TF-003 Implement and maintain state Practice Question
This TF-003 practice question tests your understanding of implement and maintain state. 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.
A team is using a shared backend for Terraform state. After running terraform apply, the state file is locked for an extended period, causing other team members to fail with 'Error acquiring the state lock'. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A previous terraform apply command was interrupted or crashed, leaving a stale lock.
Option A is correct because Terraform uses a locking mechanism (typically via DynamoDB for AWS S3 backends) to prevent concurrent state modifications. If a `terraform apply` is interrupted or crashes, the lock may not be released, leaving a stale lock entry. This causes subsequent operations to fail with 'Error acquiring the state lock' until the lock is manually removed or expires (if TTL is configured).
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.
✓
A previous terraform apply command was interrupted or crashed, leaving a stale lock.
Why this is correct
A broken lock file causes the lock to persist indefinitely.
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.
✗
Another team member is actively running terraform apply on the same state.
Why it's wrong here
This would cause a temporary lock, not an extended one.
✗
The backend configuration was changed without running terraform init.
Why it's wrong here
This would cause a different error, not a lock error.
✗
The state file contains resources that no longer exist in the cloud provider.
Why it's wrong here
State drift does not cause lock errors.
Common exam traps
Common exam trap: answer the scenario, not the keyword
HashiCorp often tests the distinction between a legitimate lock held by another user (Option B) and a stale lock from a crashed process (Option A), where candidates mistakenly think any lock error means someone else is actively working.
Detailed technical explanation
How to think about this question
Terraform's state locking is implemented via a separate backend resource (e.g., DynamoDB table for S3, or a lease in Consul). When a lock is acquired, a record is written with a unique lock ID and a timestamp. If the process crashes, the lock record remains until manually deleted or until a TTL-based cleanup (if configured) removes it. In AWS, the DynamoDB table's `LockID` attribute is the key, and stale locks are a common issue in CI/CD pipelines where `terraform apply` may be killed mid-execution.
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.
TExam Day Tips
→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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Implement and maintain state — This question tests Implement and maintain state — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A previous terraform apply command was interrupted or crashed, leaving a stale lock. — Option A is correct because Terraform uses a locking mechanism (typically via DynamoDB for AWS S3 backends) to prevent concurrent state modifications. If a `terraform apply` is interrupted or crashes, the lock may not be released, leaving a stale lock entry. This causes subsequent operations to fail with 'Error acquiring the state lock' until the lock is manually removed or expires (if TTL is configured).
What should I do if I get this TF-003 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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