Exam AWS-SysOps topic 1 question 703 discussion

Exam question from Amazon's AWS-SysOps

Question #: 703
Topic #: 1

A company is planning to expand into an additional AWS Region for disaster recovery purposes. The company uses AWS CloudFormation, and its infrastructure is well-defined as code. The company would like to reuse as much of its existing code as possible when deploying resources to additional Regions.
A SysOps Administrator is reviewing how Amazon Machine Images (AMIs) are selected in AWS CloudFormation, but is having trouble making the same stack work in the new Region.
Which action would make it easier to manage multiple Regions?

A. Name each AMI in the new Region exactly the same as the equivalent AMI in the first Region.
B. Duplicate the stack so unique AMI names can be coded into the appropriate stack.
C. Create an alias for each AMI so that an AMI can be referenced by a common name across Regions.
D. Create a Mappings section in the stack, and define the Region to AMI associations.

Show Suggested Answer

Suggested Answer: B 🗳️

by RGT at Nov. 18, 2019, 8:15 a.m.

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RGT

Highly Voted 2 years, 7 months ago

i think it's D Only Amazon can alias their AMI https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/sharing-amis.html

upvoted 18 times

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karmaah

Highly Voted 2 years, 7 months ago

D is the right one. https://www.singlestoneconsulting.com/blog/cloudformation-mapping-and-conditionals-making-your-templates-more-universal/

upvoted 7 times

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albert_kuo

Most Recent 9 months, 3 weeks ago

Selected Answer: D

With the Mappings section, you can reuse the same CloudFormation template across multiple Regions, as the mapping information is decoupled from the resource definitions. This reduces the need for duplicating stacks or modifying the template for each Region.

upvoted 1 times

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