A Developer accesses AWS CodeCommit over SSH. The SSH keys configured to access AWS CodeCommit are tied to a user with the following permissions:

The Developer needs to create/delete branches.
Which specific IAM permissions need to be added, based on the principle of least privilege?

• A."codecommit:CreateBranch""codecommit:DeleteBranch"
• B."codecommit:Put*"
• C."codecommit:Update*"
• D."codecommit:*"

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A company experienced partial downtime during the last deployment of a new application AWS Elastic Beanstalk split the environment's Amazon EC2 instances into batches and deployed a new version one batch at a time after taking them out of service. Therefore, full capacity was not maintained during deployment.
The developer plans to release a new version of the application, and is looking for a policy that will maintain full capacity and minimize the impact of the failed deployment Which deployment policy should the developer use?

• A.Rolling with an Additional Batch
• B.All at Once
• C.Rolling
• D.Immutable

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A company is developing a serverless ecommerce web application The application needs to make coordinated, all-or-nothing changes to multiple items in the company's inventory table in Amazon DynamoDB.
Which solution will meet these requirements?

• A.Enable transactions for the DynamoDB table Use the BatchWriteltem operation to update the items.
• B.Use the TransactWriteitem operation to group the changes Update the items in the table
• C.Set up a FIFO queue using Amazon SQS. Group the changes in the queue. Update the table based on the grouped changes
• D.Create a transaction table in an Amazon Aurora DB cluster to manage the transactions Write a backend process to sync the Aurora DB table and the DynamoDB table

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An application is using single -node Amazon ElastiCache for Redis instance to improve read performance. Over time, demand for the application has increased exponentially, which has increased the load on the ElastiCache instance. It is critical that this cache layer handles the load and is resilient in case of node failures.
What can the Developer do to address the load and resiliency requirements?

• A.Add a read replica instance.
• B.Migrate to a Memcached cluster.
• C.Migrate to an Amazon ElastiCache service cluster.
• D.Vertically scale the ElastiCache instance.

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A company maintains an application responsible for processing several thousand external callbacks each day. The company's System administrators want to know how many callbacks are being received on a rolling basis, and they want this data available for 10 days. The company also wants the ability to issue automated alerts if the number of callbacks exceeds the defined thresholds.
What is the MOST cost-effective way to address the need to track and alert on these statistics?

• A.Push callback data to AWS X-Ray and use AWS Lambda to query, display, and alert on exceeded thresholds.
• B.Push callback data to Amazon Kinesis Data Streams and invoke an AWS Lambda function that stores data in Amazon DynamoDB and sends the required alerts.
• C.Push callback data to Amazon CloudWatch as a custom metric and use the CloudWatch alerting mechanisms to alert System Administrators.
• D.Push callback data to an Amazon RDS database that can be queried to show historical data and to alert on exceeded thresholds.

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