A DevOps engineer is tasked with moving a mission-critical business application running in Go to AWS. The development team running this application is understaffed and requires a solution that allows the team to focus on application development. They also want to enable blue/green deployments and perform A/B testing.
Which solution will meet these requirements?

1. A. Deploy the application on an Amazon EC2 instance and create an AMI of this instanc
2. B. Use this AMI to create an automatic scaling launch configuration that is used in an Auto Scaling grou
3. C. Use an Elastic Load Balancer to distribute traffi
4. D. When changes are made to the application, a new AMI is created and replaces the launch configuration.
5. E. Use Amazon Lightsail to deploy the applicatio
6. F. Store the application in a zipped format in an Amazon S3 bucket Use this zipped version to deploy new versions of the application to Lightsai
7. G. Use Lightsail deployment options to manage the deployment.
8. H. Use AWS CodePipeline with AWS CodeDeploy to deploy the application to a fleet of Amazon EC2 instance
9. I. Use an Elastic Load Balancer to distribute the traffic to the EC2 instance
10. J. When making changes to the application, upload a new version to CodePipeline and let it deploy the new version.
11. K. Use AWS Elastic Beanstalk to host the applicatio
12. L. Store a zipped version of the application in AmazonS3, and use that location to deploy new versions of the application using Elastic Beanstalk to manage the deployment options.

Correct Answer: D

A company is using AWS CodeDeploy to manage its application deployments. Recently, the Development team decided to use GitHub for version control, and the team is looking for ways to integrate the GitHub repository with CodeDeploy. The team also needs to develop a way to automate deployment whenever there is a new commit on that repository. The team is currently deploying new application revisions by manually indicating the Amazon S3 location.
How can the integration be achieved in the MOST efficient way?

1. A. Create a GitHub webhook to replicate the repository to AWS CodeCommi
2. B. Create an AWSCodePipeline pipeline that uses CodeCommit as a source provider and AWS CodeDeploy as a deployment provide
3. C. Once configured, commit a change to the GitHub repository to start the first deployment.
4. D. Create an AWS CodePipeline pipeline that uses GitHub as a source provider and AWS CodeDeploy as a deployment provide
5. E. Connect this new pipeline with the GitHub account and instruct CodePipeline to use webhooks in GitHub to automatically start the pipeline when a change occurs.
6. F. Create an AWS Lambda function to check periodically if there has been a new commit within the GitHub repositor
7. G. If a new commit is found, trigger a CreateDeployment API call to AWS CodeDeploy to start a new deployment based on the last commit ID within the deployment group.
8. H. Create an AWS CodeDeploy custom deployment configuration to associate the GitHub repository with the deployment grou
9. I. During the association process, authenticate the deployment group with GitHub to obtain the GitHub security authentication toke
10. J. Configure the deployment group options to automatically deploy if a new commit is foun
11. K. Perform a new commit to the GitHub repository to trigger the first deployment.

Correct Answer: B

A company's application is currently deployed to a single AWS Region. Recently, the company opened a new office on a different continent. The users in the new office are experiencing high latency. The company's application runs on Amazon EC2 instances behind an Application Load Balancer (ALB) and uses Amazon DynamoDB as the database layer. The instances run in an EC2 Auto Scaling group across multiple Availability Zones. A DevOps Engineer is tasked with minimizing application response times and improving availability for users in both Regions.
Which combination of actions should be taken to address the latency issues? (Choose three.)

1. A. Create a new DynamoDB table in the new Region with cross-Region replication enabled.
2. B. Create new ALB and Auto Scaling group global resources and configure the new ALB to direct traffic to the new Auto Scaling group.
3. C. Create new ALB and Auto Scaling group resources in the new Region and configure the new ALB to direct traffic to the new Auto Scaling group.
4. D. Create Amazon Route 53 records, health checks, and latency-based routing policies to route to the ALB.
5. E. Create Amazon Route 53 aliases, health checks, and failover routing policies to route to the ALB.
6. F. Convert the DynamoDB table to a global table.

Correct Answer: CDF

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?

1. A. 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 sectio
2. B. The Application team uses a cross-stack reference to load the encrypted S3 object and obtain the most recent AMI ARNs.
3. C. 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 outpu
4. D. 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.
5. E. The Operating System team uses CloudFormation stack to create an AWS CodePipeline pipeline that builds new AMI
6. F. The team then places the AMI ARNs as parameters in AWS Systems Manager Parameter Store as part of the pipeline outpu
7. G. The Application team specifies a parameter of type ssm in their CloudFormation stack to obtain the most recent AMI ARN from the Parameter Store.
8. H. The Operating System team maintains a nested stack that includes both the operating system and Application team template
9. I. The Operating System team uses a stack update to deploy updates to theapplication stack whenever the Application team changes the application code.

Correct Answer: B

A publishing company used AWS Elastic Beanstalk, Amazon S3, and Amazon DynamoDB to develop a web application. The web application has increased dramatically in popularity, resulting in unpredictable spikes in traffic. A DevOps Engineer has noted that 90% of the requests are duplicate read requests.
How can the Engineer improve the performance of the website?

1. A. Use Amazon ElastiCache for Redis to cache repeated read requests to DynamoDB and AWS Elemental MediaStore to cache images stored in S3.
2. B. Use Amazon ElastiCache for Memcached to cache repeated read requests to DynamoDB and Varnish to cache images stored in S3.
3. C. Use DynamoDB Accelerator to cache repeated read requests to DynamoDB and Amazon CloudFront to cache images stored in S3.
4. D. Use DynamoDB Streams to cache repeated read requests to DynamoDB and API Gateway to cacheimages stored in S3.

Correct Answer: C
https://aws.amazon.com/blogs/aws/amazon-dynamodb-accelerator-dax-in-memory-caching-for-read-intensive-w
https://aws.amazon.com/dynamodb/dax/