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Question 704 - SAA-C03 discussion

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A company is planning to migrate data to an Amazon S3 bucket The data must be encrypted at rest within the S3 bucket The encryption key must be rotated automatically every year.

Which solution will meet these requirements with the LEAST operational overhead?

A.
Migrate the data to the S3 bucket. Use server-side encryption with Amazon S3 managed keys (SSE-S3). Use the built-in key rotation behavior of SSE-S3 encryption keys.
Answers
A.
Migrate the data to the S3 bucket. Use server-side encryption with Amazon S3 managed keys (SSE-S3). Use the built-in key rotation behavior of SSE-S3 encryption keys.
B.
Create an AWS Key Management Service (AWS KMS) customer managed key Enable automatic key rotation Set the S3 bucket's default encryption behavior to use the customer managed KMS key. Migrate the data to the S3 bucket.
Answers
B.
Create an AWS Key Management Service (AWS KMS) customer managed key Enable automatic key rotation Set the S3 bucket's default encryption behavior to use the customer managed KMS key. Migrate the data to the S3 bucket.
C.
Create an AWS Key Management Service (AWS KMS) customer managed key Set the S3 bucket's default encryption behavior to use the customer managed KMS key. Migrate the data to the S3 bucket. Manually rotate the KMS key every year.
Answers
C.
Create an AWS Key Management Service (AWS KMS) customer managed key Set the S3 bucket's default encryption behavior to use the customer managed KMS key. Migrate the data to the S3 bucket. Manually rotate the KMS key every year.
D.
Use customer key material to encrypt the data Migrate the data to the S3 bucket. Create an AWS Key Management Service (AWS KMS) key without key material Import the customer key material into the KMS key. Enable automatic key rotation.
Answers
D.
Use customer key material to encrypt the data Migrate the data to the S3 bucket. Create an AWS Key Management Service (AWS KMS) key without key material Import the customer key material into the KMS key. Enable automatic key rotation.
Suggested answer: B

Explanation:

Understanding the Requirement: The data must be encrypted at rest with automatic key rotation every year, with minimal operational overhead.

Analysis of Options:

SSE-S3: This option provides encryption with S3 managed keys and automatic key rotation but offers less control and flexibility compared to KMS keys.

AWS KMS with Customer Managed Key (automatic rotation): This option offers full control over encryption keys, with AWS KMS handling automatic key rotation, minimizing operational overhead.

AWS KMS with Customer Managed Key (manual rotation): This requires manual intervention for key rotation, increasing operational overhead.

Customer Key Material: This involves more complex management, including importing key material and setting up automatic rotation, which increases operational overhead.

Best Option for Minimal Operational Overhead:

AWS KMS with a customer managed key and automatic rotation provides the needed security and key rotation with minimal operational effort. Setting the S3 bucket's default encryption to use this key ensures all data is encrypted as required.

AWS Key Management Service (KMS)

Amazon S3 default encryption

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asked 16/09/2024
victoria nagy
37 questions
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