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NEW QUESTION 44
Two teams are working together on different portions of an architecture and are using AWS CloudFormation to manage their resources. One team administers operating system-level updates and patches, while the other team manages application-level dependencies and updates. The Application team must take the most recent AMI when creating new instances and deploying the application. What is the MOST scalable method for linking these two teams and processes?
- A. The Operating System team uses CloudFormation stack to create an AWS CodePipeline pipeline that builds new AMIs. The team then places the AMI ARNs as parameters in AWS Systems Manager Parameter Store as part of the pipeline output. The Application team specifies a parameter of type ssm in their CloudFormation stack to obtain the most recent AMI ARN from the Parameter Store.
- B. The Operating System team uses CloudFormation stack to create an AWS CodePipeline pipeline that builds new AMIs, then places the latest AMI ARNs in an encrypted Amazon S3 object as part of the pipeline output. The Application team uses a cross-stack reference within their own CloudFormation template to get that S3 object location and obtain the most recent AMI ARNs to use when deploying their application.
- C. The Operating System team uses CloudFormation to create new versions of their AMIs and lists the Amazon Resource names (ARNs) of the AMIs in an encrypted Amazon S3 object as part of the stack output section. The Application team uses a cross-stack reference to load the encrypted S3 object and obtain the most recent AMI ARNs.
- D. The Operating System team maintains a nested stack that includes both the operating system and Application team templates. The Operating System team uses a stack update to deploy updates to the application stack whenever the Application team changes the application code.
Answer: B
NEW QUESTION 45
You need to create a Route53 record automatically in CloudFormation when not running in production
during all launches of a Template. How should you implement this?
- A. Create two templates, one with the Route53 record value and one with a null value for the record. Use
the one without it when deploying to production. - B. Create two templates, one with the Route53 record and one without it. Use the one without it when
deploying to production. - C. Use a <code>Parameter</code> for <code>environment</code>, and add a <code>Condition</code>
on the Route53 <code>Resource</code> in the template to create the record with a null string when
<code>environment</code> is <code>production</code>. - D. Use a <code>Parameter</code> for <code>environment</code>, and add a <code>Condition</code>
on the Route53 <code>Resource</code> in the template to create the record only when
<code>environment</code> is not <code>production</code>.
Answer: D
Explanation:
The best way to do this is with one template, and a Condition on the resource. Route53 does not allow
null strings for records.
Reference:
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/conditions-section-structure.html
NEW QUESTION 46
You need to know when you spend $1000 or more on AWS. What's the easy way for you to see that notification?
- A. Scrape the billing page periodically and pump into Kinesis.
- B. AWS CloudWatch Events tied to API calls, when certain thresholds are exceeded, publish to SNS.
- C. Scrape the billing page periodically and publish to SNS.
- D. AWS CloudWatch Metrics + Billing Alarm + Lambda event subscription. When a threshold is exceeded, email the manager.
Answer: D
Explanation:
Explanation: Even if you're careful to stay within the free tier, it's a good idea to create a billing alarm to notify you if you exceed the limits of the free tier. Billing alarms can help to protect you against unknowingly accruing charges if you inadvertently use a service outside of the free tier or if traffic exceeds your expectations.
Reference:
http://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/freetier-alarms.html
NEW QUESTION 47
A company is using AWS CodeDeploy to automate software deployment. The deployment must meet these requirements:
- A number of instances must be available to serve traffic during the
deployment. Traffic must be balanced across those instances, and the
instances must automatically heal in the event of failure.
- A new fleet of instances must be launched for deploying a new
revision automatically, with no manual provisioning.
- Traffic must be rerouted to the new environment to half of the new
instances at a time. The deployment should succeed if traffic is
rerouted to at least half of the instances; otherwise, it should fail.
- Before routing traffic to the new fleet of instances, the temporary
files generated during the deployment process must be deleted.
- At the end of a successful deployment, the original instances in the
deployment group must be deleted immediately to reduce costs.
How can a DevOps Engineer meet these requirements?
- A. Use an Application Load Balancer and a blue/green deployment. Associate the Auto Scaling group and the Application Load Balancer target group with the deployment group. Use the Automatically option, and use CodeDeployDefault HalfAtAtime as the deployment copy Auto Scaling group configuration. Instruct AWS CodeDeploy to terminate the original isntances in the deployment group, and use the BeforeAllowTraffic hook within appspec.yml to delete the temporary files.
- B. Use an Application Load Balancer and an in-place deployment. Associate the Auto Scaling group and Application Load Balancer target group with the deployment group. Use the Automatically copy option, and use CodeDeployDefault AllatOnce as a deployment configuration.
Auto Scaling group
Instruct AWS CodeDeploy to terminate the original instances in the deployment group, and use the BlockTraffic hook within appsec.yml to delete the temporary files. - C. Use an Application Load Balancer and a blue/green deployment. Associate the Auto Scaling group and the Application Load Balancer target group with the deployment group. Use the Automatically option, create a custom deployment configuration with minimum copy Auto Scaling group healthy hosts defined as 50%, and assign the configuration to the deployment group. Instruct AWS CodeDeploy to terminate the original instances in the deployment group, and use the BeforeBlock Traffic hook within appsec.yml to delete the temporary files.
- D. Use an Application Load Balancer and an in-place deployment. Associate the Auto Scaling group with the deployment group. Use the Automatically copy Auto Scaling group option, and use CodeDeployDefault.OneAtAtime as the deployment configuration. Instruct AWS CodeDeploy to terminate the original instances in the deployment group, and use the AllowTraffic hook within appspec.yml to delete the temporary files.
Answer: D
NEW QUESTION 48
When thinking of AWS Elastic Beanstalk's model, which is true?
- A. Applications have many deployments, deployments have many environments.
- B. Environments have many applications, applications have many deployments.
- C. Deployments have many environments, environments have many applications.
- D. Applications have many environments, environments have many deployments.
Answer: D
Explanation:
Applications group logical services. Environments belong to Applications, and typically represent different deployment levels (dev, stage, prod, fo forth). Deployments belong to environments, and are pushes of bundles of code for the environments to run.
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/Welcome.html
NEW QUESTION 49
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