Task Statement 1.4: Implement Deployment Strategies for Instance, Container, and Serverless Environments. DOP-C02 Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A company runs a critical web application on EC2 instances behind an Application Load Balancer. They need to deploy a new version with zero downtime. The application has a long startup time of 5 minutes and requires a database schema migration that is not backward compatible. The team must be able to roll back quickly if the new version fails. Which deployment strategy should the team use?

   • AImmutable deployment by terminating all instances and launching new ones
   • BIn-place rolling deployment with a 50% batch size
   • CCanary deployment by updating 10% of instances in the existing Auto Scaling group
   • DBlue/green deployment with a new Auto Scaling group and a separate target group, then switch the load balancer
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   A CodeDeploy deployment fails during the `BeforeInstall` lifecycle event. Which log file should you check first to troubleshoot the issue on the EC2 instance?

   • A/var/log/messages
   • B/var/log/nginx/error.log
   • C/var/log/codedeploy-agent.log
   • D/var/log/cloud-init-output.log
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   Which component must be installed and running on an EC2 instance for AWS CodeDeploy to deploy applications to it?

   • AAWS CLI
   • BAmazon CloudWatch Agent
   • CAWS Systems Manager Agent
   • DCodeDeploy agent
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A team runs a microservice on Amazon ECS with a desired count of 4 tasks. They want to deploy a new version that initially receives only 10% of traffic for monitoring, then gradually increases to 100% if metrics remain healthy. Which ECS deployment approach should the team use?

   • AUse the external deployment type and manually update the service's task definition
   • BUse the rolling update deployment type with a minimum healthy percent of 50% and maximum percent of 200%
   • CUse the rolling update deployment type with a minimum healthy percent of 100% and maximum percent of 100%
   • DUse the blue/green deployment type with CodeDeploy and a canary traffic-shifting configuration
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A company runs a stateful web application on a fleet of EC2 instances behind an Application Load Balancer. The application stores session state locally on each instance's root volume. The team needs to deploy a new version with zero downtime and the ability to instantly roll back to the previous version if the new version fails. Which deployment strategy should the team use?

   • ACanary deployment by updating a small percentage of instances in the existing Auto Scaling group
   • BBlue/green deployment with a new Auto Scaling group and a separate target group
   • CImmutable deployment by terminating all instances and launching new ones with the new version
   • DIn-place deployment using CodeDeploy with a rolling update
   Reveal Solution Discussion Select an answer first