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NEW QUESTION 37
Your team wants to begin practicing continuous delivery using CloudFormation, to enable automated
builds and deploys of whole, versioned stacks or stack layers. You have a 3-tier, mission-critical system.
Which of the following is NOT a best practice for using CloudFormation in a continuous delivery
environment?

A. Model your stack in one template, so you can leverage CloudFormation's state management and
dependency resolution to propagate all changes.B. Parametrize the template and use <code>Mappings</code> to ensure your template works in multiple
Regions.C. Use the AWS CloudFormation <code>ValidateTemplate</code> call before publishing changes to
AWS.D. Use CloudFormation to create brand new infrastructure for all stateless resources on each push, and
run integration tests on that set of infrastructure.

Answer: A

Explanation:
Putting all resources in one stack is a bad idea, since different tiers have different life cycles and
frequencies of change. For additional guidance about organizing your stacks, you can use two common
frameworks: a multi-layered architecture and service-oriented architecture (SOA).
Reference:
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/best-practices.html#organizingstack
s

 

NEW QUESTION 38
Which of the following is the right sequence of initial steps in the deployment of application revisions using
Code Deploy
1) Specify deployment configuration
2) Upload revision
3) Create application
4) Specify deployment group

A. 3,1,2 and 4B. 3,4,1 and 2C. 3,4,2 and 1D. 3, 2, 1 and 4

Answer: B

Explanation:
Explanation
The below diagram from the AWS documentation shows the deployment steps

For more information on the deployment steps please refer to the below link:
* http://docs.aws.amazon.com/codedeploy/latest/userguide/de
ployment-steps.html

 

NEW QUESTION 39
To run an application, a DevOps Engineer launches an Amazon EC2 instances with public IP addresses in a public subnet. A user data script obtains the application artifacts and installs them on the instances upon launch. A change to the security classification of the application now requires the instances to run with no access to the Internet. While the instances launch successfully and show as healthy, the application does not seem to be installed.
Which of the following should successfully install the application while complying with the new rule?

A. Create a security group for the application instances and whitelist only outbound traffic to the artifact repository. Remove the security group rule once the install is complete.B. Set up a NAT gateway. Deploy the EC2 instances to a private subnet. Update the private subnet's route table to use the NAT gateway as the default route.C. Launch the instances in a public subnet with Elastic IP addresses attached. Once the application is installed and running, run a script to disassociate the Elastic IP addresses afterwards.D. Publish the application artifacts to an Amazon S3 bucket and create a VPC endpoint for S3. Assign an IAM instance profile to the EC2 instances so they can read the application artifacts from the S3 bucket.

Answer: B

 

NEW QUESTION 40
You have been tasked with deploying a solution for your company that will store images, which the marketing department will use for its campaigns.
Employees are able to upload images via a web interface, and once uploaded, each image must be resized and watermarked with the company logo.
Image resize and watermark is not time-sensitive and can be completed days after upload if required.
How should you design this solution in the most highly available and cost-effective way?

A. Configure your web application to upload images to the Amazon Elastic Transcoder service.
Use the Amazon Elastic Transcoder watermark feature to add the company logo as a watermark on your images and then to upload the final images into an Amazon S3 bucket.B. Configure your web application to upload images to Amazon S3, and send the S3 object URI to an Amazon SQS queue.
Create an Auto Scaling launch configuration that uses Spot instances, specifying a price you are willing to pay.
Configure the instances in this Auto Scaling group to poll the Amazon SQS queue for new images and then resize and watermark the image before uploading the new images into Amazon S3 and deleting the message from the Amazon SQS queue.C. Configure your web application to upload images to Amazon S3, and send the Amazon S3 bucket URI to an Amazon SQS queue.
Create an Auto Scaling group and configure it to use Spot instances, specifying a price you are willing to pay.
Configure the instances in this Auto Scaling group to poll the SQS queue for new images and then resize and watermark the image before uploading the final images into Amazon S3.D. Configure your web application to upload images to the local storage of the web server.
Create a cronjob to execute a script daily that scans this directory for new files and then uses the Amazon EC2 Service API to launch 10 new Amazon EC2 instances, which will resize and watermark the images daily.

Answer: B

 

NEW QUESTION 41
You are in charge of designing Cloudformation templates for your company. One of the key requirements is to ensure that if a Cloudformation stack is deleted, a snapshot of the relational database is created which is part of the stack. How can you achieve this in the best possible way?

A. Use the Deletion policy of the cloudformation template to ensure a snapshot is created of the relational database.B. Use the Update policy of the cloudformation template to ensure a snapshot is created of the relational database.C. Create a snapshot of the relational database beforehand so that when the cloudformation stack is deleted, the snapshot of the database will be present.D. Create a new cloudformation template to create a snapshot of the relational database.

Answer: A

Explanation:
Explanation
The AWS documentation mentions the following
With the Deletion Policy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS Cloud Formation deletes the resource by default. Note that this capability also applies to update operations that lead to resources being removed.
For more information on the Deletion policy, please visit the below URL:
* http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/aws-attri bute-deletionpolicy.html

 

NEW QUESTION 42
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