You Are Building a Deployment System on AWS

question 596

Multiple Choice

You are building a deployment system on AWS. You will deploy new code by bootstrapping instances in a private subnet in a VPC at runtime using UserData scripts pointing to an S3 zip file object, where your code is stored. An ELB in a public subnet has network interfaces and connectivity to the instances. Requests from users of the system are routed to the ELB via a Route53 A Record Alias. You do not use any VPC endpoints. Which is a risk of using this approach?

• A) Route53 Alias records do not always update dynamically with ELB network changes after deploys.
• B) If the NAT routing for the private subnet fails, deployments fail.
• C) Kernel changes to the base AMI may render the code inoperable.
• D) The instances cannot be in a private subnet if the ELB is in a public one.

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