Vendor: Amazon
Exam Code: DVA-C01
Exam Name: AWS Certified Developer - Associate (DVA-C01)
Certification: Amazon Certifications
Total Questions: 613 Q&A
Updated on: Oct 01, 2025
Exam retired ,new exam code replace: DVA-C02
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A company has an application that uses Amazon Cognito user pools as an identity provider. The company must secure access to user records. The company I up multi-factor authentication (MFA). The company also wants to send a login activity notification by email every time a user logs in.
What is the MOST operationally efficient solution that meets this requirement?
A. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Add an Amazon API Gateway to invoke the function. Call the API from the client side when login confirmation is received.
B. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Add an Amazon Cognito post authentication Lambda trigger for the function.
C. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Create an Amazon CloudWatch Logs log subscription filter to invoke the function based on the login status.
D. Configure Amazon Cognito to stream all logs to Amazon Kinesis Data Firehose. Create an AWS Lambda function to process the streamed logs and it send the email notification based on the login status of each user.
An existing serverless application processes uploaded image files. The process currently uses a single Lambda function that takes an image file, performs the processing, and stores the file in Amazon S3. Users of the application now require thumbnail generation of the images. Users want to avoid any impact to the time it takes to perform the image uploads.
How can thumbnail generation be added to the application, meeting user requirements while minimizing changes to existing code?
A. Change the existing Lambda function handling the uploads to create thumbnails at the time of upload.Have the function store both the image and thumbnail in Amazon S3.
B. Create a second Lambda function that handles thumbnail generation and storage. Change the existing Lambda function to invoke it asynchronously.
C. Create an S3 event notification with a Lambda function destination. Create a new Lambda function to generate and store thumbnails.
D. Create an S3 event notification to an SQS Queue. Create a scheduled Lambda function that processes the queue, and generates and stores thumbnails.
A Developer must build an application that uses Amazon DynamoDB. The requirements state that items being stored in the DynamoDB table will be 7KB in size and that reads must be strongly consistent. The maximum read rate is 3 items per second, and the maximum write rate is 10 items per second.
How should the Developer size the DynamoDB table to meet these requirements?
A. Read: 3 read capacity units Write: 70 write capacity units
B. Read: 6 read capacity units Write: 70 write capacity units
C. Read: 6 read capacity units Write: 10 write capacity units
D. Read: 3 read capacity units Write: 10 write capacity units
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