A Developer has created an S3 bucket s3://mycoolapp and has enabled server across logging that points to the folder s3://mycoolapp/logs. The Developer moved 100 KB of Cascading Style Sheets (CSS) documents to the folder s3://mycoolapp/css, and then stopped work. When the developer came back a few days later, the bucket was 50 GB.
What is the MOST likely cause of this situation?

• A.The CSS files were not compressed and S3 versioning was enabled.
• B.S3 replication was enabled on the bucket.
• C.Logging into the same bucket caused exponential log growth.
• D.An S3 lifecycle policy has moved the entire CSS file to S3 Infrequent Access.

Correct Answer: C

Explanation
Refer AWS documentation - S3 Server logs
To turn on log delivery, you provide the following logging configuration information:

The name of the target bucket where you want Amazon S3 to save the access logs as objects. You can have logs delivered to any bucket that you own that is in the same Region as the source bucket, including the source bucket itself.We recommend that you save access logs in a different bucket so that you can easily manage the logs. If you choose to save access logs in the source bucket, we recommend that you specify a prefix for all log object keys so that the object names begin with a common string and the log objects are easier to identify.When your source bucket and target bucket are the same bucket, additional logs are created for the logs that are written to the bucket. This behavior might not be ideal for your use case because it could result in a small increase in your storage billing. In addition, the extra logs about logs might make it harder to find the log that you re looking for.

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A Developer uses AWS CodeDeploy to automate application deployment that connects to an external MySQL database. The Developer wants to securely access the encrypted secrets, such as API keys and database passwords.
Which of the following solutions would involve the LEAST administrative effort?

• A.Use AWS SSM Parameter Store to store the secrets and to programmatically access them by using the IAM role from EC2 instances.
• B.Use the instance metadata to store the secrets and to programmatically access the secrets from EC2 instances.
• C.Use the Amazon DynamoDB client-side encryption library to save the secrets in DynamoDB and to programmatically access the secrets from EC2 instances.
• D.Save the secrets in Amazon S3 with AWS KMS server-side encryption, and use a signed URL to access them by using the IAM role from Amazon EC2 instances.

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A developer is using Amazon DynamoDB to store application data . The developer wants to further improve application performance by reducing response limes for read and write operations.
Which DynamoDB feature should be used to meet these requirement?

• A.Amazon DynamoDB Streams
• B.Amazon DynamoDB Accelerator
• C.Amazon DynamoDB global tables
• D.Amazon DynamoDB transactions

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An AWS Lambda function accesses two Amazon DynamoDB tables. A developer wants to improve the performance of the Lambda function by identifying bottlenecks in the function. How can the developer inspect the timing of the DynamoDB API calls?

• A.Limit Lambda to no more than five concurrent invocations Monitor from the Lambda console
• B.Add DynamoDB as an event source to the Lambda function. View the performance with Amazon CloudWatch metrics
• C.Enable AWS X-Ray tracing for the function. View the traces from the X-Ray service.
• D.Place an Application Load Balancer (ALB) in front of the two DynamoDB tables. Inspect the ALB logs

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A Developer is building a mobile application and needs any update to user profile data to be pushed to all devices accessing the specific identity. The Developer does not want to manage a back end to maintain the user profile data.
What is the MOST efficient way for the Developer to achieve these requirements using Amazon Cognito?

• A.Use Cognito federated identities.
• B.Use a Cognito user pool.
• C.Use Cognito Sync.
• D.Use Cognito events.

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