MLS-C01 IAM Policy Practice Question

Exhibit

Refer to the exhibit.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:GetObject",
        "s3:PutObject"
      ],
      "Resource": "arn:aws:s3:::my-bucket/training/*"
    },
    {
      "Effect": "Allow",
      "Action": "s3:ListBucket",
      "Resource": "arn:aws:s3:::my-bucket",
      "Condition": {
        "StringLike": {
          "s3:prefix": "training/*"
        }
      }
    }
  ]
}

A data scientist is setting up an IAM policy for a SageMaker notebook instance that needs to read and write data in the 'training/' folder of an S3 bucket, and also list objects in the bucket. Does the policy satisfy the requirements?

⚠ Common exam trap

This question is invalid because it references a policy that is not displayed. In a real exam, the policy would be shown. Traps include overlooking the condition on ListBucket or assuming extra permissions are needed.

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

✓

Yes, the policy correctly grants the required permissions.

The stem does not include the IAM policy, so the question cannot be definitively answered as written. However, assuming a typical policy that grants s3:GetObject and s3:PutObject on the training/ prefix and s3:ListBucket with a condition restricting the prefix to training/*, the policy meets the requirements. Therefore, option A is correct under that interpretation. Option B is wrong because s3:DeleteObject is not required for reading and writing. Option C is wrong because s3:GetObject is allowed on the training/ objects, not on the bucket itself. Option D is wrong because the condition on ListBucket is valid and correctly limits listing to the training/ prefix.

Answer analysis

Option-by-option breakdown

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

✓
Yes, the policy correctly grants the required permissions.
Why this is correct
Assuming the policy grants the minimal permissions described, it satisfies the requirements. The explanation should note the missing policy.
✗
No, the policy must also include s3:DeleteObject for data cleaning.
Why it's wrong here
Incorrect because s3:DeleteObject is not required for reading, writing, and listing.
✗
No, the policy misses s3:GetObject for the bucket itself.
Why it's wrong here
Incorrect because s3:GetObject on the bucket is not needed; object-level permissions are sufficient.
✗
No, the condition on ListBucket is invalid.
Why it's wrong here
Incorrect because the condition on ListBucket with a prefix is valid and commonly used.

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

MLS-C01 IAM Policy Practice Question

Exhibit

Why each option matters

Option-by-option breakdown

AWS S3 Storage Class Comparison

Related to this question