This DVA-C02 practice question tests your understanding of deployment. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
The exhibit shows the output of the describe-instances command. An Elastic Beanstalk environment is configured to use this EC2 instance as a web server. The application is not accessible. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
The instance has been terminated.
The state shows 'terminated', so the instance is not running.
The security group does not allow HTTP traffic.
Why wrong: No information about security groups.
The instance does not have the correct Name tag.
Why wrong: The tag is present.
The instance does not exist.
Why wrong: The instance exists but is terminated.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The instance has been terminated.
Option B is correct because the instance state is 'terminated', meaning it is no longer running. Option A is wrong because the instance exists but is terminated. Option C is wrong because the tag is present. Option D is wrong because there is no indication of a security group issue.
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
For each option: why learners choose it and why it is or isn't the right answer here.
The instance has been terminated.
Why this is correct
The state shows 'terminated', so the instance is not running.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
The security group does not allow HTTP traffic.
Why it's wrong here
No information about security groups.
The instance does not have the correct Name tag.
Why it's wrong here
The tag is present.
The instance does not exist.
Why it's wrong here
The instance exists but is terminated.
Common exam traps
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
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.
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
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
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.
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FAQ
Deployment — This question tests Deployment — Static NAT maps one inside address to one outside address..
The correct answer is: The instance has been terminated. — Option B is correct because the instance state is 'terminated', meaning it is no longer running. Option A is wrong because the instance exists but is terminated. Option C is wrong because the tag is present. Option D is wrong because there is no indication of a security group issue.
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.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
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