A company runs an application on Amazon EC2 instances in an Auto Scaling group. Scale- out actions take a long time because of long-running boot scripts. The CloudOps engineer must reduce scale-out time without overprovisioning.
Which solution will meet these requirements?

1. A. Change the launch configuration to use a larger instance size.
2. B. Increase the minimum number of instances in the Auto Scaling group.
3. C. Add a predictive scaling policy to the Auto Scaling group.
4. D. Add a warm pool to the Auto Scaling group.

Correct Answer: D

An Amazon EC2 instance is running an application that uses Amazon Simple Queue Service (Amazon SQS) queues. A CloudOps engineer must ensure that the application can read, write, and delete messages from the SQS queues.
Which solution will meet these requirements in the MOST secure manner?

1. A. Create an IAM user with an IAM policy that allows the sqs:SendMessage permission, the sqs:ReceiveMessage permission, and the sqs:DeleteMessage permission to the appropriate queue
2. B. Embed the IAM user's credentials in the application's configuration.
3. C. Create an IAM user with an IAM policy that allows the sqs:SendMessage permission, the sqs:ReceiveMessage permission, and the sqs:DeleteMessage permission to the appropriate queue
4. D. Export the IAM user's access key and secret access key as environment variables on the EC2 instance.
5. E. Create and associate an IAM role that allows EC2 instances to call AWS service
6. F. Attach an IAM policy to the role that allows sqs:* permissions to the appropriate queues.
7. G. Create and associate an IAM role that allows EC2 instances to call AWS services.Attach an IAM policy to the role that allows the sqs:SendMessage permission, the sqs:ReceiveMessage permission, and the sqs:DeleteMessage permission to the appropriate queues.

Correct Answer: D

A company's application is hosted by an internet provider at app.example.com. The company wants to access the application by using www.company.com, which the company owns and manages with Amazon Route 53.
Which Route 53 record should be created to address this requirement?

1. A. A record
2. B. Alias record
3. C. CNAME record
4. D. Pointer (PTR) record

Correct Answer: C

A SysOps administrator needs to encrypt an existing Amazon Elastic File System (Amazon EFS) file system by using an existing AWS KMS customer managed key.
Which solution will meet these requirements?

1. A. Use Amazon EFS replication to create a new file syste
2. B. Copy the data and metadata from the existing file system to the new file syste
3. C. Specify the KMS customer managed key in the replication configuratio
4. D. When the replication process finishes, fail over to the new encrypted file system.
5. E. Directly modify the file system to use encryptio
6. F. Specify the KMS customer managed key.
7. G. Use Amazon EFS replication to create a new file syste
8. H. Copy the data and metadata from the existing file system to the new file syste
9. I. Generate a new TLS certificat
10. J. Specify the TLS certificate in the replication configuratio
11. K. When the replication process finishes, fail over to the new encrypted file system.
12. L. Create a new EFS file system that is encrypted with the KMS customer managed ke
13. M. Create an Amazon EC2 instance to copy the file
14. N. Mount the encrypted file system and unencrypted file system on the instanc
15. O. Copy all data from the unencrypted file system to the encrypted file syste
16. P. Unmount the unencrypted file system and remove the temporary instance.

Correct Answer: A

A financial services company stores customer images in an Amazon S3 bucket in the us- east-1 Region. To comply with regulations, the company must ensure that all existing objects are replicated to an S3 bucket in a second AWS Region. If an object replication fails, the company must be able to retry replication for the object.
What solution will meet these requirements?

1. A. Configure Amazon S3 Cross-Region Replication (CRR). Use Amazon S3 live replication to replicate existing objects.
2. B. Configure Amazon S3 Cross-Region Replication (CRR). Use S3 Batch Replication to replicate existing objects.
3. C. Configure Amazon S3 Cross-Region Replication (CRR). Use S3 Replication Time Control (S3 RTC) to replicate existing objects.
4. D. Use S3 Lifecycle rules to move objects to the destination bucket in a second Region.

Correct Answer: B