Exam AWS Certified Cloud Practitioner topic 1 question 628 discussion

Exam question from Amazon's AWS Certified Cloud Practitioner

Question #: 628
Topic #: 1

[All AWS Certified Cloud Practitioner Questions]

A company has two AWS accounts in an organization in AWS Organizations for consolidated billing. All of the company’s AWS resources are hosted in one AWS Region.

Account A has purchased five Amazon EC2 Standard Reserved Instances (RIs) and has four EC2 instances running. Account B has not purchased any RIs and also has four EC2 instances running.

Which statement is true regarding pricing for these eight instances?

A. The eight instances will be charged as regular instances.
B. Four instances will be charged as RIs, and four will be charged as regular instances.
C. Five instances will be charged as RIs, and three will be charged as regular instances.
D. The eight instances will be charged as RIs.

Show Suggested Answer

Suggested Answer: C 🗳️

by alexbic1890 at Feb. 12, 2023, 6:20 p.m.

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alexbic1890

Highly Voted 2 years, 5 months ago

Answer C https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/consolidatedbilling-other.html "For an Amazon EC2 Reserved Instances example, suppose that Bob and Susan each have an account in an organization. Susan has five Reserved Instances of the same type, and Bob has none. During one particular hour, Susan uses three instances and Bob uses six, for a total of nine instances on the organization's consolidated bill. AWS bills five instances as Reserved Instances, and the remaining four instances as regular instances."

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DCV

Most Recent 1 year, 11 months ago

Answer is D actually. Account A and Account B are both charged as RIs for all of their instances, because the RIs are scoped to a Region, not to an Availability Zone. This means that the RIs can be applied to any matching usage within the same Region, regardless of the Availability Zone or the account. Therefore, the five RIs purchased by Account A are enough to cover the eight instances running by both accounts, as long as they match the attributes of the RIs.

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