The answer is to use a DeletionPolicy attribute of Retain on the database resource and to apply an UpdatePolicy with a configuration that controls how changes are rolled out, such as using a rolling update or a replacement policy. The DeletionPolicy of Retain ensures that even if CloudFormation attempts to replace the database during a stack update, the original resource is preserved and not deleted, preventing data loss and downtime. The UpdatePolicy, often used with Auto Scaling groups or stateful resources, allows you to specify how CloudFormation handles updates—for example, by pausing traffic or using a canary deployment—so the database remains available while changes are applied. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of stateful resource management and safe update strategies, with a common trap being to choose a new stack or disabling rollback, which do not prevent downtime. Memory tip: think “Retain to remain, UpdatePolicy to uphold.”
SAP-C02 Continuous Improvement for Existing Solutions Practice Question
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. 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. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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.
A company uses AWS CloudFormation to deploy infrastructure. They need to ensure that updates to a stack do not cause downtime for a critical database. Which TWO strategies should they use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use an UpdatePolicy attribute for rolling updates.
Correct answers are B and C. Option B prevents deletion of the database. Option C uses update policies to control how changes are applied. Option A is wrong because a new stack would require data migration. Option D is wrong because disabling rollback is risky. Option E is wrong because service roles don't prevent downtime.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Create a new stack and migrate data.
Why it's wrong here
Migration increases downtime.
✓
Use an UpdatePolicy attribute for rolling updates.
Why this is correct
Rolling updates minimize downtime.
Related concept
Read the scenario before looking for a memorised answer.
✗
Disable rollback on stack update failures.
Why it's wrong here
Disabling rollback can leave resources in a bad state.
✗
Use a service role for CloudFormation.
Why it's wrong here
Service roles grant permissions, not downtime prevention.
✓
Use a DeletionPolicy attribute of Retain on the database resource.
Why this is correct
Retain prevents accidental deletion.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use an UpdatePolicy attribute for rolling updates. — Correct answers are B and C. Option B prevents deletion of the database. Option C uses update policies to control how changes are applied. Option A is wrong because a new stack would require data migration. Option D is wrong because disabling rollback is risky. Option E is wrong because service roles don't prevent downtime.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is using AWS CloudFormation to deploy infrastructure. They want to ensure that updates to a stack do not cause downtime for a critical web application. Which THREE strategies should they consider? (Choose THREE.)
easy
A.Use the DeletionPolicy attribute to retain resources.
✓ B.Apply a stack policy to protect critical resources.
✓ C.Use a rolling update strategy with an appropriate batch size.
✓ D.Use Change Sets to preview stack updates.
E.Use nested stacks to isolate components.
Why B: Option A is correct because change sets allow you to review changes before applying. Option B is correct because stack policies prevent updates to critical resources. Option D is correct because rolling updates with batch size reduce impact. Option C is wrong because deletion policy only protects against stack deletion, not updates. Option E is wrong because nested stacks don't inherently prevent downtime.
Last reviewed: Jun 20, 2026
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This SAP-C02 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 SAP-C02 exam.
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