for 2026: This guide provides a structured approach to help you prepare effectively, understand key concepts, and practice real exam-level questions.
How to Use This Practice Test
- Start by reviewing key concepts before attempting questions
- Take the test in a timed environment
- Analyze your mistakes and revisit weak areas
Why This Practice Test Matters
This practice test is designed to simulate the real exam environment and help you identify knowledge gaps, improve accuracy, and build confidence.
| Exam Name | DVA-C02 Practice Exam – AWS Certified Developer Associate (2026 Updated) |
|---|---|
| Exam Provider | Amazon Web Services (AWS) |
| Certification Type | Associate-Level Certification (Application Development, Serverless & DevOps on AWS) |
| Total Practice Questions | 150 Advanced MCQs (Scenario-Based + Lambda + API Gateway + CI/CD + Debugging + Security) |
| Exam Domains Covered | • Development with AWS Services (Lambda, DynamoDB, S3, API Gateway) • Security (IAM, Cognito, KMS, Secrets Manager, STS) • Deployment (CodePipeline, CodeBuild, CodeDeploy, CloudFormation) • Troubleshooting & Monitoring (CloudWatch, X-Ray, Logs Insights) • Event-Driven Architecture (SQS, SNS, EventBridge, Kinesis) |
| Questions in Real Exam | • Total: ~65 Questions • Highly scenario-based with real-world application cases • Focus on debugging, integration, and service selection |
| Exam Duration | • Total Time: 130 Minutes • Fast-paced with practical problem-solving questions • Requires hands-on AWS development experience |
| Passing Score | • Scaled Score: 720 / 1000 • Requires solid knowledge of AWS services and development practices • Emphasis on real-world debugging and architecture decisions |
| Question Format | • Multiple Choice & Multiple Response • Scenario-Based Application Development Questions • CI/CD & Deployment Pipelines • Debugging & Performance Optimization • Security & Access Control Scenarios |
| Difficulty Level | Intermediate to Advanced (Hands-On Development + Real Exam Scenarios) |
| Key Knowledge Areas | • Serverless development (Lambda, API Gateway, Step Functions) • Event-driven systems (SNS, SQS, EventBridge, Kinesis) • CI/CD pipelines (CodePipeline, CodeBuild, CodeDeploy) • Security (IAM roles, Cognito auth, KMS encryption, STS) • Monitoring & debugging (CloudWatch, X-Ray, Logs Insights) • Data storage (DynamoDB, S3, RDS) |
| Common Exam Traps | • Confusing SNS vs SQS (fan-out vs queue) • Ignoring Lambda retries, DLQs, and idempotency • Misconfiguring IAM roles and permission boundaries • Overusing EC2 instead of serverless solutions • Missing API Gateway throttling, caching, or auth settings • Ignoring concurrency limits and cold start behavior • Choosing incorrect database (DynamoDB vs RDS) |
| Skills Developed | • Building scalable serverless applications • Designing event-driven architectures • Implementing secure and compliant AWS solutions • Automating deployments with CI/CD pipelines • Debugging distributed systems effectively • Optimizing application performance and cost |
| Study Strategy | • Focus on Lambda + API Gateway integration scenarios • Practice messaging patterns (SNS vs SQS vs Kinesis) • Learn CI/CD deeply (CodePipeline, CodeBuild, CodeDeploy) • Understand IAM policies and least privilege design • Use CloudWatch and X-Ray for debugging practice • Take full-length timed mock exams • Analyze explanations to identify hidden exam traps |
| Best For | • Software developers building AWS applications • Backend engineers working on serverless architectures • DevOps engineers managing CI/CD pipelines • Professionals transitioning into AWS development roles |
| Career Benefits | • Validates real-world AWS development expertise • Opens roles in backend, cloud, and serverless engineering • Enhances debugging and architecture design skills • Increases earning potential in cloud-focused roles • Builds foundation for AWS Professional certifications |
| Updated | 2026 Latest Version – Based on AWS DVA-C02 Exam Guide & Real Exam Patterns |
1.
A developer wants to run backend code triggered by HTTP requests without managing servers. What is BEST?
A. EC2
B. Lambda + API Gateway
C. RDS
D. EBS
Answer: B
Rationale: Combining API Gateway with Lambda enables a fully serverless backend. API Gateway handles routing, throttling, and authentication, while Lambda executes code on demand without server management.
2.
A developer needs a highly scalable NoSQL database with single-digit millisecond latency. What is BEST?
A. RDS
B. DynamoDB
C. Redshift
D. Aurora
Answer: B
Rationale: DynamoDB is designed for low-latency, high-throughput workloads with automatic scaling and managed infrastructure, making it ideal for real-time applications.
3.
A Lambda function must securely access an S3 bucket. What is BEST?
A. Hardcoded credentials
B. IAM role attached to Lambda
C. Store keys in code
D. Use EC2
Answer: B
Rationale: IAM roles provide temporary, secure credentials without embedding secrets in code, following AWS security best practices.
4.
A developer wants to trigger a Lambda function when a file is uploaded to S3. What is BEST?
A. CloudWatch
B. S3 event notification
C. EC2
D. RDS
Answer: B
Rationale: S3 event notifications automatically trigger Lambda functions upon object creation, enabling event-driven architectures.
5.
A developer needs to decouple microservices with guaranteed message delivery. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: B
Rationale: SQS provides reliable message delivery with durability and retry mechanisms, ensuring messages are not lost.
6.
A developer wants pub/sub messaging. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: A
Rationale: SNS allows multiple subscribers to receive messages, enabling event-driven communication.
7.
A developer needs to cache frequently accessed data. What is BEST?
A. RDS
B. ElastiCache
C. DynamoDB
D. S3
Answer: B
Rationale: ElastiCache stores data in memory, reducing latency and improving performance for frequently accessed data.
8.
A developer wants to deploy code automatically after Git commits. What is BEST?
A. CodePipeline
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodePipeline automates CI/CD workflows, integrating with repositories and deployment services.
9.
A developer needs to monitor application logs. What is BEST?
A. CloudTrail
B. CloudWatch Logs
C. Config
D. Lambda
Answer: B
Rationale: CloudWatch Logs collects and stores application logs for monitoring and troubleshooting.
10.
A developer wants to track AWS API calls. What is BEST?
A. CloudTrail
B. CloudWatch
C. Config
D. Lambda
Answer: A
Rationale: CloudTrail records API calls for auditing and security.
11.
A developer needs secure storage for secrets. What is BEST?
A. S3
B. Secrets Manager
C. CloudWatch
D. Lambda
Answer: B
Rationale: Secrets Manager securely stores and rotates credentials with encryption.
12.
A developer wants to define infrastructure as code. What is BEST?
A. CloudFormation
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CloudFormation enables repeatable infrastructure deployment using templates.
13.
A developer needs authentication for APIs. What is BEST?
A. IAM
B. API Gateway authorizer
C. S3
D. EC2
Answer: B
Rationale: API Gateway authorizers provide authentication and authorization.
14.
A developer wants serverless workflows. What is BEST?
A. Step Functions
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Step Functions orchestrate workflows across services.
15.
A developer needs relational database. What is BEST?
A. RDS
B. DynamoDB
C. S3
D. EC2
Answer: A
Rationale: RDS provides managed relational database services.
16.
A developer wants to store static files. What is BEST?
A. S3
B. EC2
C. RDS
D. DynamoDB
Answer: A
Rationale: S3 is ideal for static storage.
17.
A developer needs to process events asynchronously. What is BEST?
A. SQS
B. EC2
C. RDS
D. EBS
Answer: A
Rationale: SQS enables asynchronous processing.
18.
A developer wants to automate builds. What is BEST?
A. CodeBuild
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodeBuild compiles and tests code automatically.
19.
A developer needs to encrypt data at rest. What is BEST?
A. IAM
B. KMS
C. CloudWatch
D. Lambda
Answer: B
Rationale: KMS manages encryption keys.
20.
A developer wants to scale applications automatically. What is BEST?
A. Auto Scaling
B. EC2 manual
C. S3
D. RDS
Answer: A
Rationale: Auto Scaling adjusts resources automatically.
21.
A developer needs distributed tracing. What is BEST?
A. CloudTrail
B. X-Ray
C. Config
D. S3
Answer: B
Rationale: X-Ray traces requests across services.
22.
A developer wants API throttling. What is BEST?
A. API Gateway throttling
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Throttling protects backend systems.
23.
A developer wants secure file uploads. What is BEST?
A. Public S3
B. Pre-signed URLs
C. EC2
D. RDS
Answer: B
Rationale: Pre-signed URLs allow secure uploads.
24.
A developer needs event-driven architecture. What is BEST?
A. EventBridge
B. EC2
C. RDS
D. S3
Answer: A
Rationale: EventBridge enables event routing.
25.
A developer wants container orchestration. What is BEST?
A. ECS
B. EC2
C. S3
D. RDS
Answer: A
Rationale: ECS manages containers.
26.
A developer wants serverless containers. What is BEST?
A. ECS
B. Fargate
C. EC2
D. Lambda
Answer: B
Rationale: Fargate removes server management.
27.
A developer needs high-throughput streaming ingestion. What is BEST?
A. SNS
B. Kinesis
C. Lambda
D. EC2
Answer: B
Rationale: Kinesis handles real-time streaming data.
28.
A developer wants centralized metrics. What is BEST?
A. CloudWatch
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: CloudWatch aggregates metrics.
29.
A developer needs CI/CD pipeline. What is BEST?
A. CodePipeline
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodePipeline automates CI/CD.
30.
A developer wants serverless backend architecture. What is BEST?
A. Lambda + API Gateway
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Serverless architecture reduces operational overhead and scales automatically based on demand.
31.
A Lambda function is invoked asynchronously and fails after multiple retries. What happens next?
A. It is deleted
B. Sent to DLQ if configured
C. Stored in S3
D. Ignored
Answer: B
Rationale: When Lambda asynchronous retries are exhausted, the event is sent to a configured DLQ or on-failure destination. This allows investigation and prevents silent data loss in production pipelines.
32.
A developer wants to ensure exactly-once processing with SQS. What is BEST?
A. SNS
B. SQS FIFO queue
C. Lambda
D. EC2
Answer: B
Rationale: FIFO queues provide exactly-once processing and message ordering, making them ideal for workflows where duplicates or out-of-order processing are unacceptable.
33.
A Lambda function experiences cold start delays. What is BEST?
A. Increase timeout
B. Provisioned concurrency
C. Use EC2
D. Use S3
Answer: B
Rationale: Provisioned concurrency keeps Lambda instances initialized and ready, eliminating cold starts for latency-sensitive workloads.
34.
A developer wants to restrict API access based on IP. What is BEST?
A. IAM
B. API Gateway resource policy
C. S3
D. EC2
Answer: B
Rationale: Resource policies allow IP-based restrictions, adding a security layer without modifying backend logic.
35.
A developer needs to retry failed SQS messages. What is BEST?
A. Ignore
B. Visibility timeout + DLQ
C. EC2
D. S3
Answer: B
Rationale: Visibility timeout prevents immediate retries, and DLQ captures messages after retry attempts fail, ensuring reliability.
36.
A developer wants to deploy infrastructure safely. What is BEST?
A. Manual deployment
B. CloudFormation change sets
C. EC2
D. S3
Answer: B
Rationale: Change sets preview updates before execution, reducing deployment risks.
37.
A developer wants to trace distributed applications. What is BEST?
A. CloudTrail
B. X-Ray
C. Config
D. S3
Answer: B
Rationale: X-Ray traces requests across services.
38.
A developer needs temporary credentials. What is BEST?
A. Hardcode
B. STS
C. S3
D. EC2
Answer: B
Rationale: STS provides temporary credentials, improving security.
39.
A developer wants to throttle API requests. What is BEST?
A. IAM
B. API Gateway throttling
C. S3
D. EC2
Answer: B
Rationale: API Gateway throttling protects backend systems.
40.
A developer wants to handle duplicate events. What is BEST?
A. Ignore
B. Idempotent processing
C. EC2
D. S3
Answer: B
Rationale: Idempotency ensures consistent results.
41.
A developer wants to secure S3 uploads. What is BEST?
A. Public access
B. Pre-signed URLs
C. EC2
D. RDS
Answer: B
Rationale: Pre-signed URLs provide temporary secure access.
42.
A developer wants event filtering. What is BEST?
A. EventBridge rules
B. EC2
C. S3
D. RDS
Answer: A
Rationale: EventBridge filters events efficiently.
43.
A developer wants to cache API responses. What is BEST?
A. DynamoDB
B. API Gateway caching
C. EC2
D. RDS
Answer: B
Rationale: API Gateway caching reduces backend calls.
44.
A developer needs ordered event processing. What is BEST?
A. SNS
B. SQS FIFO
C. Lambda
D. EC2
Answer: B
Rationale: FIFO ensures ordering.
45.
A developer wants CI/CD rollback. What is BEST?
A. Manual
B. CodeDeploy rollback
C. EC2
D. S3
Answer: B
Rationale: CodeDeploy supports rollback.
46.
A developer wants environment isolation. What is BEST?
A. Single account
B. Multiple environments with IAM roles
C. EC2
D. S3
Answer: B
Rationale: Separate environments improve security.
47.
A developer wants secure API auth. What is BEST?
A. IAM
B. Cognito
C. S3
D. EC2
Answer: B
Rationale: Cognito handles authentication.
48.
A developer wants to monitor latency. What is BEST?
A. CloudTrail
B. CloudWatch
C. Config
D. Lambda
Answer: B
Rationale: CloudWatch tracks latency.
49.
A developer wants message fan-out. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: A
Rationale: SNS supports fan-out.
50.
A developer needs reliable queue processing. What is BEST?
A. SNS
B. SQS + DLQ
C. Lambda
D. EC2
Answer: B
Rationale: DLQ ensures failed messages are retained.
51.
A developer wants streaming ingestion. What is BEST?
A. SNS
B. Kinesis
C. Lambda
D. EC2
Answer: B
Rationale: Kinesis handles streaming.
52.
A developer wants secure secrets. What is BEST?
A. Hardcode
B. Secrets Manager
C. S3
D. EC2
Answer: B
Rationale: Secrets Manager stores securely.
53.
A developer wants monitoring alerts. What is BEST?
A. CloudWatch alarms
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: Alarms notify issues.
54.
A developer wants automated builds. What is BEST?
A. CodeBuild
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodeBuild automates builds.
55.
A developer wants workflow automation. What is BEST?
A. Step Functions
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Step Functions orchestrate workflows.
56.
A developer wants scalable DB. What is BEST?
A. DynamoDB
B. RDS
C. EC2
D. S3
Answer: A
Rationale: DynamoDB scales automatically.
57.
A developer wants relational DB. What is BEST?
A. RDS
B. DynamoDB
C. Redshift
D. S3
Answer: A
Rationale: RDS provides relational DB.
58.
A developer wants API security. What is BEST?
A. IAM
B. API Gateway authorizer
C. S3
D. EC2
Answer: B
Rationale: Authorizers secure APIs.
59.
A developer wants centralized logs. What is BEST?
A. CloudWatch Logs
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: CloudWatch centralizes logs.
60.
A developer wants serverless backend. What is BEST?
A. Lambda + API Gateway
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Serverless architecture scales automatically and reduces operational overhead.
61.
A Lambda function processing Kinesis data falls behind. What is the BEST action?
A. Reduce shards
B. Increase shards and parallelization factor
C. Use S3
D. Use RDS
Answer: B
Rationale: Increasing shard count improves ingestion throughput, while parallelization factor allows multiple concurrent Lambda executions per shard, reducing backlog and iterator age effectively.
62.
A developer wants to prevent duplicate processing in SQS. What is BEST?
A. Ignore duplicates
B. Use FIFO queue with deduplication ID
C. Use EC2
D. Use S3
Answer: B
Rationale: FIFO queues support deduplication IDs to prevent duplicate messages within a defined window, ensuring exactly-once processing semantics.
63.
A Lambda function must access an RDS instance in a private subnet. What is REQUIRED?
A. Nothing
B. Configure Lambda in VPC
C. Use S3
D. Use EC2
Answer: B
Rationale: Lambda must be configured with VPC subnets and security groups to access private RDS resources, otherwise network connectivity is not possible.
64.
A developer wants to enforce encryption for S3 uploads. What is BEST?
A. IAM
B. Bucket policy with condition
C. EC2
D. RDS
Answer: B
Rationale: Bucket policies can enforce encryption using conditions like s3:x-amz-server-side-encryption, ensuring all uploaded objects are encrypted.
65.
A developer needs to handle partial failures in batch processing. What is BEST?
A. Retry entire batch
B. Partial batch response
C. Ignore failures
D. Use EC2
Answer: B
Rationale: Partial batch response allows successful records to be processed while retrying only failed ones, improving efficiency and reducing duplicate processing.
66.
A developer wants to limit Lambda execution concurrency. What is BEST?
A. Increase memory
B. Reserved concurrency
C. Use S3
D. Use RDS
Answer: B
Rationale: Reserved concurrency sets a limit for a function, preventing it from consuming all available account concurrency.
67.
A developer needs secure API authentication. What is BEST?
A. IAM only
B. Cognito user pools
C. S3
D. EC2
Answer: B
Rationale: Cognito user pools provide authentication, token issuance, and integration with API Gateway.
68.
A developer wants to deploy infrastructure with version control. What is BEST?
A. Manual
B. CloudFormation
C. EC2
D. S3
Answer: B
Rationale: CloudFormation templates can be version-controlled and reused.
69.
A developer needs to retry failed asynchronous Lambda events. What is BEST?
A. Manual retry
B. Lambda retry settings + DLQ
C. EC2
D. S3
Answer: B
Rationale: Lambda automatically retries async events and sends failures to DLQ.
70.
A developer wants API rate limiting per user. What is BEST?
A. IAM
B. API Gateway usage plans
C. S3
D. EC2
Answer: B
Rationale: Usage plans enforce quotas and throttling per API key.
71.
A developer wants distributed tracing. What is BEST?
A. CloudTrail
B. X-Ray
C. Config
D. S3
Answer: B
Rationale: X-Ray provides request tracing.
72.
A developer wants to secure secrets. What is BEST?
A. Hardcode
B. Secrets Manager
C. S3
D. EC2
Answer: B
Rationale: Secrets Manager stores securely.
73.
A developer needs messaging with fan-out. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: A
Rationale: SNS supports pub/sub.
74.
A developer wants guaranteed delivery. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: B
Rationale: SQS ensures delivery.
75.
A developer wants to monitor metrics. What is BEST?
A. CloudWatch
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: CloudWatch tracks metrics.
76.
A developer wants to debug logs. What is BEST?
A. CloudWatch Logs
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: Logs provide debugging.
77.
A developer wants CI/CD automation. What is BEST?
A. CodePipeline
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodePipeline automates CI/CD.
78.
A developer needs build automation. What is BEST?
A. CodeBuild
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodeBuild compiles and tests.
79.
A developer wants event-driven pipelines. What is BEST?
A. EventBridge
B. EC2
C. S3
D. RDS
Answer: A
Rationale: EventBridge routes events.
80.
A developer wants secure uploads. What is BEST?
A. Public S3
B. Pre-signed URLs
C. EC2
D. RDS
Answer: B
Rationale: Pre-signed URLs secure uploads.
81.
A developer needs scalable DB. What is BEST?
A. DynamoDB
B. RDS
C. EC2
D. S3
Answer: A
Rationale: DynamoDB scales.
82.
A developer needs relational DB. What is BEST?
A. RDS
B. DynamoDB
C. Redshift
D. S3
Answer: A
Rationale: RDS is relational.
83.
A developer wants caching. What is BEST?
A. ElastiCache
B. RDS
C. DynamoDB
D. S3
Answer: A
Rationale: Caching improves performance.
84.
A developer wants streaming ingestion. What is BEST?
A. SNS
B. Kinesis
C. Lambda
D. EC2
Answer: B
Rationale: Kinesis handles streaming.
85.
A developer wants encryption. What is BEST?
A. IAM
B. KMS
C. CloudWatch
D. Lambda
Answer: B
Rationale: KMS manages encryption.
86.
A developer wants monitoring alerts. What is BEST?
A. CloudWatch alarms
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: Alarms notify issues.
87.
A developer wants container orchestration. What is BEST?
A. ECS
B. EC2
C. S3
D. RDS
Answer: A
Rationale: ECS manages containers.
88.
A developer wants serverless containers. What is BEST?
A. ECS
B. Fargate
C. EC2
D. Lambda
Answer: B
Rationale: Fargate removes server management.
89.
A developer wants API security. What is BEST?
A. IAM
B. API Gateway authorizer
C. S3
D. EC2
Answer: B
Rationale: Authorizers secure APIs.
90.
A developer wants serverless backend. What is BEST?
A. Lambda + API Gateway
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Serverless backend scales automatically and reduces operational overhead.
91.
A Lambda function triggered by SQS is processing messages twice. What is the BEST solution?
A. Disable retries
B. Implement idempotent logic
C. Use EC2
D. Use S3
Answer: B
Rationale: SQS provides at-least-once delivery, meaning duplicate messages can occur. Implementing idempotent logic ensures repeated processing does not create inconsistent results.
92.
A developer wants to enforce HTTPS-only access to S3. What is BEST?
A. IAM
B. Bucket policy with aws:SecureTransport
C. EC2
D. RDS
Answer: B
Rationale: Using aws:SecureTransport condition ensures all requests use HTTPS, preventing insecure access.
93.
A developer wants to prevent Lambda from over-consuming account concurrency. What is BEST?
A. Increase timeout
B. Reserved concurrency
C. Use S3
D. Use RDS
Answer: B
Rationale: Reserved concurrency limits function execution, protecting other functions.
94.
A developer needs temporary access to AWS resources. What is BEST?
A. Hardcode credentials
B. STS temporary credentials
C. S3
D. EC2
Answer: B
Rationale: STS provides secure temporary credentials.
95.
A developer wants to process ordered messages. What is BEST?
A. SNS
B. SQS FIFO
C. Lambda
D. EC2
Answer: B
Rationale: FIFO ensures ordering and exactly-once processing.
96.
A developer wants API authentication using tokens. What is BEST?
A. IAM
B. Cognito
C. S3
D. EC2
Answer: B
Rationale: Cognito provides token-based authentication.
97.
A developer wants to reduce DynamoDB read latency. What is BEST?
A. Increase capacity
B. Use DAX
C. Use EC2
D. Use S3
Answer: B
Rationale: DAX provides in-memory caching.
98.
A developer needs to debug distributed applications. What is BEST?
A. CloudTrail
B. X-Ray
C. Config
D. S3
Answer: B
Rationale: X-Ray traces requests across services.
99.
A developer wants to automate deployments. What is BEST?
A. CodeDeploy
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodeDeploy automates deployments.
100.
A developer wants blue/green deployment. What is BEST?
A. Manual
B. CodeDeploy
C. EC2
D. S3
Answer: B
Rationale: CodeDeploy supports blue/green deployment.
101.
A developer wants API throttling. What is BEST?
A. IAM
B. API Gateway throttling
C. S3
D. EC2
Answer: B
Rationale: Throttling protects backend systems.
102.
A developer needs message fan-out. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: A
Rationale: SNS supports pub/sub.
103.
A developer wants reliable messaging. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: B
Rationale: SQS ensures delivery.
104.
A developer wants event-driven architecture. What is BEST?
A. EventBridge
B. EC2
C. RDS
D. S3
Answer: A
Rationale: EventBridge routes events.
105.
A developer needs secure secrets. What is BEST?
A. Hardcode
B. Secrets Manager
C. S3
D. EC2
Answer: B
Rationale: Secrets Manager stores securely.
106.
A developer wants centralized logging. What is BEST?
A. CloudWatch Logs
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: CloudWatch Logs centralizes logs.
107.
A developer needs monitoring alerts. What is BEST?
A. CloudWatch alarms
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: Alarms notify issues.
108.
A developer wants CI/CD automation. What is BEST?
A. CodePipeline
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodePipeline automates pipelines.
109.
A developer needs build automation. What is BEST?
A. CodeBuild
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodeBuild compiles code.
110.
A developer wants workflow orchestration. What is BEST?
A. Step Functions
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Step Functions orchestrate workflows.
111.
A developer wants scalable DB. What is BEST?
A. DynamoDB
B. RDS
C. EC2
D. S3
Answer: A
Rationale: DynamoDB scales automatically.
112.
A developer needs relational DB. What is BEST?
A. RDS
B. DynamoDB
C. Redshift
D. S3
Answer: A
Rationale: RDS is relational.
113.
A developer wants caching. What is BEST?
A. ElastiCache
B. RDS
C. DynamoDB
D. S3
Answer: A
Rationale: Caching improves performance.
114.
A developer wants streaming ingestion. What is BEST?
A. SNS
B. Kinesis
C. Lambda
D. EC2
Answer: B
Rationale: Kinesis handles streaming.
115.
A developer wants encryption. What is BEST?
A. IAM
B. KMS
C. CloudWatch
D. Lambda
Answer: B
Rationale: KMS manages encryption.
116.
A developer wants container orchestration. What is BEST?
A. ECS
B. EC2
C. S3
D. RDS
Answer: A
Rationale: ECS manages containers.
117.
A developer wants serverless containers. What is BEST?
A. ECS
B. Fargate
C. EC2
D. Lambda
Answer: B
Rationale: Fargate removes server management.
118.
A developer wants API security. What is BEST?
A. IAM
B. API Gateway authorizer
C. S3
D. EC2
Answer: B
Rationale: Authorizers secure APIs.
119.
A developer wants secure uploads. What is BEST?
A. Public S3
B. Pre-signed URLs
C. EC2
D. RDS
Answer: B
Rationale: Pre-signed URLs allow secure uploads.
120.
A developer wants serverless backend. What is BEST?
A. Lambda + API Gateway
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Serverless backend reduces operational overhead and scales automatically.
121.
A Lambda function processing SQS messages fails for some items in a batch. What is BEST?
A. Retry entire batch
B. Enable partial batch response
C. Ignore failed items
D. Use EC2
Answer: B
Rationale: Partial batch response allows successful messages to be acknowledged while only failed ones are retried, reducing duplicate processing and improving efficiency in batch processing systems.
122.
A developer wants to ensure SQS messages are retried after a delay. What is BEST?
A. Increase timeout
B. Configure visibility timeout
C. Use EC2
D. Use S3
Answer: B
Rationale: Visibility timeout prevents messages from being immediately retried while still allowing them to reappear in the queue if not processed successfully.
123.
A developer wants to restrict S3 access to a specific VPC endpoint. What is BEST?
A. IAM
B. Bucket policy with aws:SourceVpce
C. EC2
D. RDS
Answer: B
Rationale: Using aws:SourceVpce condition ensures only traffic from specific VPC endpoints can access the bucket, enhancing security.
124.
A developer needs to reduce Lambda execution cost. What is BEST?
A. Increase timeout
B. Optimize memory allocation
C. Use EC2
D. Use S3
Answer: B
Rationale: Lambda pricing depends on memory and execution time. Optimizing memory can reduce execution duration, lowering total cost.
125.
A developer wants to limit API requests per second. What is BEST?
A. IAM
B. API Gateway throttling
C. S3
D. EC2
Answer: B
Rationale: API Gateway throttling protects backend services by limiting request rates and preventing overload.
126.
A developer needs to filter events before invoking Lambda. What is BEST?
A. EC2
B. EventBridge rules
C. S3
D. RDS
Answer: B
Rationale: EventBridge rules allow filtering events based on patterns before invoking Lambda, reducing unnecessary executions.
127.
A developer wants to prevent duplicate Kinesis records. What is BEST?
A. Ignore duplicates
B. Idempotent processing
C. EC2
D. S3
Answer: B
Rationale: Kinesis provides at-least-once delivery, so idempotent processing ensures duplicates do not cause incorrect results.
128.
A developer needs to secure API endpoints with OAuth. What is BEST?
A. IAM
B. Cognito user pools
C. S3
D. EC2
Answer: B
Rationale: Cognito user pools provide OAuth-based authentication for APIs.
129.
A developer wants canary deployments. What is BEST?
A. Manual
B. Lambda aliases with weighted traffic
C. EC2
D. S3
Answer: B
Rationale: Lambda aliases support weighted traffic shifting, enabling gradual rollouts and minimizing risk.
130.
A developer wants to handle high-throughput streaming data. What is BEST?
A. SNS
B. Kinesis
C. Lambda
D. EC2
Answer: B
Rationale: Kinesis handles high-throughput streaming data ingestion and processing.
131.
A developer wants to ensure least privilege access. What is BEST?
A. Full access
B. IAM policies with minimal permissions
C. S3
D. EC2
Answer: B
Rationale: Least privilege reduces security risks by granting only necessary permissions.
132.
A developer needs to debug API errors. What is BEST?
A. CloudTrail
B. CloudWatch logs
C. Config
D. S3
Answer: B
Rationale: CloudWatch logs capture API execution details, enabling troubleshooting.
133.
A developer wants secure temporary credentials. What is BEST?
A. Hardcode
B. STS
C. S3
D. EC2
Answer: B
Rationale: STS provides temporary credentials for secure access.
134.
A developer wants event-driven architecture. What is BEST?
A. EventBridge
B. EC2
C. RDS
D. S3
Answer: A
Rationale: EventBridge enables event-driven workflows.
135.
A developer wants message fan-out. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: A
Rationale: SNS distributes messages to multiple subscribers.
136.
A developer wants reliable messaging. What is BEST?
A. SNS
B. SQS
C. Lambda
D. EC2
Answer: B
Rationale: SQS ensures message durability and delivery.
137.
A developer wants centralized logging. What is BEST?
A. CloudWatch Logs
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: CloudWatch Logs centralizes logs.
138.
A developer wants monitoring alerts. What is BEST?
A. CloudWatch alarms
B. CloudTrail
C. Config
D. Lambda
Answer: A
Rationale: Alarms notify issues.
139.
A developer wants CI/CD pipeline. What is BEST?
A. CodePipeline
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodePipeline automates CI/CD.
140.
A developer wants build automation. What is BEST?
A. CodeBuild
B. EC2
C. S3
D. RDS
Answer: A
Rationale: CodeBuild compiles code.
141.
A developer wants workflow orchestration. What is BEST?
A. Step Functions
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Step Functions orchestrate workflows.
142.
A developer needs scalable DB. What is BEST?
A. DynamoDB
B. RDS
C. EC2
D. S3
Answer: A
Rationale: DynamoDB scales automatically.
143.
A developer needs relational DB. What is BEST?
A. RDS
B. DynamoDB
C. Redshift
D. S3
Answer: A
Rationale: RDS provides relational database.
144.
A developer wants caching. What is BEST?
A. ElastiCache
B. RDS
C. DynamoDB
D. S3
Answer: A
Rationale: ElastiCache improves performance.
145.
A developer wants encryption. What is BEST?
A. IAM
B. KMS
C. CloudWatch
D. Lambda
Answer: B
Rationale: KMS manages encryption keys.
146.
A developer wants container orchestration. What is BEST?
A. ECS
B. EC2
C. S3
D. RDS
Answer: A
Rationale: ECS manages containers.
147.
A developer wants serverless containers. What is BEST?
A. ECS
B. Fargate
C. EC2
D. Lambda
Answer: B
Rationale: Fargate removes server management.
148.
A developer wants API security. What is BEST?
A. IAM
B. API Gateway authorizer
C. S3
D. EC2
Answer: B
Rationale: Authorizers secure APIs.
149.
A developer wants secure uploads. What is BEST?
A. Public S3
B. Pre-signed URLs
C. EC2
D. RDS
Answer: B
Rationale: Pre-signed URLs allow secure uploads.
150.
A developer wants serverless backend. What is BEST?
A. Lambda + API Gateway
B. EC2
C. S3
D. RDS
Answer: A
Rationale: Serverless backend reduces operational overhead and scales automatically.
Frequently Asked Questions
Is this AWS Certified Developer – Associate DVA-C02 practice test similar to the real exam?
Yes, this practice test is designed to reflect real exam patterns, structure, and difficulty level to help you prepare effectively.
What is the best way to use this AWS Certified Developer – Associate DVA-C02 test for preparation?
Take the test in a timed setting, review your answers carefully, and focus on improving weak areas after each attempt.
Can I retake this AWS Certified Developer – Associate DVA-C02 practice test multiple times?
Yes, repeating the test helps reinforce concepts, improve accuracy, and build confidence for the actual exam.
Who should use this AWS Certified Developer – Associate DVA-C02 practice test?
This practice test is suitable for both beginners and retakers who want to improve their understanding and performance.