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Questions address migrating database credentials securely with automated rotation, implementing near real-time comment feedback using event-driven architectures, and connecting sign-in events to custom analytics using Cognito and API Gateway/Lambda triggers. Additional items evaluate REST API access control across AWS accounts, selecting correct API Gateway authorization and IAM/Cognito patterns, granting Lambda least-privilege permissions via execution roles, and replicating encrypted Aurora databases between regions using KMS-aware snapshot copy and restore.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/aws-certified-developer-associate-dva-c01-sample-exam-questions-v20-final/317548/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/aws-certified-developer-associate-dva-c01-sample-exam-questions-v20-final/317548.png","ImageObject",300,407,{"name":92,"@type":93},"Nguyễn Văn Học","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-20",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How should database credentials be stored and rotated during a migration to Amazon RDS for MySQL?","Question",{"text":112,"@type":113},"Use AWS Secrets Manager and configure automatic rotation for the database credentials, rather than embedding credentials in AMIs or relying on relaunching instances.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which architectures support posting comments and receiving near real-time feedback?",{"text":117,"@type":113},"A WebSocket API in API Gateway using Lambda and DynamoDB, or an AWS AppSync GraphQL setup with DynamoDB can meet near real-time requirements.",{"name":119,"@type":110,"acceptedAnswer":120},"What permissions are required for a Lambda function that reads files from S3 and writes to CloudWatch Logs?",{"text":121,"@type":113},"Create a Lambda execution role in AWS IAM, attach the required IAM policy to the role, and assign the execution role to the Lambda function.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},317548,1790557859,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":24,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144,"preview_page_count":4},1374402739827,"https://ap-avatar.wpscdn.com/avatar/14000c97e7351f1a627?x-image-process=image/resize,m_fixed,w_180,h_180&k=1787885694763230660","AWS Certified Developer – Associate (DVA-C01)  \nSample Exam Questions  \n1) A company is migrating a legacy application to Amazon EC2 . The application uses a user name and password stored in the source code to connect to a MySQL database. The database will be migrated to an Amazon RDS for MySQL DB instance. As part of the migration, the company wants to implement a secure way to store and automatically rotate the database credentials.  \nWhich approach meets these requirements?  \nA) Store the database credentials in environment variables in an Amazon Machine Image (AMI) . Rotate the credentials by replacing the AMI.  \nB) Store the database credentials in AWS Systems Manager Parameter Store. Configure Parameter Store to automatically rotate the credentials.  \nC) Store the database credentials in environment variables on the EC2 instances. Rotate the credentials by relaunching the EC2 instances.  \nD) Store the database credentials in AWS Secrets Manager. Configure Secrets Manager to automatically rotate the credentials.  \n2) A Developer is designing a web application that allows the users to post comments and receive nearreal-time feedback.  \nWhich architectures meet these requirements? (Select TWO.)  \nA) Create an AWS AppSync schema and corresponding APIs. Use an Amazon DynamoDB table as the data store.  \nB) Create a WebSocket API in Amazon API Gateway. Use an AWS Lambda function as the backend and an Amazon DynamoDB table as the data store.  \nC) Create an AWS Elastic Beanstalk application backed by an Amazon RDS database. Configure the application to allow long-lived TCP/IP sockets.  \nD) Create a GraphQL endpoint in Amazon API Gateway. Use an Amazon DynamoDB table as the data store.  \nE) Enable WebSocket on Amazon CloudFront. Use an AWS Lambda function as the origin and an Amazon Aurora DB cluster as the data store.  \n3) A Developer is adding sign-up and sign-in functionality to an application. The application is required to make an API call to a custom analytics solution to log user sign-in events.  \nWhich combination of actions should the Developer take to satisfy these requirements? (Select TWO.)  \nA) Use Amazon Cognito to provide the sign-up and sign-in functionality.  \nB) Use AWS IAM to provide the sign-up and sign-in functionality.  \nC) Configure an AWS Config rule to make the API call triggered by the post-authentication event.  \nD) Invoke an Amazon API Gateway method to make the API call triggered by the post-authentication event.  \nE) Execute an AWS Lambda function to make the API call triggered by the post-authentication event.  \n© 2019, Amazon Web Services, Inc. or its affiliates. All rights [reserved | aws.amazon.com](reserved | aws.amazon.com) 1  \nAWS Certified Developer – Associate (DVA-C01)  \nSample Exam Questions  \n4) A company is using Amazon API Gateway for its REST APIs in an AWS account. The Security team wants to allow only IAM users from another AWS account to access the APIs.  \nWhich combination of actions should the Security team take to satisfy these requirements? (Select TWO.)  \nA) Create an IAM permission policy and attach it to each IAM user. Set the APIs method authorization type to AWS_IAM. Use Signature Version 4 to sign the API requests.  \nB) Create an Amazon Cognito user pool and add each IAM user to the pool. Set the method authorization  \ntype for the APIs to COGNITO_USER_POOLS. Authenticate using the IAM credentials in Amazon Cognito and add the ID token to the request headers.  \nC) Create an Amazon Cognito identity pool and add each IAM user to the pool. Set the method authorization type for the APIs to COGNITO_USER_POOLS. Authenticate using the IAM credentials in Amazon Cognito and add the access token to the request headers.  \nD) Create a resource policy for the APIs that allows access for each IAM user only.  \nE) Create an Amazon Cognito authorizer for the APIs that allows access for each IAM user only. Set the method authorization type for the APIs to COGNITO_USER_POOLS.  \n5) A Developer","cbCaigfB58CzWXeA","https://ap.wps.com/l/cbCaigfB58CzWXeA","pdf",302369,"English","# Sample Exam Questions\n## Question 1 - Secure credential storage and rotation\n## Question 2 - Near real-time comment feedback architectures\n## Question 3 - Sign-up/sign-in and logging sign-in events\n## Question 4 - Cross-account IAM access control for API Gateway\n## Question 5 - Lambda permissions for S3-triggered conversion\n## Question 6 - Copying an encrypted Aurora database across regions","[{\"question\":\"How should database credentials be stored and rotated during a migration to Amazon RDS for MySQL?\",\"answer\":\"Use AWS Secrets Manager and configure automatic rotation for the database credentials, rather than embedding credentials in AMIs or relying on relaunching instances.\"},{\"question\":\"Which architectures support posting comments and receiving near real-time feedback?\",\"answer\":\"A WebSocket API in API Gateway using Lambda and DynamoDB, or an AWS AppSync GraphQL setup with DynamoDB can meet near real-time requirements.\"},{\"question\":\"What permissions are required for a Lambda function that reads files from S3 and writes to CloudWatch Logs?\",\"answer\":\"Create a Lambda execution role in AWS IAM, attach the required IAM policy to the role, and assign the execution role to the Lambda function.\"}]","AWS Certified Developer - Associate (DVA-C01) - Sample Exam Questions - v2.0 FINAL | PDF",1789935558,13]