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NEW QUESTION 39
An IT department manages a portfolio with Windows and Linux (Amazon and Red Hat Enterprise Linux) servers both on-premises and on AWS. An audit reveals that there is no process for updating OS and core application patches, and that the servers have inconsistent patch levels.
Which of the following provides the MOST reliable and consistent mechanism for updating and maintaining all servers at the recent OS and core application patch levels?
Answer: A
NEW QUESTION 40
You have an application hosted in AWS. This application was created using Cloudformation Templates and
Autoscaling. Now your application has got a surge of users which is decreasing the performance of the
application. As per your analysis, a change in the instance type to C3 would resolve the issue. Which of the
below option can introduce this change while minimizing downtime for end users?
to your Auto Scalinggroup that specifies an AutoScaling RollingUpdate in order to avoid downtime.B. Update the AWS CloudFormation template that contains the launch configuration with the new C3
instance type. Run a stack update with the updated template, and Auto Scaling will then update the
instances one at a time with the new instance type.C. Update the launch configuration in the AWS CloudFormation template with the new C3 instance type.
Add an UpdatePolicy attribute to the Auto Scaling group that specifies an AutoScalingRollingUpdate.
Run a stack update with the updated template.D. Copy the old launch configuration, and create a new launch configuration with the C3 instances. Update
the Auto Scalinggroup with the new launch configuration. Auto Scaling will then update the instance
type of all running instances.
Answer: C
Explanation:
Explanation
Ensure first that the cloudformation template is updated with the new instance type.
The AWS::AutoScaling::AutoScalingGroup resource supports an UpdatePoIicy attribute. This is used to
define how an Auto Scalinggroup resource is updated when
an update to the Cloud Formation stack occurs. A common approach to updating an Auto Scaling group is to
perform a rolling update, which is done by specifying
the AutoScalingRollingUpdate policy. This retains the same Auto Scaling group and replaces old instances
with new ones, according to the parameters specified.
Option A is invalid because this will cause an interruption to the users.
Option C is partially correct, but it does not have all the steps as mentioned in option B.
Option D is partially correct, but we need the AutoScalingRollingUpdate attribute to ensure a rolling update is
peformed.
For more information on AutoScaling Rolling updates please refer to the below link:
* https://aws.amazon.com/premiumsupport/knowledge-center/auto-scaling-group-rolling-updates/
NEW QUESTION 41
A company wants to create standard templates for deployment of their Infrastructure. Which AWS service can be used in this regard? Please choose one option.
Answer: B
Explanation:
Explanation
AWS Cloud Formation gives developers and systems administrators an easy way to create and manage a collection of related AWS resources, provisioning and updating them in an orderly and predictable fashion.
You can use AWS Cloud Formation's sample templates or create your own templates to describe the AWS resources, and any associated dependencies or runtime parameters, required to run your application. You don't need to figure out the order for provisioning AWS services or the subtleties of making those dependencies work. Cloud Formation takes care of this for you. After the AWS resources are deployed, you can modify and update them in a controlled and predictable way, in effect applying version control to your AWS infrastructure the same way you do with your software. You can also visualize your templates as diagrams and edit them using a drag-and-drop interface with the AWS CloudFormation Designer.
For more information on Cloudformation, please visit the link:
* https://aws.amazon.com/cloudformation/
NEW QUESTION 42
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