Exam AWS Certified Security - Specialty topic 1 question 481 discussion

Exam question from Amazon's AWS Certified Security - Specialty

Question #: 481
Topic #: 1

[All AWS Certified Security - Specialty Questions]

A company's application uses Amazon DynamoDB to store data. The company's security policy requires all data to be encrypted at rest. The security policy also requires the company to use an on-premises hardware security module (HSM) to generate and manage the company's encryption keys.

A security engineer uses the on-premises HSM to generate an encryption key.

What should the security engineer do next to meet these requirements?

A. Generate a new AWS Key Management Service (AWS KMS) customer managed key. Import the new key material. Grant DynamoDB access to use the key. Create a new DynamoDB table, and select the new key as the encryption key. Import the data into DynamoDB.
B. Generate a new AWS Key Management Service (AWS KMS) customer managed key. Import the new key material. Create a new DynamoDB table, and select the new key as the encryption key. Disable the KMS key after table creation. Import the data into DynamoDB.
C. Generate a new AWS Key Management Service (AWS KMS) AWS managed key. Import the new key material. Grant DynamoDB access to use the key. Create a new DynamoDB table, and select the new key as the encryption key. Import the data into DynamoDB.
D. Generate a new AWS Key Management Service (AWS KMS) AWS managed key. Import the new key material. Use the AWS SDK integration with AWS KMS to encrypt the data locally by using the new KMS key. Create a new DynamoDB table, and select the new key as the encryption key. Disable the KMS key after table creation. Import the data into DynamoDB.

Show Suggested Answer

Suggested Answer: A 🗳️

by cloudenthusiast at June 2, 2023, 6:50 p.m.

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6_8ftwin

2 years ago

Selected Answer: A

DynamoDB only caches the Table Key for 5 minutes. "If DynamoDB gets a request for the cached table key after five minutes of inactivity, it sends a new request to AWS KMS to decrypt the table key. " https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/encryption.usagenotes.html#dynamodb-kms

upvoted 3 times

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cloudenthusiast

2 years ago

Selected Answer: A

A. Generate a new AWS Key Management Service (AWS KMS) customer managed key. Import the new key material. Grant DynamoDB access to use the key. Create a new DynamoDB table, and select the new key as the encryption key. Import the data into DynamoDB. In this solution, the security engineer generates a new customer managed key using the on-premises HSM and imports the key material into AWS KMS. The DynamoDB table is then created with the new key selected as the encryption key. By granting DynamoDB access to use the key, the data in the table will be encrypted at rest.

upvoted 3 times

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