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 uses AWS CloudFormation to manage infrastructure. A developer wants to update a stack but needs to ensure that certain resources are not accidentally deleted. The developer wants to protect specific resources from stack updates that would delete them. Which CloudFormation feature should the developer use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set the DeletionPolicy attribute to Retain on the resources
Option C is correct because termination protection prevents a stack from being deleted, but not individual resources. Stack policy controls which resources can be updated or deleted. Option A is incorrect because a stack policy can protect resources. Option B is incorrect because a Change Set shows changes but does not prevent deletion. Option D is incorrect because DeletionPolicy is a resource attribute that can preserve resources, but it is set at resource level, not during update.
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.
✗
Enable termination protection on the stack
Why it's wrong here
Termination protection prevents stack deletion, not resource deletion.
✗
Use a Change Set to review changes before applying them
Why it's wrong here
Change Sets are for reviewing, not preventing.
✗
Use a stack policy to prevent deletion of specific resources
Why it's wrong here
Stack policies are for updates, not deletion prevention.
✓
Set the DeletionPolicy attribute to Retain on the resources
Why this is correct
DeletionPolicy: Retain prevents deletion of specific resources during stack update or 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: Set the DeletionPolicy attribute to Retain on the resources — Option C is correct because termination protection prevents a stack from being deleted, but not individual resources. Stack policy controls which resources can be updated or deleted. Option A is incorrect because a stack policy can protect resources. Option B is incorrect because a Change Set shows changes but does not prevent deletion. Option D is incorrect because DeletionPolicy is a resource attribute that can preserve resources, but it is set at resource level, not during update.
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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