DBS-C01 Deployment and Migration Practice Question
Exhibit
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "rds:CreateDBInstance",
"Resource": "*"
},
{
"Effect": "Allow",
"Action": "rds:DescribeDBInstances",
"Resource": "*"
}
]
}Refer to the exhibit. An IAM policy is attached to a user who needs to deploy an RDS MySQL instance. After creating the instance, the user tries to modify it to enable deletion protection, but the action fails. What is the most likely reason?
⚠ Common exam trap
Test-takers frequently assume the `rds:CreateDBInstance` permission includes the ability to modify any instance property after creation, but AWS IAM separates create and modify actions, and deletion protection specifically requires the `ModifyDBInstance` action.
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 user does not have permission to enable deletion protection.
The IAM policy shown in the exhibit grants `rds:CreateDBInstance` but does not include `rds:ModifyDBInstance` or the specific action required to enable deletion protection (`rds:ModifyDBInstance` with the `DeletionProtection` parameter). Enabling deletion protection is a modification action, not part of the creation process, so the user lacks the necessary IAM permission for that operation.
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 user does not have permission to describe instances.
Why it's wrong here
Describe is allowed.
- ✗
The resource ARN is not specified in the policy.
Why it's wrong here
Resource * is valid.
- ✓
The user does not have permission to enable deletion protection.
Why this is correct
Missing ModifyDBInstance action.
- ✗
The user does not have permission to create the instance.
Why it's wrong here
Create is allowed.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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