A company needs to ingest terabytes of data each hour from thousands of sources that are delivered almost continually throughout the day. The volume of messages generated varies over the course of the day.
Messages must be delivered in real time for fraud detection and live operational dashboards.
Which approach will meet these requirements?

A. Send the messages to an Amazon SQS queue, then process the messages by using a fleet of Amazon EC2 instances
B. Use the Amazon S3 API to write messages to an S3 bucket, then process the messages by using Amazon Redshift
C. Use AWS Data Pipeline to automate the movement and transformation of data
D. Use Amazon Kinesis Data Streams with Kinesis Client Library to ingest and deliver messages

A Developer must build an application that uses Amazon DynamoDB. The requirements state that the 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

A front-end web application is using Amazon Cognito user pools to handle the user authentication flow. A developer is integrating Amazon DynamoDB into the application using the AWS SDK for JavaScript.
How would the developer securely call the API without exposing the access or secret keys?

A. Configure Amazon Cognito identity pools and exchange the JSON Web Token (JWT) for temporary credentials.
B. Run the web application in an Amazon EC2 instance with the instance profile configured.
C. Hardcore the credentials, use Amazon S3 to host the web application, and enable server-side encryption.
D. Use Amazon Cognito user pool JSON Web Tokens (JWITs) to access the DynamoDB APIs.

A developer is storing JSON files in an Amazon S3 bucket. The developer wants to securely share an object with a specific group of people.
How can the developer securely provide temporary access to the objects that are stored in the S3 bucket?

A. Set object retention on the files. Use the AWS software development kit (SDK) to restore the object before subsequent requests. Provide the bucket's S3 URL.
B. Use the AWS software development kit (SDK) to generate a presigned URL. Provide the presigned URL.
C. Set a bucket policy that restricts access after a period of time. Provide the bucket's S3 URL.
D. Configure static web hosting on the S3 bucket. Provide the bucket's web URL.

A company runs an e-commerce website that uses Amazon DynamoDB where pricing for items is dynamically updated in real time. At any given time, multiple updates may occur simultaneously for pricing information on a particular product. This is causing the original editor's changes to be overwritten without a proper review process.
Which DynamoDB write option should be selected to prevent this overwriting?

A. Concurrent writes
B. Conditional writes
C. Atomic writes
D. Batch writes

A Developer is working on a serverless project based in Java. Initial testing shows a cold start takes about 8 seconds on average for AWS Lambda functions.
What should the Developer do to reduce the cold start time? (Choose two.)

A. Add the Spring Framework to the project and enable dependency injection.
B. Reduce the deployment package by including only needed modules from the AWS SDK for Java.
C. Increase the memory allocation setting for the Lambda function.
D. Increase the timeout setting for the Lambda function.
E. Change the Lambda invocation mode from synchronous to asynchronous.

A company is building a compute-intensive application that will run on a fleet of Amazon EC2 instances. The application uses attached Amazon EBS disks for storing data. The application will process sensitive information and all the data must be encrypted.
What should a Developer do to ensure the data is encrypted on disk without impacting performance?

A. Configure the Amazon EC2 instance fleet to use encrypted EBS volumes for storing data.
B. Add logic to write all data to an encrypted Amazon S3 bucket.
C. Add a custom encryption algorithm to the application that will encrypt and decrypt all data.
D. Create a new Amazon Machine Image (AMI) with an encrypted root volume and store the data to ephemeral disks.

A Developer must analyze performance issues with production-distributed applications written as AWS Lambda functions. These distributed Lambda applications invoke other components that make up the applications.
How should the Developer identify and troubleshoot the root cause of the performance issues in production?

A. Add logging statements to the Lambda functions, then use Amazon CloudWatch to view the logs.
B. Use AWS CloudTrail and then examine the logs.
C. Use AWS X-Ray, then examine the segments and errors.
D. Run Amazon Inspector agents and then analyze performance.

A developer tested an application locally and then deployed it to AWS Lambda. While testing the application remotely, the Lambda function fails with an access denied message.
How can this issue be addressed?

A. Update the Lambda function's execution role to include the missing permissions.
B. Update the Lambda function's resource policy to include the missing permissions.
C. Include an IAM policy document at the root of the deployment package and redeploy the Lambda function.
D. Redeploy the Lambda function using an account with access to the AdministratorAccess policy.

An application needs to use the IP address of the client in its processing. The application has been moved into AWS and has been placed behind an Application Load Balancer (ALB). However, all the client IP addresses now appear to be the same. The application must maintain the ability to scale horizontally.
Based on this scenario, what is the MOST cost-effective solution to this problem?

A. Remove the application from the ALB. Delete the ALB and change Amazon Route 53 to direct traffic to the instance running the application.
B. Remove the application from the ALB. Create a Classic Load Balancer in its place. Direct traffic to the application using the HTTP protocol.
C. Alter the application code to inspect the X-Forwarded-For header. Ensure that the code can work properly if a list of IP addresses is passed in the header.
D. Alter the application code to inspect a custom header. Alter the client code to pass the IP address in the custom header.