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DOP-C02 · Question #229

DOP-C02 Question #229: Real Exam Question with Answer & Explanation

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Submitted by jakub_pl· Mar 6, 2026Resilient Cloud Solutions

Question

A company needs to implement failover for its application. The application includes an Amazon CloudFront distribution and a public Application Load Balancer (ALB) in an AWS Region. The company has configured the ALB as the default origin for the distribution. After some recent application outages, the company wants a zero-second RTO. The company deploys the application to a secondary Region in a warm standby configuration. A DevOps engineer needs to automate the failover of the application to the secondary Region so that HTTP GET requests meet the desired RTO. Which solution will meet these requirements?

Options

  • ACreate a second CloudFront distribution that has the secondary ALB as the default origin. Create
  • BCreate a new origin on the distribution for the secondary ALCreate a new origin group. Set the
  • CCreate Amazon Route 53 alias records that have a failover policy and Evaluate Target Health set
  • DCreate a CloudFront function that detects HTTP 5xx status codes. Configure the function to return

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Topics

#CloudFront origin groups#Global failover#Zero RTO#Multi-Region architecture
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