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Question 563 of 1,730
Deployment and Migration →mediumMultiple ChoiceObjective-mapped

DBS-C01 CloudFormation DeletionPolicy Practice Question

This DBS-C01 practice question tests your understanding of deployment and migration. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: cloudFormation DeletionPolicy. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Exhibit

Refer to the exhibit.

CloudFormation snippet:
Resources:
  MyRDSInstance:
    Type: AWS::RDS::DBInstance
    Properties:
      DBInstanceClass: db.r5.large
      Engine: mysql
      MasterUsername: admin
      MasterUserPassword: !Ref 'DBPassword'
      DBSubnetGroupName: !Ref 'MyDBSubnetGroup'
      VPCSecurityGroups:
        - !Ref 'MySecurityGroup'
      MultiAZ: true
      StorageType: gp2
      AllocatedStorage: 100
      BackupRetentionPeriod: 30
      DeletionProtection: true

A developer deploys the CloudFormation stack. After testing, they delete the stack. What happens to the RDS instance?

Exhibit

Refer to the exhibit.

CloudFormation snippet:
Resources:
  MyRDSInstance:
    Type: AWS::RDS::DBInstance
    Properties:
      DBInstanceClass: db.r5.large
      Engine: mysql
      MasterUsername: admin
      MasterUserPassword: !Ref 'DBPassword'
      DBSubnetGroupName: !Ref 'MyDBSubnetGroup'
      VPCSecurityGroups:
        - !Ref 'MySecurityGroup'
      MultiAZ: true
      StorageType: gp2
      AllocatedStorage: 100
      BackupRetentionPeriod: 30
      DeletionProtection: true

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 RDS instance is deleted after a final snapshot is taken.

By default, when a CloudFormation stack containing an RDS DB instance is deleted, the instance is deleted and a final snapshot is taken automatically (unless the SkipFinalSnapshot property is explicitly set to true). The stem does not mention any custom DeletionPolicy or DeletionProtection, so the default behavior applies. Option B correctly describes this outcome.

Key principle: CloudFormation DeletionPolicy

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 RDS instance is retained and the stack deletion fails.

    Why it's wrong here

    This would only happen if DeletionProtection or a 'Retain' DeletionPolicy were explicitly set. The stem does not indicate any such configuration.

  • ✓

    The RDS instance is deleted after a final snapshot is taken.

    Why this is correct

    Correct. This is the default CloudFormation behavior: the instance is deleted and a final snapshot is taken.

    Related concept

    CloudFormation DeletionPolicy

  • ✗

    The RDS instance is deleted without a final snapshot.

    Why it's wrong here

    Incorrect. By default, a final snapshot is taken. Skipping it requires setting SkipFinalSnapshot to true.

  • ✗

    The RDS instance is retained and a final snapshot is taken automatically.

    Why it's wrong here

    Incorrect. The instance is deleted, not retained; the default DeletionPolicy is 'Delete'.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Candidates may mistakenly think that stack deletion always fails if the instance has any protection, but in the absence of explicit settings, the default is deletion with a final snapshot.

Detailed technical explanation

How to think about this question

Under the hood, CloudFormation evaluates the `DeletionPolicy` attribute for each resource during stack deletion. For AWS::RDS::DBInstance, the default `DeletionPolicy` is `Retain`, which means CloudFormation will not delete the resource and will mark the stack as `DELETE_FAILED`. To change this behavior, you must explicitly set `DeletionPolicy` to `Delete` or `Snapshot`. In real-world scenarios, this is critical for production databases to prevent accidental data loss, but it can also lead to orphaned resources if not managed properly.

KKey Concepts to Remember

  • CloudFormation DeletionPolicy
  • Final Snapshot

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

CloudFormation DeletionPolicy

Real-world example

How this comes up in practice

A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. CloudFormation DeletionPolicy Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.

What to study next

Got this wrong? Here's your next step.

Review cloudFormation DeletionPolicy, then practise related DBS-C01 questions on the same topic to reinforce the concept.

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FAQ

Questions learners often ask

What does this DBS-C01 question test?

Deployment and Migration — This question tests Deployment and Migration — CloudFormation DeletionPolicy.

What is the correct answer to this question?

The correct answer is: The RDS instance is deleted after a final snapshot is taken. — By default, when a CloudFormation stack containing an RDS DB instance is deleted, the instance is deleted and a final snapshot is taken automatically (unless the SkipFinalSnapshot property is explicitly set to true). The stem does not mention any custom DeletionPolicy or DeletionProtection, so the default behavior applies. Option B correctly describes this outcome.

What should I do if I get this DBS-C01 question wrong?

Review cloudFormation DeletionPolicy, then practise related DBS-C01 questions on the same topic to reinforce the concept.

What is the key concept behind this question?

CloudFormation DeletionPolicy

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Last reviewed: Jul 4, 2026

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This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.