TF-003 Use the core Terraform workflow Practice Question
This TF-003 practice question tests your understanding of use the core terraform workflow. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
During a 'terraform plan', you see the following output: 'Plan: 1 to add, 2 to change, 0 to destroy.' However, after running 'terraform apply', the actual number of resources changed is different. What is the most likely reason?
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The configuration was modified after the plan was generated.
The plan is based on the state and configuration at the time of planning. If someone else applies changes concurrently or if the configuration changes between plan and apply, the plan becomes stale. Option A is wrong because refreshing state doesn't change the plan. Option C is wrong because 'terraform apply' does not modify configuration. Option D is wrong because locking prevents concurrent applies but doesn't cause discrepancy if the plan is still valid.
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.
✗
Terraform state locking prevented the apply from executing correctly.
Why it's wrong here
Locking prevents concurrent applies but doesn't cause plan mismatch.
✗
The state file was corrupted during the apply.
Why it's wrong here
State corruption would cause errors, not a different number of changes.
✓
The configuration was modified after the plan was generated.
Why this is correct
If the configuration changes between plan and apply, the apply uses the new config, so the plan is outdated.
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.
✗
The 'terraform apply' command includes an implicit refresh that changes the plan.
Why it's wrong here
Refresh updates state but does not change the planned actions unless the config changed.
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 practitioner preparing for the TF-003 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which TF-003 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.
Use the core Terraform workflow — This question tests Use the core Terraform workflow — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The configuration was modified after the plan was generated. — The plan is based on the state and configuration at the time of planning. If someone else applies changes concurrently or if the configuration changes between plan and apply, the plan becomes stale. Option A is wrong because refreshing state doesn't change the plan. Option C is wrong because 'terraform apply' does not modify configuration. Option D is wrong because locking prevents concurrent applies but doesn't cause discrepancy if the plan is still valid.
What should I do if I get this TF-003 question wrong?
Identify which TF-003 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.
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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Question Discussion
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