QUESTION: 29

A company is using an Amazon Aurora MySQL DB cluster that has point-in-time recovery, backtracking, and automatic backup enabled. A SysOps administrator needs to be able to roll back the DB cluster to a specific recovery point within the previous 72 hours. Restores must be completed in the same production DB cluster.
Which solution will meet these requirements?

Create an Aurora Replica. Promote the replica to replace the primary DB instance.
Create an AWS Lambda function to restore an automatic backup to the existing DB cluster.
Use backtracking to rewind the existing DB cluster to the desired recovery point.
Use point-in-time recovery to restore the existing DB cluster to the desired recovery point.

Answer(s): C

Reference:

https://aws.amazon.com/premiumsupport/knowledge-center/aurora-mysql-slow-snapshot-restore/

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QUESTION: 30

A user working in the Amazon EC2 console increased the size of an Amazon Elastic Block Store (Amazon EBS) volume attached to an Amazon EC2 Windows instance. The change is not reflected in the file system.
What should a SysOps administrator do to resolve this issue?

Extend the file system with operating system-level tools to use the new storage capacity.
Reattach the EBS volume to the EC2 instance.
Reboot the EC2 instance that is attached to the EBS volume.
Take a snapshot of the EBS volume. Replace the original volume with a volume that is created from the snapshot.

Answer(s): A

Reference:

https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/recognize-expanded-volume-windows.html

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QUESTION: 31

A SysOps administrator is using Amazon EC2 instances to host an application. The SysOps administrator needs to grant permissions for the application to access an Amazon DynamoDB table.
Which solution will meet this requirement?

Create access keys to access the DynamoDB table. Assign the access keys to the EC2 instance profile.
Create an EC2 key pair to access the DynamoDB table. Assign the key pair to the EC2 instance profile.
Create an IAM user to access the DynamoDB table. Assign the IAM user to the EC2 instance profile.
Create an IAM role to access the DynamoDB table. Assign the IAM role to the EC2 instance profile.

Answer(s): D

Reference:

https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/authentication-and-access-control.html

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QUESTION: 32

A SysOps administrator wants to protect objects in an Amazon S3 bucket from accidental overwrite and deletion. Noncurrent objects must be kept for 90 days and then must be permanently deleted. Objects must reside within the same AWS Region as the original S3 bucket.
Which solution meets these requirements?

Create an Amazon Data Lifecycle Manager (Amazon DLM) lifecycle policy for the S3 bucket. Add a rule to the lifecycle policy to delete noncurrent objects after 90 days.
Create an AWS Backup policy for the S3 bucket. Create a backup rule that includes a lifecycle to expire noncurrent objects after 90 days.
Enable S3 Cross-Region Replication on the S3 bucket. Create an S3 Lifecycle policy for the bucket to expire noncurrent objects after 90 days.
Enable S3 Versioning on the S3 bucket. Create an S3 Lifecycle policy for the bucket to expire noncurrent objects after 90 days.

Answer(s): D

Reference:

https://cloudacademy.com/blog/s3-lifecycle-policies-versioning-encryption-aws-security/

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