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Question 130 - SCS-C01 discussion

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A company has a customer master key (CMK) with imported key materials. Company policy requires that all encryption keys must be rotated every year. What can be done to implement the above policy?

A.
Enable automatic key rotation annually for the CMK.
Answers
A.
Enable automatic key rotation annually for the CMK.
B.
Use AWS Command Line Interface to create an AWS Lambda function to rotate the existing CMK annually.
Answers
B.
Use AWS Command Line Interface to create an AWS Lambda function to rotate the existing CMK annually.
C.
Import new key material to the existing CMK and manually rotate the CMK.
Answers
C.
Import new key material to the existing CMK and manually rotate the CMK.
D.
Create a new CMK, import new key material to it, and point the key alias to the new CMK.
Answers
D.
Create a new CMK, import new key material to it, and point the key alias to the new CMK.
Suggested answer: D

Explanation:

https://docs.aws.amazon.com/en_pv/kms/latest/developerguide/rotate-keys.html#rotate-keysmanually"You might prefer to rotate keys manually so you can control the rotation frequency. It's also a goodsolution for CMKs that are not eligible for automatic key rotation, such as asymmetric CMKs, CMKs incustom key stores and CMKs with imported key material. Because the new CMK is a differentresource from the current CMK, it has a different key ID and ARN. When you change CMKs, you needto update references to the CMK ID or ARN in your applications. Aliases, which associate a friendlyname with a CMK, make this process easier. Use an alias to refer to a CMK in your applications. Then,when you want to change the CMK that the application uses, change the target CMK of the alias. Toupdate the target CMK of an alias, use UpdateAlias operation in the AWS KMS API. "

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asked 16/09/2024
MIGUEL FERNANDEZ
36 questions
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