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NEW QUESTION 24
A developer is testing a Docker-based application that uses the AWS SDK to interact with Amazon DynamoDB In the local development environment, the application has used IAM access keys The application is now ready for deployment onto an ECS duster.
How should the application authenticate with AWS services in production?

• A. Configure an ECS task IAM role for the application to use
• B. Configure AWS access key/secret access key environment variables with new credentials
• C. Refactor the application to call AWS STS AssumeRole based on an instance role
• D. Configure the credentials file with a new access key/secret access key

Answer: A

NEW QUESTION 25
A Developer is building a three-tier web application that should be able to handle a minimum of 5000 requests per minute. Requirements state that the web tier should be completely stateless while the application maintains session state for the users.
How can session data be externalized, keeping latency at the LOWEST possible value?

• A. Create an Amazon DynamoDB table, then implement session handling at the application level to leverage the table for session data storage
• B. Create an Amazon RDS instance, then implement session handling at the application level to leverage a database inside the RDS database instance for session data storage
• C. Create an Amazon ElastiCache Memcached cluster, then implement session handling at the application level to leverage the cluster for session data storage
• D. Implement a shared file system solution across the underlying Amazon EC2 instances, then implement session handling at the application level to leverage the shared file system for session data storage

Answer: B

Explanation:
https://aws.amazon.com/caching/session-management/

NEW QUESTION 26
A Developer has been asked to create an AWS Lambda function that is triggered any time updates are made to items in an Amazon DynamoDB table. The function has been created, and appropriate permissions have been added to the Lambda execution role. Amazon DynamoDB streams have been enabled for the table, but the function is still not being triggered.
Which option would enable DynamoDB table updates to trigger the Lambda function?

• A. Map an Amazon SNS topic to the DynamoDB streams
• B. increase the maximum execution time (timeout) setting of the Lambda function
• C. Change the StreamViewType parameter value to NEW_AND_OLD_IMAGES for the DynamoDB table
• D. Configure event source mapping for the Lambda function

Answer: D

Explanation:
https://docs.aws.amazon.com/en_us/amazondynamodb/latest/developerguide/Streams.Lambda.Tutorial.html
Create an event source mapping to tell Lambda to send records from your stream to a Lambda function. You can create multiple event source mappings to process the same data with multiple Lambda functions, or process items from multiple streams with a single function.

NEW QUESTION 27
A developer has designed a customer, facing application that is running on an Amazon EC2 instance. The application logs every request made to it. The application usually runs seamlessly, but a spike in traffic generates several logs that cause the disk to fill up and eventually run out of memory Company policy requires old to be centralized for analysis.
Which long-term solution should the developer employ to prevent the issue from reoccurring?

• A. Create an Amazon EventBridge (Amazon CloudWatch Events) rule to pull the logs from the instance. Configure the rule to delete the logs they have been pulled.
• B. Install the Amazon CloudWatch agent on the instance to send the logs to CloudWatch. Delete the logs from the instance once they are sent to CloudWatch.
• C. Enable AWS Auto Scaling on Amazon Elastic Block Store (Amazon EBS) to automatically add volumes to the instance when it reaches a specified threshold.
• D. Enable AWS Auto Scaling on Amazon Elastic Block Store (Amazon EBS) a outomatically add volume to the instance when it reaches a specified threshold.

Answer: A

NEW QUESTION 28
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