The answer is that the operator did not run terraform init after changing the module version. This is correct because Terraform caches module source code locally after initialization; when you update a module version in your configuration, the working directory still holds the old cached version until terraform init is executed to download the new version and refresh the dependency lock file (.terraform.lock.hcl). Running terraform plan without reinitializing simply reads the stale cache, so no changes from the new module version appear. On the HashiCorp Terraform Associate TF-003 exam, this tests your understanding of the Terraform workflow lifecycle—specifically that init is required after any module source change, not just after adding new modules. A common trap is assuming plan alone will detect version bumps, but Terraform only checks the lock file during plan, not the registry. Memory tip: “Init before you see the shift”—always reinitialize to reflect a version lift.
TF-003 Read, generate and modify configuration Practice Question
This TF-003 practice question tests your understanding of read, generate and modify configuration. 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 Terraform configuration uses a module from the Terraform Registry. After updating the module version in the configuration, the operator runs 'terraform plan' but does not see the changes expected from the new version. 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
✓
The operator did not run 'terraform init' after changing the version.
When you change a module version in the configuration, Terraform must re-initialize the working directory to download the new version and update the dependency lock file (.terraform.lock.hcl). Running 'terraform plan' without first running 'terraform init' will use the previously cached module version, so the expected changes from the new version will not appear. 'terraform init' is the required command to fetch and lock the updated module source.
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 operator did not run 'terraform get' to update modules.
Why it's wrong here
'terraform get' is used to install modules, but 'terraform init' is the modern command.
✓
The operator did not run 'terraform init' after changing the version.
Why this is correct
'terraform init' downloads the specified module version.
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 operator did not run 'terraform refresh' to update state.
Why it's wrong here
Refresh updates state attributes, not module code.
✗
The module version constraint is stored in the state file and must be updated.
Why it's wrong here
Version constraints are in configuration, not state.
Common exam traps
Common exam trap: answer the scenario, not the keyword
HashiCorp often tests the misconception that 'terraform plan' automatically fetches new module versions, when in fact 'terraform init' is required to update the module cache and lock file before planning.
Trap categories for this question
Command / output trap
'terraform get' is used to install modules, but 'terraform init' is the modern command.
Detailed technical explanation
How to think about this question
Under the hood, 'terraform init' reads the required_providers and module blocks, resolves version constraints against the registry, downloads the specified version into the .terraform/modules directory, and updates the .terraform.lock.hcl file with the exact version hash. Without this step, Terraform uses the cached module directory from the previous initialization, ignoring the new version constraint. In real-world CI/CD pipelines, failing to run 'terraform init' after a version bump is a common cause of drift between planned and expected infrastructure changes.
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.
Read, generate and modify configuration — This question tests Read, generate and modify configuration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The operator did not run 'terraform init' after changing the version. — When you change a module version in the configuration, Terraform must re-initialize the working directory to download the new version and update the dependency lock file (.terraform.lock.hcl). Running 'terraform plan' without first running 'terraform init' will use the previously cached module version, so the expected changes from the new version will not appear. 'terraform init' is the required command to fetch and lock the updated module source.
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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