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Question 140 - SCS-C01 discussion

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Which option for the use of the AWS Key Management Service (KMS) supports key management best practices that focus on minimizing the potential scope of data exposed by a possible future key compromise?

A.
Use KMS automatic key rotation to replace the master key, and use this new master key for future encryption operations without re-encrypting previously encrypted data.
Answers
A.
Use KMS automatic key rotation to replace the master key, and use this new master key for future encryption operations without re-encrypting previously encrypted data.
B.
Generate a new Customer Master Key (CMK), re-encrypt all existing data with the new CMK, and use it for all future encryption operations.
Answers
B.
Generate a new Customer Master Key (CMK), re-encrypt all existing data with the new CMK, and use it for all future encryption operations.
C.
Change the CMK alias every 90 days, and update key-calling applications with the new key alias.
Answers
C.
Change the CMK alias every 90 days, and update key-calling applications with the new key alias.
D.
Change the CMK permissions to ensure that individuals who can provision keys are not the same individuals who can use the keys.
Answers
D.
Change the CMK permissions to ensure that individuals who can provision keys are not the same individuals who can use the keys.
Suggested answer: A

Explanation:

"automatic key rotation has no effect on the data that the CMK protects. It does not rotate the data keys that the CMK generated or re-encrypt any data protected by the CMK, and it will not mitigate the effect of a compromised data key. You might decide to create a new CMK and use it in place of the original CMK. This has the same effect as rotating the key material in an existing CMK, so it's often thought of as manually rotating the key." https://docs.aws.amazon.com/kms/latest/developerguide/rotate-keys.html

https://docs.aws.amazon.com/kms/latest/developerguide/rotate-keys.html#rotate-keys-manuallyfor AWS standards

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asked 16/09/2024
Chet Camlin
33 questions
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