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Question 961 of 1,750

Configuration Management and IaC →hardMultiple ChoiceObjective-mapped

DOP-C02 Configuration Management and IaC Practice Question

This DOP-C02 practice question tests your understanding of configuration management and iac. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 team uses Terraform to manage AWS infrastructure. After a recent update, a state file shows that a security group rule was created, but the rule does not exist in AWS. Running 'terraform plan' shows no changes. 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.

A
The security group rule was imported into state but not defined in configuration.
Why wrong: Incorrect. If a resource is imported into state but not defined in configuration, 'terraform plan' would show a destroy change, not no changes.
B
The 'terraform refresh' command was not run before the plan.
Correct. The manual deletion of the rule from AWS without a subsequent refresh leaves the state file with the old resource. Terraform then shows no changes because it hasn't reconciled state with real-world infrastructure.
C
There is a conflict between multiple Terraform workspaces.
Why wrong: Incorrect. Workspace conflicts involve separate state files but do not cause a resource to be missing from AWS while still present in state within a single workspace.
D
The security group rule was added manually via the AWS console and is not managed by Terraform, causing state to be out of sync.
Why wrong: Incorrect. Adding a rule manually would create the resource in AWS, but the problem states the rule does not exist. This option does not explain the missing resource.

Full breakdown with real-world context →

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 'terraform refresh' command was not run before the plan.

Option B is correct. If a security group rule was deleted manually from AWS (e.g., via console or CLI), the state file still contains the resource. Without running 'terraform refresh', Terraform does not detect the deletion and assumes the state is accurate. Thus, 'terraform plan' shows no changes because it compares the current state (which still includes the rule) with the configuration (which likely does define it, otherwise plan would show a destroy). If 'terraform refresh' had been run, the state would be updated to remove the rule, and then plan would show a creation. Option A is incorrect because if the rule were imported into state but not defined in configuration, plan would show a destroy. Option C is incorrect because workspace conflicts typically cause state isolation issues, not missing resources. Option D is incorrect because adding a rule manually would create it, not cause it to be missing; the scenario states the rule does not exist in AWS.

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.

✗
The security group rule was imported into state but not defined in configuration.
Why it's wrong here
Incorrect. If a resource is imported into state but not defined in configuration, 'terraform plan' would show a destroy change, not no changes.
✓
The 'terraform refresh' command was not run before the plan.
Why this is correct
Correct. The manual deletion of the rule from AWS without a subsequent refresh leaves the state file with the old resource. Terraform then shows no changes because it hasn't reconciled state with real-world infrastructure.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
There is a conflict between multiple Terraform workspaces.
Why it's wrong here
Incorrect. Workspace conflicts involve separate state files but do not cause a resource to be missing from AWS while still present in state within a single workspace.
✗
The security group rule was added manually via the AWS console and is not managed by Terraform, causing state to be out of sync.
Why it's wrong here
Incorrect. Adding a rule manually would create the resource in AWS, but the problem states the rule does not exist. This option does not explain the missing resource.

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.

Trap categories for this question

Command / output trap
Incorrect. If a resource is imported into state but not defined in configuration, 'terraform plan' would show a destroy change, not no changes.

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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.

What to study next

Got this wrong? Here's your next step.

Identify which DOP-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.

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FAQ

Questions learners often ask

What does this DOP-C02 question test?

Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The 'terraform refresh' command was not run before the plan. — Option B is correct. If a security group rule was deleted manually from AWS (e.g., via console or CLI), the state file still contains the resource. Without running 'terraform refresh', Terraform does not detect the deletion and assumes the state is accurate. Thus, 'terraform plan' shows no changes because it compares the current state (which still includes the rule) with the configuration (which likely does define it, otherwise plan would show a destroy). If 'terraform refresh' had been run, the state would be updated to remove the rule, and then plan would show a creation. Option A is incorrect because if the rule were imported into state but not defined in configuration, plan would show a destroy. Option C is incorrect because workspace conflicts typically cause state isolation issues, not missing resources. Option D is incorrect because adding a rule manually would create it, not cause it to be missing; the scenario states the rule does not exist in AWS.

What should I do if I get this DOP-C02 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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