AWS DVA C02 AWS Certified Developer Associate Dumps 2025
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Here are 10 multiple-choice review questions with explanations for the AWS Certified Developer - Associate (DVA-C02) exam:
1. Which AWS service allows you to run code without provisioning or managing servers?
A. AWS Lambda
B. Amazon EC2
C. AWS Elastic Beanstalk
D. AWS Fargate✅ Answer: A
Explanation: AWS Lambda is a serverless compute service that runs code in response to events without requiring server management. EC2 (B) requires managing instances, Elastic Beanstalk (C) is a PaaS service, and Fargate (D) is serverless but for containers.
2. What is the primary purpose of Amazon API Gateway?
A. To store and retrieve large amounts of data
B. To create, publish, and manage RESTful and WebSocket APIs
C. To deploy containerized applications
D. To manage EC2 instances✅ Answer: B
Explanation: API Gateway is used to create, publish, and manage APIs. It integrates with services like Lambda and DynamoDB but is not a storage (A), container (C), or compute (D) service.
3. Which DynamoDB feature ensures low-latency read performance by maintaining a copy of a table in a different region?
A. DynamoDB Streams
B. Global Tables
C. DAX (DynamoDB Accelerator)
D. Auto Scaling✅ Answer: B
Explanation: Global Tables provide multi-region replication for low-latency access. DynamoDB Streams (A) captures changes, DAX (C) is an in-memory cache, and Auto Scaling (D) adjusts capacity.
4. How does AWS Lambda scale in response to incoming requests?
A. Manually adjusting instance size
B. Automatically scaling based on the number of concurrent executions
C. Using an Auto Scaling group
D. Requiring a fixed number of pre-provisioned instances✅ Answer: B
Explanation: Lambda automatically scales by spinning up additional instances of the function as requests increase, with no manual intervention needed (A, C, D are incorrect).
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5. What is the maximum timeout for an AWS Lambda function execution?
A. 1 minute
B. 5 minutes
C. 15 minutes
D. 1 hour✅ Answer: C
Explanation: Lambda functions can run for up to 15 minutes (900 seconds). Longer-running tasks require Step Functions, ECS, or EC2.
6. Which AWS service is best for real-time processing of streaming data?
A. Amazon Kinesis
B. Amazon SQS
C. Amazon SNS
D. Amazon EMR✅ Answer: A
Explanation: Kinesis is designed for real-time streaming data. SQS (B) is for message queuing, SNS (C) for pub/sub notifications, and EMR (D) for big data processing.
7. What does Amazon S3 "eventual consistency" mean for read-after-write operations?
A. Immediate consistency across all regions
B. Updates may take time to propagate, so recent writes may not be immediately visible
C. Strong consistency for all GET requests
D. Only consistent for PUTs of new objects✅ Answer: B
Explanation: S3 offers eventual consistency for overwrite PUTs and DELETEs, meaning changes may not be instantly visible. (Note: S3 now provides strong consistency for most operations, but exam may reference older behavior.)
8. Which IAM policy type grants permissions to an AWS service to assume a role?
A. Identity-based policy
B. Resource-based policy
C. Trust policy
D. Permission boundary✅ Answer: C
Explanation: A trust policy defines which entities (e.g., Lambda, EC2) can assume an IAM role. Identity-based (A) and resource-based (B) policies grant permissions, while permission boundaries (D) limit max permissions.
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9. What is the purpose of Amazon CloudWatch Logs?
A. To store encrypted secrets
B. To monitor and store application and system logs
C. To trigger Lambda functions directly
D. To replace AWS Config✅ Answer: B
Explanation: CloudWatch Logs collects and stores logs from AWS services and applications. Secrets are managed by Secrets Manager (A), Lambda triggers use EventBridge or S3 (C), and AWS Config (D) tracks resource configurations.
10. Which service enables cross-account access to S3 buckets without IAM roles?
A. AWS Organizations
B. S3 Bucket Policies
C. AWS STS
D. Amazon Cognito✅ Answer: B
Explanation: S3 Bucket Policies can grant cross-account access directly. Organizations (A) manages multiple accounts, STS (C) provides temporary credentials, and Cognito (D) handles user authentication.
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Final Tips for AWS DVA C02 AWS Certified Developer Associate Dumps:
- Focus on Lambda, DynamoDB, API Gateway, S3, IAM, and serverless patterns.
- Understand event-driven architectures (SQS, SNS, Kinesis).
- Practice AWS CLI and SDK integrations.
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