Exam AWS-SysOps topic 1 question 39 discussion

I think A is correct

The question is: Which task would be best accomplished with a script? The RDS, EBS's snapshots can be managed by AWS with AWS Backup. ELB is AWS managed. But, there's not an AWS managed service who can Automatically detect and stop unused or underutilized EC2 instances, that need to be a Script. So, C is the answear.

leverage AWS-managed solutions - RDS So Answer is B

To me it is an outdated question. As now, May 2021, every option is easily done using AWS without scripts. I would go with A.

B is the right answer. Automatic backup of RDS with Console is by default 7days. You can use AWS CLI for daily backups.

The answer is B. Although RDS backups are automated, daily backups with a monthly retention would be manually set. A - You'd use DLM C & D would be done via Autoscaling.

Answer A is correct. Manage backups using the AWS CLI The following examples show how to use Amazon Data Lifecycle Manager to manage the backups of your EBS volumes using the AWS CLI. Examples Create a lifecycle policy Display a lifecycle policy Modify a lifecycle policy Delete a lifecycle policy Create a lifecycle policy Use the create-lifecycle-policy command to create a lifecycle policy. To simplify the syntax, the example uses a JSON file, policyDetails.json, that includes the policy details. This example uses a resource type of VOLUME to create snapshots of all volumes with the specified target tags. To create snapshots of all volumes for all instances with the specified target tags, use a resource type of INSTANCE instead. aws dlm create-lifecycle-policy --description "My volume policy" --state ENABLED --execution-role-arn arn:aws:iam::12345678910:role/AWSDataLifecycleManagerDefaultRole --policy-details file://policyDetails.json https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/snapshot-lifecycle.html#snaphot-lifecycle-cli

It appears the question is wrong since not A cannot be correct answer. We can automate EBS snapshots with AWS data lifecycle manager https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/snapshot-lifecycle.html

A - Correct Answer Probably an outdated question. But read the first part of the question "You have been asked to automate many routine systems administrator BACKUP and RECOVERY activities" B - Already backed up by default And as for C & D ... Read the first part of the question again

Explanation for automating option C - Cloudwatch. https://aws.amazon.com/about-aws/whats-new/2013/01/08/use-amazon-cloudwatch-to-detect-and-shut-down-unused-amazon-ec2-instances/ Option A is the right answer for this.

A. Creating daily EBS snapshots with a monthly rotation of snapshots

what do we use for c?

A is not the answer, we do have Amazon Data Lifecycle Manager to automate the creation, retention, and deletion of Amazon EBS volume snapshots. This tool introduced since Jul-2018, maybe this is the question prior than that.