SAP-C02 Design for New Solutions Practice Question
Exhibit
Refer to the exhibit.
# IAM policy snippet
{
"Effect": "Allow",
"Action": "ec2:Describe*",
"Resource": "*"
}Refer to the exhibit. An IAM policy allows ec2:Describe* actions on all resources. A developer wants to also allow describing RDS instances. Which action must be added to the policy?
⚠ Common exam trap
Many candidates assume `ec2:Describe*` covers all AWS describe operations across services, but IAM actions are scoped per service namespace (e.g., `ec2:`, `rds:`), and each service has its own set of actions.
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
✓
rds:Describe*
AWS IAM policies use the `rds:Describe*` action to grant permission to describe RDS instances, DB snapshots, DB parameter groups, and other RDS resources. The `ec2:Describe*` action only covers EC2 resources, not RDS resources, so a separate RDS-specific action is required. The wildcard `*` after `Describe` matches all RDS describe operations, including `rds:DescribeDBInstances`.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
rds:List*
Why it's wrong here
List is not a standard action prefix.
- ✗
rds:Get*
Why it's wrong here
Get is not standard; use Describe.
- ✓
rds:Describe*
Why this is correct
rds:Describe* covers all describe actions for RDS.
- ✗
ec2:DescribeRdsInstances
Why it's wrong here
No such action exists.
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