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Amazon AWS Certified Developer - Associate Sample Questions (Q26-Q31):

NEW QUESTION # 26
A developer is using AWS Amplify Hosting to build and deploy an application. The developer is receiving an increased number of bug reports from users. The developer wants to add end-to-end testing to the application to eliminate as many bugs as possible before the bugs reach production.
Which solution should the developer implement to meet these requirements?

• A. Add a test phase to the amplify.yml build settings for the application.
• B. Add a test phase to the aws-exports.js file for the application.
• C. Run the amplify add test command in the Amplify CLI.
• D. Create unit tests in the application. Deploy the unit tests by using the amplify push command in the Amplify CLI.

Answer: A
NEW QUESTION # 27
A developer is using an AWS Lambda function to generate avatars for profile pictures that are uploaded to an Amazon S3 bucket. The Lambda function is automatically invoked for profile pictures that are saved under the /original/ S3 prefix. The developer notices that some pictures cause the Lambda function to time out. The developer wants to implement a fallback mechanism by using another Lambda function that resizes the profile picture.
Which solution will meet these requirements with the LEAST development effort?

• A. Set the image resize Lambda function as a destination of the avatar generator Lambda function for the events that fail processing.
• B. Create an Amazon Simple Notification Service (Amazon SNS) topic. Set the SNS topic as a destination with an on failure condition for the avatar generator Lambda function. Subscribe the image resize Lambda function to the SNS topic.
• C. Create an AWS Step Functions state machine that invokes the avatar generator Lambda function and uses the image resize Lambda function as a fallback. Create an Amazon EventBridge rule that matches events from the S3 bucket to invoke the state machine.
• D. Create an Amazon Simple Queue Service (Amazon SQS) queue. Set the SQS queue as a destination with an on failure condition for the avatar generator Lambda function. Configure the image resize Lambda function to poll from the SQS queue.

Answer: C
NEW QUESTION # 28
A developer wants to insert a record into an Amazon DynamoDB table as soon as a new file is added to an Amazon S3 bucket.
Which set of steps would be necessary to achieve this?

• A. Create a cron job that will run at a scheduled time and insert the records into DynamoDB.
• B. Create an event with Amazon EventBridge that will monitor the S3 bucket and then insert the records into DynamoDB.
• C. Create an AWS Lambda function that will poll the S3 bucket and then insert the records into DynamoDB.
• D. Configure an S3 event to invoke an AWS Lambda function that inserts records into DynamoDB.

Answer: D
NEW QUESTION # 29
A company is migrating an on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads. The company wants to refactor the code to achieve optimum read performance for queries.
Which solution will meet this requirement with LEAST current and future effort?

• A. Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.
• B. Use open source replication software to create a copy of the MySQL database on an Amazon EC2 instance. Modify the application code so that queries use the IP address of the EC2 instance.
• C. Use a multi-AZ Amazon RDS deployment. Increase the number of connections that the code makes to the database or increase the connection pool size if a connection pool is in use.
• D. Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.

Answer: D
NEW QUESTION # 30
A company has deployed an application on AWS Elastic Beanstalk. The company has configured the Auto Scaling group that is associated with the Elastic Beanstalk environment to have five Amazon EC2 instances. If the capacity is fewer than four EC2 instances during the deployment, application performance degrades. The company is using the all-at-once deployment policy.
What is the MOST cost-effective way to solve the deployment issue?

• A. Change the deployment policy to rolling. Specify a batch size of 2.
• B. Change the deployment policy to traffic splitting. Specify an evaluation time of 1 hour.
• C. Change the deployment policy to rolling with additional batch. Specify a batch size of 1.
• D. Change the Auto Scaling group to six desired instances.

Answer: C
NEW QUESTION # 31
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