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Question 272 - SCS-C01 discussion

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A company requires that data stored in AWS be encrypted at rest. Which of the following approaches achieve this requirement? Select 2 answers from the options given below. Please select:

A.
When storing data in Amazon EBS, use only EBS-optimized Amazon EC2 instances.
Answers
A.
When storing data in Amazon EBS, use only EBS-optimized Amazon EC2 instances.
B.
When storing data in EBS, encrypt the volume by using AWS KMS.
Answers
B.
When storing data in EBS, encrypt the volume by using AWS KMS.
C.
When storing data in Amazon S3, use object versioning and MFA Delete.
Answers
C.
When storing data in Amazon S3, use object versioning and MFA Delete.
D.
When storing data in Amazon EC2 Instance Store, encrypt the volume by using KMS.
Answers
D.
When storing data in Amazon EC2 Instance Store, encrypt the volume by using KMS.
E.
When storing data in S3, enable server-side encryption.
Answers
E.
When storing data in S3, enable server-side encryption.
Suggested answer: B, E

Explanation:

The AWS Documentation mentions the following

To create an encrypted Amazon EBS volume, select the appropriate box in the Amazon EBS section of the Amazon EC2 console. You can use a custom customer master key (CMK) by choosing one from the list that appears below the encryption box. If you do not specify a custom CMK, Amazon EBS uses the AWS-managed CMK for Amazon EBS in your account. If there is no AWS-managed CMK for Amazon EBS in your account, Amazon EBS creates one. Data protection refers to protecting data while in-transit (as it travels to and from Amazon S3) and at rest (while it is stored on disks in Amazon S3 data centers). You can protect data in transit by using SSL or by using client-side encryption. You have the following options of protecting data at rest in Amazon S3.

• Use Server-Side Encryption - You request Amazon S3 to encrypt your object before saving it on disks in its data centers and decrypt it when you download the objects.

• Use Client-Side Encryption - You can encrypt data client-side and upload the encrypted data to Amazon S3. In this case, you manage the encryption process, the encryption keys, and related tools.

Option A is invalid because using EBS-optimized Amazon EC2 instances alone will not guarantee protection of instances at rest. Option C is invalid because this will not encrypt data at rest for S3 objects. Option D is invalid because you don't store data in Instance store. For more information on EBS encryption, please visit the below URL:

https://docs.aws.amazon.com/kms/latest/developerguide/services-ebs.htmlFor more information on S3 encryption, please visit the below URL:

https://docs.aws.amazon.com/AmazonS3/latest/dev/UsinEEncryption.htmlThe correct answers are: When storing data in EBS, encrypt the volume by using AWS KMS. Whenstoring data in S3, enable server-side encryption. Submit your Feedback/Queries to our Experts

asked 16/09/2024
Gerald Saraci
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