Question #836

试题更新时间: 2023-11-07 12:59:45

Once again your security officer is on your case and this time is asking you to make sure the AWS Key Management Service (AWS KMS) is working as it is supposed to. You are initially not too sure how KMS even works, however after some intense late night reading you think you have come up with a reasonable definition. Which of the following best describes how the AWS Key Management Service works? Choose the correct answer:

A. AWS KMS supports two kinds of keys — master keys and data keys. Master keys can be used to directly encrypt and decrypt up to 4 KiB of data and can also be used to protect data keys. The data keys are then used to decrypt the customer data, and the master keys are used to encrypt the customer data.

B. AWS KMS supports two kinds of keys — master keys and data keys. Master keys can be used to directly encrypt and decrypt up to 4 KiB of data and can also be used to protect data keys. The data keys are then used to encrypt the customer data and the master keys are used to decrypt the customer data.

C. AWS KMS supports two kinds of keys — master keys and data keys. Master keys can be used to directly encrypt and decrypt up to 4 KiB of data and can also be used to protect data keys. The master keys are then used to encrypt and decrypt customer data.

D. AWS KMS supports two kinds of keys — master keys and data keys. Master keys can be used to directly encrypt and decrypt up to 4 KiB of data and can also be used to protect data keys. The data keys are then used to encrypt and decrypt customer data.

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