Exam ANS-C00 topic 1 question 37 discussion

Exam question from Amazon's ANS-C00

Question #: 37
Topic #: 1

Your organization leverages an IP Address Management (IPAM) product to manage IP address distribution. The IPAM exposes an API. Development teams use
CloudFormation to provision approved reference architectures. At deployment time, IP addresses must be allocated to the VPC. When the VPC is deleted, the
IPAM must reclaim the VPC's IP allocation.
Which method allows for efficient, automated integration of the IPAM with CloudFormation?

A. AWS CloudFormation parameters using the ג€Ref::ג€ intrinsic function
B. AWS CloudFormation custom resource using an AWS Lambda invocation.
C. CloudFormation::OpsWorks::Stack with custom Chef configuration.
D. AWS CloudFormation parameters using the ג€Fn::FindInMapג€ intrinsic function.

Show Suggested Answer

Suggested Answer: B 🗳️

by route53 at July 9, 2019, 9:14 a.m.

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route53

Highly Voted 3 years, 8 months ago

Answer B On the official study guide - Cloudformation chapter under exam essentials it says "custom resources in an AWS cloudformation template allows you to configure non-aws resources not supported by AWS. You can use custom resources to make calls to an IPAM"

upvoted 29 times

topcat

3 years, 8 months ago

I checked the book and you are correct

upvoted 4 times

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learningaws

Highly Voted 3 years, 8 months ago

I think is B: According the official guide: "When a custom resource is created, updated, or deleted, AWS CloudFormation sends a notification to an Amazon Simple Notification Service (Amazon SNS) topic or invokes an AWS Lambda function"

upvoted 6 times

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