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NEW QUESTION 52
An AWS CodePipeline pipeline has implemented a code release process. The pipeline is integrated with AWS CodeDeploy to deploy versions of an application to multiple Amazon EC2 instances for each CodePipeline stage.
During a recent deployment, the pipeline failed due to a CodeDeploy issue. The DevOps team wants to improve monitoring and notifications during deployment to decrease resolution times.
What should the DevOps Engineer do to create notifications when issues are discovered?
Answer: B
NEW QUESTION 53
You have an AWS OpsWorks Stack running Chef Version 11.10. Your company hosts its own proprietary cookbook on Amazon S3, and this is specified as a custom cookbook in the stack. You want to use an open-source cookbook located in an external Git repository. What tasks should you perform to enable the use of both custom cookbooks?
Answer: D
Explanation:
Explanation
To use an external cookbook on an instance, you need a way to install it and manage any dependencies. The preferred approach is to implement a cookbook that supports a dependency manager named Berkshelf.
Berkshelf works on Amazon CC2 instances, including AWS OpsWorks Stacks instances, but it is also designed to work with Test Kitchen and Vagrant.
For more information on Opswork and Berkshelf, please visit the link:
* http://docs.aws.amazon.com/opsworks/latest/userguide/cookbooks-101-opsworks-berkshelf.html
NEW QUESTION 54
A defect was discovered in production and a new sprint item has been created for deploying a hotfix. However, any code change must go through the following steps before going into production:
- Scan the code for security breaches, such as password and access key
leaks.
- Run the code through extensive, long running unit tests.
Which source control strategy should a DevOps Engineer use in combination with AWS CodePipeline to complete this process?
Use AWS Lambda to do a content scan and run unit tests. Add a manual approval stage that merges the hotfix branch into the master branch.C. Create a hotfix branch from the master branch. Triger the development pipeline from the hotfix branch.
Use AWS CodeBuild to do a content scan and run unit tests. Add a manual approval stage that merges the hotfix branch into the master branch.D. Create a hotfix tag on the last commit of the master branch. Trigger the development pipeline from the hotfix tag. Use AWS CodeDeploy with Amazon ECS to do a content scan and run unit tests. Add a manual approval stage that merges the hotfix tag into the master branch.
Answer: C
Explanation:
We need to create a feature branch to test the fix and codebuild can do both the scan and unit tests.
https://docs.aws.amazon.com/codebuild/latest/userguide/how-to-create-pipeline.html#how-to- create-pipeline-add
NEW QUESTION 55
Your application is currently running on Amazon EC2 instances behind a load balancer. Your management
has decided to use a Blue/Green deployment strategy. How should you implement this for each deployment?
DNS over to the new load balancer using Amazon Route 53 after testing.B. Launch more Amazon EC2 instances to ensure high availability, de-register each Amazon EC2 instance
from the load balancer, upgrade it, and test it, and then register it again with the load balancer.C. Set up Amazon Route 53 health checks to fail over from any Amazon EC2 instance that is currently
being deployed to.D. Using AWS CloudFormation, create a test stack for validating the code, and then deploy the code to
each production Amazon EC2 instance.
Answer: A
Explanation:
Explanation
The below diagram shows how this can be done
1) First create a new ELB which will be used to point to the new production changes.
2) Use the Weighted Route policy for Route53 to distribute the traffic to the 2 ELB's based on a 80-20% traffic
scenario. This is the normal case, the % can be changed based on the requirement.
3) Finally when all changes have been tested, Route53 can be set to 100% for the new ELB.
Option A is incorrect because this is a failover scenario and cannot be used for Blue green deployments. In
Blue Green deployments, you need to have 2 environments running side by side.
Option B is incorrect, because you need to a have a production stack with the changes which will run side by
side.
Option D is incorrect because this is not a blue green deployment scenario. You cannot control which users
will go the new EC2 instances.
For more information on blue green deployments, please refer to the below document link: from AWS
* https://dOawsstatic.com/whitepapers/AWS_Blue_Green_Deployments.pdf
NEW QUESTION 56
You are using Jenkins as your continuous integration systems for the application hosted in AWS. The builds are then placed on newly launched EC2 Instances. You want to ensure that the overall cost of the entire continuous integration and deployment pipeline is minimized. Which of the below options would meet these requirements? Choose 2 answers from the options given below
Answer: A,C
Explanation:
Explanation
To ensure low cost, one can carry out the build tests on the Jenkins server itself. Once the build tests are completed, the build can then be transferred onto newly launched CC2 Instances.
For more information on AWS and Jenkins, please visit the below URL:
* https://aws.amazon.com/getting-started/projects/setup-jenkins-build-server/ Option D is incorrect. It would be right choice in case the requirement is to get better speed.
NEW QUESTION 57
......
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