This DVA-C02 practice question tests your understanding of deployment. 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 is deploying a critical application using AWS CloudFormation. The stack contains a resource that, if deleted accidentally, would cause data loss. The company wants to protect this resource from being deleted during stack updates or deletions. Which THREE strategies can achieve this? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable termination protection on the CloudFormation stack.
Options A, C, and D are correct. DeletionPolicy Retain, TerminationProtection, and StackPolicy can prevent deletion. Option B is wrong because it does not prevent deletion. Option E is wrong because NestedStacks do not protect individual resources.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Wrap the resource in a nested stack.
Why it's wrong here
Nested stacks do not protect individual resources from deletion.
✓
Enable termination protection on the CloudFormation stack.
Static NAT maps one inside address to one outside address.
✗
Set the UpdateReplacePolicy attribute to 'Retain' on the resource.
Why it's wrong here
UpdateReplacePolicy only affects replacement during update, not deletion.
✓
Use a stack policy to deny delete actions on the resource.
Why this is correct
Stack policy can control update and deletion permissions.
Related concept
Static NAT maps one inside address to one outside address.
✓
Set the DeletionPolicy attribute to 'Retain' on the resource.
Why this is correct
Retain prevents deletion during stack deletion.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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 the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DVA-C02 NAT questions on configuration and troubleshooting.
Deployment — This question tests Deployment — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable termination protection on the CloudFormation stack. — Options A, C, and D are correct. DeletionPolicy Retain, TerminationProtection, and StackPolicy can prevent deletion. Option B is wrong because it does not prevent deletion. Option E is wrong because NestedStacks do not protect individual resources.
What should I do if I get this DVA-C02 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DVA-C02 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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