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A company's engineering team is developing a new application that creates IAM Key Management Service (IAM KMS) CMK grants for users immediately after a grant IS created users must be able to use the CMK tu encrypt a 512-byte payload. During load testing, a bug appears |intermittently where AccessDeniedExceptions are occasionally triggered when a user rst attempts to encrypt using the CMK Which solution should the c0mpany's security specialist recommend'?
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Question 48 - SCS-C02 discussion

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A company has two IAM accounts within IAM Organizations. In Account-1. Amazon EC2 Auto Scaling is launched using a service-linked role. In Account-2. Amazon EBS volumes are encrypted with an IAM KMS key A Security Engineer needs to ensure that the service-linked role can launch instances with these encrypted volumes

Which combination of steps should the Security Engineer take in both accounts? (Select TWO.)

A.
Allow Account-1 to access the KMS key in Account-2 using a key policy
Answers
A.
Allow Account-1 to access the KMS key in Account-2 using a key policy
B.
Attach an IAM policy to the service-linked role in Account-1 that allows these actions CreateGrant. DescnbeKey, Encrypt, GenerateDataKey, Decrypt, and ReEncrypt
Answers
B.
Attach an IAM policy to the service-linked role in Account-1 that allows these actions CreateGrant. DescnbeKey, Encrypt, GenerateDataKey, Decrypt, and ReEncrypt
C.
Create a KMS grant for the service-linked role with these actions CreateGrant, DescnbeKey Encrypt GenerateDataKey Decrypt, and ReEncrypt
Answers
C.
Create a KMS grant for the service-linked role with these actions CreateGrant, DescnbeKey Encrypt GenerateDataKey Decrypt, and ReEncrypt
D.
Attach an IAM policy to the role attached to the EC2 instances with KMS actions and then allow Account-1 in the KMS key policy.
Answers
D.
Attach an IAM policy to the role attached to the EC2 instances with KMS actions and then allow Account-1 in the KMS key policy.
E.
Attach an IAM policy to the user who is launching EC2 instances and allow the user to access the KMS key policy of Account-2.
Answers
E.
Attach an IAM policy to the user who is launching EC2 instances and allow the user to access the KMS key policy of Account-2.
Suggested answer: C, D

Explanation:

because these are the steps that can ensure that the service-linked role can launch instances with encrypted volumes. A service-linked role is a type of IAM role that is linked to an AWS service and allows the service to perform actions on your behalf. A KMS grant is a mechanism that allows you to delegate permissions to use a customer master key (CMK) to a principal such as a service-linked role. A KMS grant specifies the actions that the principal can perform, such as encrypting and decrypting data. By creating a KMS grant for the service-linked role with the specified actions, you can allow the service-linked role to use the CMK in Account-2 to launch instances with encrypted volumes. By attaching an IAM policy to the role attached to the EC2 instances with KMS actions and then allowing Account-1 in the KMS key policy, you can also enable cross-account access to the CMK and allow the EC2 instances to use the encrypted volumes. The other options are either incorrect or unnecessary for meeting the requirement.

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asked 16/09/2024
Matthew Montgomery
32 questions
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