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Question 297 - SCS-C01 discussion

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A company continually generates sensitive records that it stores in an S3 bucket. All objects in the bucket are encrypted using SSE-KMS using one of the company's CMKs. Company compliance policies require that no more than one month of data be encrypted using the same encryption key.

What solution below will meet the company's requirements?

Please select:

A.
Trigger a Lambda function with a monthly CloudWatch event that creates a new CMK and updates the S3 bucket to use the new CMK.
Answers
A.
Trigger a Lambda function with a monthly CloudWatch event that creates a new CMK and updates the S3 bucket to use the new CMK.
B.
Configure the CMK to rotate the key material every month.
Answers
B.
Configure the CMK to rotate the key material every month.
C.
Trigger a Lambda function with a monthly CloudWatch event that creates a new CMK, updates the S3 bucket to use thfl new CMK, and deletes the old CMK.
Answers
C.
Trigger a Lambda function with a monthly CloudWatch event that creates a new CMK, updates the S3 bucket to use thfl new CMK, and deletes the old CMK.
D.
Trigger a Lambda function with a monthly CloudWatch event that rotates the key material in the CMK.
Answers
D.
Trigger a Lambda function with a monthly CloudWatch event that rotates the key material in the CMK.
Suggested answer: A

Explanation:

You can use a Lambda function to create a new key and then update the S3 bucket to use the new key. Remember not to delete the old key, else you will not be able to decrypt the documents stored in the S3 bucket using the older key. Option B is incorrect because AWS KMS cannot rotate keys on a monthly basis

Option C is incorrect because deleting the old key means that you cannot access the older objects

Option D is incorrect because rotating key material is not possible.

For more information on AWS KMS keys, please refer to below URL:

https://docs.aws.amazon.com/kms/latest/developereuide/concepts.htmllThe correct answer is: Trigger a Lambda function with a monthly CloudWatch event that creates anew CMK and updates the S3 bucket to use the new CMK. Submit your Feedback/Queries to our Experts

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asked 16/09/2024
Timo Fahlenbck
34 questions
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