Task 4: Deploy Code by Using AWS Continuous Integration and Continuous Delivery (CI/CD) Services DVA-C02 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   Which deployment strategy involves deploying the new version to a small percentage of traffic and gradually increasing it until all traffic is on the new version?

   • ARolling
   • BCanary
   • CAll-at-once
   • DBlue/green
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2. 22expert · hard

   A company runs a production web application on EC2 instances behind an Application Load Balancer. They use AWS CodeDeploy to manage deployments. The team wants to minimize downtime and have the ability to roll back quickly if a deployment fails. They also need to keep the same EC2 instances (do not want to provision new infrastructure). Which deployment strategy should they use?

   • ACanary deployment with a small percentage of traffic shifted to a new version on existing instances.
   • BRolling deployment with a deployment group that updates instances in batches.
   • CAll-at-once deployment with automatic rollback on CloudWatch alarms.
   • DBlue/green deployment with a new Auto Scaling group and traffic shift via the load balancer.
   Reveal Solution Discussion Select an answer first
4. 23application · medium

   A developer has an API Gateway REST API deployed to a 'prod' stage. The company wants users to access the API via the custom domain 'api.example.com' and have requests routed to the 'prod' stage. The developer has already created a custom domain name in API Gateway and attached an SSL/TLS certificate. What additional configuration is required to complete the setup?

   • ACreate a base path mapping that associates the custom domain with the 'prod' stage of the API.
   • BConfigure a CNAME record in Amazon Route 53 pointing to the API Gateway regional endpoint.
   • CUpdate the Lambda function's resource policy to allow requests from the custom domain.
   • DRe-deploy the API to a new stage named 'api.example.com' to match the custom domain.
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5. 24foundation · easy

   In a CodePipeline, what is a 'stage'?

   • AA separate environment for testing the application
   • BA version of the application code
   • CA configuration file that defines the pipeline
   • DA set of actions that perform a specific task, such as building or deploying
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6. 25foundation · easy

   In Amazon API Gateway, what is the purpose of a stage?

   • ATo define the backend integration for an API method
   • BTo store API keys for client authentication
   • CTo configure the domain name for the API
   • DTo isolate and manage different versions of an API deployment
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