A company runs a high performance computing (HPC) data-processing application on Amazon EC2 instances in one Availability Zone within a development environment. The application uses a dataset that the company stores on an Amazon S3 general purpose
bucket in the same AWS Region as the EC2 instances.
A SysOps administrator must improve the application's performance for retrieval of objects from Amazon S3.
Which solution will meet these requirements?

1. A. Enable S3 Transfer Acceleration for the S3 bucke
2. B. Create an S3 access point for the bucke
3. C. Update the application to use the access point.
4. D. Create an S3 Lifecycle configuration for the S3 bucket to move all objects to the S3 Express One Zone storage clas
5. E. Update the application to use an S3 Regional endpoint.
6. F. Create a second general purpose S3 bucket in the same Regio
7. G. Copy the objects from the original bucket to the new bucke
8. H. Use the S3 Express One Zone storage class to store the objects in the new bucke
9. I. Update the application to use an S3 Regional endpoint.
10. J. Create an S3 directory bucket in the same Availability Zon
11. K. Import objects from the original bucket to the new bucke
12. L. Use the S3 Express One Zone storage class to store the objects in the new bucke
13. M. Update the application to use an S3 Zonal endpoint.

Correct Answer: D

A CloudOps engineer is troubleshooting an AWS CloudFormation stack creation that failed. Before the CloudOps engineer can identify the problem, the stack and its resources are deleted. For future deployments, the CloudOps engineer must preserve any resources that CloudFormation successfully created.
What should the CloudOps engineer do to meet this requirement?

1. A. Set the value of the DisableRollback parameter to False during stack creation.
2. B. Set the value of the OnFailure parameter to DO_NOTHING during stack creation.
3. C. Specify a rollback configuration that has a rollback trigger of DO_NOTHING during stack creation.
4. D. Set the value of the OnFailure parameter to ROLLBACK during stack creation.

Correct Answer: B

A company uses Amazon ElastiCache (Redis OSS) to cache application data. A CloudOps engineer must implement a solution to increase the resilience of the cache. The solution also must minimize the recovery time objective (RTO).
Which solution will meet these requirements?

1. A. Replace ElastiCache (Redis OSS) with ElastiCache (Memcached).
2. B. Create an Amazon EventBridge rule to initiate a backup every hou
3. C. Restore the backup when necessary.
4. D. Create a read replica in a second Availability Zon
5. E. Enable Multi-AZ for the ElastiCache (Redis OSS) replication group.
6. F. Enable automatic backup
7. G. Restore the backups when necessary.

Correct Answer: C

A company hosts a static website in Amazon S3 behind an Amazon CloudFront distribution. When new versions are deployed, users sometimes do not see updated content immediately.
Which solution will meet this requirement?

1. A. Configure the CloudFront distribution to add a custom Cache-Control header to requests for content from the S3 bucket.
2. B. Modify the distribution settings to specify the protocol as HTTPS only.
3. C. Attach the CachingOptimized managed cache policy to the distribution.
4. D. Create a CloudFront invalidation.

Correct Answer: D

A CloudOps engineer needs to set up alerting and remediation for a web application. The application consists of Amazon EC2 instances that have AWS Systems Manager Agent (SSM Agent) installed. Each EC2 instance runs a custom web server. The EC2 instances run behind a load balancer and write logs locally.
The CloudOps engineer must implement a solution that restarts the web server software automatically if specific web errors are detected in the logs.
Which combination of steps will meet these requirements? (Select THREE.)

1. A. Install the Amazon CloudWatch agent on the EC2 instances.
2. B. Create an AWS CloudTrail metric filter for the web log
3. C. Configure an alarm for the specific errors.
4. D. Create an Amazon CloudWatch metric filter for the web log
5. E. Configure an alarm for the specific errors.
6. F. Publish alarm findings to Amazon Simple Email Service (Amazon SES). Invoke an AWS Lambda function to restart the web server software.
7. G. Create an Amazon EventBridge rule that responds to the alar
8. H. Configure the rule to invoke an AWS Systems Manager Automation runbook to restart the web server software.
9. I. Create an Amazon Simple Notification Service (Amazon SNS) notification that responds to the alar
10. J. Configure the notification to invoke an AWS Systems Manager Automation runbook to restart the web server software.

Correct Answer: ACE