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Download AWS Certified DevOps Engineer - Professional Exam Dumps
NEW QUESTION 40
A company is creating a software solution that executes a specific parallel-processing mechanism. The software can scale to tens of servers in some special scenarios. This solution uses a proprietary library that is license-based, requiring that each individual server have a single, dedicated license installed. The company has 200 licenses and is planning to run 200 server nodes concurrently at most.
The company has requested the following features:
* A mechanism to automate the use of the licenses at scale.
* Creation of a dashboard to use in the future to verify which licenses are available at any moment.
What is the MOST effective way to accomplish these requirements'?
In the user data script, acquire an available license from the Mappings section. Create an Auto Scaling lifecycle hook, then use it to update the mapping after the instance is terminated.C. Upload the licenses to a private Amazon S3 bucket. Populate an Amazon SQS queue with the list of licenses stored in S3. Create an AWS CloudFormation template that uses an Auto Scaling group to launch the servers. In the user data script acquire an available license from SQS. Create an Auto Scaling lifecycle hook, then use it to put the license back in SQS after the instance is terminated.D. Upload the licenses to an Amazon DynamoDB table. Create an AWS CloudFormation template that uses an Auto Scaling group to launch the servers. In the user data script, acquire an available license from the DynamoDB table. Create an Auto Scaling litecycle hook, then use it to update the mapping after the instance is terminated.
Answer: A
NEW QUESTION 41
Which tool will Ansible not use, even if available, to gather facts?
Answer: B
Explanation:
Ansible will use it's own `setup' module to gather facts for the local system. Additionally, if ohai or facter are installed, those will also be used and all variables will be prefixed with `ohai_' or
`facter_' respectively. `lsb_relase' is a Linux tool for determining distribution information.
Reference: http://docs.ansible.com/ansible/setup_module.html
NEW QUESTION 42
A DevOps Engineer must track the health of a stateless RESTful service sitting behind a Classic Load Balancer. The deployment of new application revisions is through a Cl/CD pipeline. If the service's latency increases beyond a defined threshold, deployment should be stopped until the service has recovered. Which of the following methods allow for the QUICKEST detection time?
Answer: C
Explanation:
https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-cloudwatch-metrics.html https://docs.aws.amazon.com/codedeploy/latest/userguide/deployments-stop.html
NEW QUESTION 43
Which of these techniques enables the fastest possible rollback times in the event of a failed deployment?
Answer: A
Explanation:
AWS specifically recommends Blue-Green for super-fast, zero-downtime deploys - and thus rollbacks, which are redeploying old code.
You use various strategies to migrate the traffic from your current application stack (blue) to a new version of the application (green). This is a popular technique for deploying applications with zero downtime. https://d0.awsstatic.com/whitepapers/overview-of-deployment-options-on- aws.pdf
NEW QUESTION 44
A DevOps engineer is architecting a continuous development strategy for a company's software as a service (SaaS) web application running on AWS. For application and security reasons, users subscribing to this application are distributed across multiple Application Load Balancers (ALBs), each of which has a dedicated Auto Scaling group and fleet of Amazon EC2 instances. The application does not require a build stage, and when it is committed to AWS CodeCommit, the application must trigger a simultaneous deployment to all ALBs. Auto Scaling groups, and EC2 fleets.
Which architecture will meet these requirements with the LEAST amount of configuration?
Answer: B
NEW QUESTION 45
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