The correct answer is that the plan will fail with an error indicating the state is locked. This happens because Terraform’s remote backend, such as S3 with DynamoDB, uses a state lock to prevent concurrent operations; when an apply fails mid-way, the lock is often not automatically released, leaving the state file inaccessible to other commands like plan. On the HashiCorp Terraform Associate TF-003 exam, this scenario tests your understanding of state locking behavior and the fact that locks persist after failures unless explicitly released or timed out. A common trap is assuming a failed apply automatically cleans up the lock, but in practice you must use `terraform force-unlock` or wait for the lock to expire. Memory tip: think of a stuck lock on a door—just because someone walked away doesn’t mean the door is unlocked.
TF-003 Understand Terraform's purpose Practice Question
This TF-003 practice question tests your understanding of understand terraform's purpose. 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.
A team uses a remote backend (S3) with state locking via DynamoDB. One team member runs terraform apply and it fails mid-way. Another team member immediately tries to run terraform plan. What is likely to happen?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The plan will fail with an error indicating the state is locked.
Option C is correct. The failed apply may have left a lock on the state, so the plan will fail to acquire the lock. Option A is incorrect because the lock is not automatically released after a failure in all backends. Option B is possible but the lock prevents it. Option D is incorrect because state is not automatically corrupted; it may be inconsistent but not necessarily corrupt.
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 plan will run successfully because the lock is automatically released after failure.
Why it's wrong here
Lock may remain until force-unlock or timeout.
✗
The plan will run but the state file will be corrupted.
Why it's wrong here
State is not corrupted; it remains in its last consistent state.
✓
The plan will fail with an error indicating the state is locked.
Why this is correct
DynamoDB-backed locking persists until manually released or after a timeout.
Clue confirmation
The clue word "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The plan will run successfully and show any partial changes.
Why it's wrong here
Without acquiring the lock, plan cannot proceed.
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.
Understand Terraform's purpose — This question tests Understand Terraform's purpose — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The plan will fail with an error indicating the state is locked. — Option C is correct. The failed apply may have left a lock on the state, so the plan will fail to acquire the lock. Option A is incorrect because the lock is not automatically released after a failure in all backends. Option B is possible but the lock prevents it. Option D is incorrect because state is not automatically corrupted; it may be inconsistent but not necessarily corrupt.
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: "immediately / without restart". Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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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