DEA-C01 Data Security and Governance Practice Question

Exhibit

Refer to the exhibit.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::example-bucket/*",
      "Condition": {
        "StringEquals": {
          "s3:ExistingObjectTag/classification": "public"
        }
      }
    },
    {
      "Effect": "Deny",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::example-bucket/*",
      "Condition": {
        "Null": {
          "s3:ExistingObjectTag/classification": "true"
        }
      }
    }
  ]
}

The IAM policy shown is attached to an IAM role. When a user assumes this role and tries to read an object in example-bucket that has no tags, what will happen?

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

✓

The request will be denied because the Deny statement applies when the tag is missing

The Deny statement denies s3:GetObject if the object does not have the tag 'classification' (i.e., the tag is null). Since the object has no tags, the condition evaluates to true, and the action is denied. The Allow statement only allows if the tag equals 'public', which is not the case. The explicit Deny overrides any Allow, so access is denied.

Answer analysis

Option-by-option breakdown

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

✗
The request will be denied because the object does not have the 'public' tag
Why it's wrong here
Denied because of the Deny statement, not just lack of 'public' tag.
✗
The request will be allowed because the Allow statement grants access to all objects
Why it's wrong here
The Allow statement is conditional on the tag being 'public', which is not met.
✗
The request will be allowed because there is no explicit Deny
Why it's wrong here
There is an explicit Deny for objects without the tag.
✓
The request will be denied because the Deny statement applies when the tag is missing
Why this is correct
The Deny statement explicitly denies access when the tag is null.

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

Go deeper

DEA-C01 Data Security and Governance Practice Question

Exhibit

Why each option matters

Option-by-option breakdown

AWS S3 Storage Class Comparison

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