SCS-C02 Data Protection Practice Question

Exhibit

Refer to the exhibit.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Deny",
      "Principal": "*",
      "Action": "s3:PutObject",
      "Resource": "arn:aws:s3:::my-bucket/*",
      "Condition": {
        "StringNotEquals": {
          "s3:x-amz-server-side-encryption": "aws:kms"
        }
      }
    },
    {
      "Effect": "Deny",
      "Principal": "*",
      "Action": "s3:PutObject",
      "Resource": "arn:aws:s3:::my-bucket/*",
      "Condition": {
        "Null": {
          "s3:x-amz-server-side-encryption": "true"
        }
      }
    }
  ]
}

A security engineer applies the bucket policy shown in the exhibit to an S3 bucket. What is the effect of this policy?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Allows uploads only if they use SSE-KMS.

The bucket policy includes a Deny statement that restricts uploads based on encryption headers. Specifically, it denies requests where the x-amz-server-side-encryption header is not set to 'aws:kms' or where the x-amz-server-side-encryption-aws-kms-key-id is missing. This effectively allows only uploads that use SSE-KMS. Therefore, Option D is correct.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Allows uploads only if they use SSE-S3.
Why it's wrong here
Incorrect because the policy denies uploads that use SSE-S3; only SSE-KMS is allowed.
✗
Allows uploads without encryption.
Why it's wrong here
Incorrect because the policy denies uploads without encryption.
✗
Allows uploads with any server-side encryption.
Why it's wrong here
Incorrect because the policy denies uploads with server-side encryption other than SSE-KMS.
✓
Allows uploads only if they use SSE-KMS.
Why this is correct
Correct because the policy allows uploads only when the request specifies SSE-KMS.

Quick reference

AWS S3 Storage Class Comparison

Storage Class	Min Duration	Retrieval	Use Case
S3 Standard	None	Immediate	Frequently accessed data
S3 Standard-IA	30 days	Immediate	Infrequent access, rapid retrieval
S3 One Zone-IA	30 days	Immediate	Non-critical infrequent data
S3 Intelligent-Tiering	None	Immediate–hours	Unknown or changing access patterns
S3 Glacier Instant	90 days	Milliseconds	Archive with instant retrieval
S3 Glacier Flexible	90 days	Minutes–hours	Archive, flexible retrieval
S3 Glacier Deep Archive	180 days	Hours	Long-term compliance archive

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Data Protection Management and Security Governance Identity and Access Management Threat Detection and Incident Response

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SCS-C02 Data Protection Practice Question

Exhibit

Why each option matters

Option-by-option breakdown

AWS S3 Storage Class Comparison

Related to this question