SAP-C02 Practice Question: Accelerate Workload Migration and Modernization

Exhibit

Refer to the exhibit.

```
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "dms:CreateReplicationInstance",
                "dms:CreateReplicationTask",
                "dms:StartReplicationTask"
            ],
            "Resource": "*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "rds:DescribeDBInstances",
                "s3:GetObject",
                "s3:ListBucket"
            ],
            "Resource": "*"
        }
    ]
}
```

An IAM policy is attached to a role used by AWS DMS for a database migration from an RDS MySQL instance to an S3 bucket. The migration fails with an access denied error when writing to S3. Which missing permission is the most likely cause?

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

✓

s3:PutObject

The policy allows s3:GetObject and s3:ListBucket, but not s3:PutObject, which is required for writing data to S3. The error is about writing, not reading. dms:StartReplicationTask is already allowed. rds:DescribeDBInstances is for reading RDS metadata. kms:Decrypt is only needed for encrypted buckets.

Answer analysis

Option-by-option breakdown

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

✗
kms:Decrypt
Why it's wrong here
kms:Decrypt is needed only if the S3 bucket is encrypted with KMS, but the error is access denied on S3, not KMS.
✗
rds:DescribeDBInstances
Why it's wrong here
This action is for reading RDS instance metadata, not writing to S3.
✗
dms:StartReplicationTask
Why it's wrong here
This action is already allowed in the policy.
✓
s3:PutObject
Why this is correct
DMS needs s3:PutObject to write data to the S3 bucket.

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

SAP-C02 Practice Question: Accelerate Workload Migration and Modernization

Exhibit

Why each option matters

Option-by-option breakdown

AWS S3 Storage Class Comparison

Related to this question