This TF-003 practice question tests your understanding of interact with terraform modules. 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.
After applying a module that creates a VPC, a user wants to use the VPC ID in another resource within the root configuration. How should they reference the output from the module?
vpc_id = module.vpc.vpc_id
Correct syntax to reference an output named 'vpc_id' from a module named 'vpc'.
vpc_id = module_vpc.vpc_id
Why wrong: Missing the module. prefix; correct syntax is module.<NAME>.<OUTPUT>.
vpc_id = data.module.vpc.vpc_id
Why wrong: Data sources use data. prefix, not for module outputs.
vpc_id = local.vpc_id
Why wrong: Local values are defined differently, not from module outputs.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
vpc_id = module.vpc.vpc_id
Module outputs are accessed using the syntax module.<MODULE_NAME>.<OUTPUT_NAME>. Option A is wrong because it uses a dot but without the module prefix. Option B is wrong because it uses a local variable syntax. Option D is wrong because it uses data source syntax.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
vpc_id = module.vpc.vpc_id
Why this is correct
Correct syntax to reference an output named 'vpc_id' from a module named 'vpc'.
Related concept
Read the scenario before looking for a memorised answer.
vpc_id = module_vpc.vpc_id
Why it's wrong here
Missing the module. prefix; correct syntax is module.<NAME>.<OUTPUT>.
vpc_id = data.module.vpc.vpc_id
Why it's wrong here
Data sources use data. prefix, not for module outputs.
vpc_id = local.vpc_id
Why it's wrong here
Local values are defined differently, not from module outputs.
Common exam traps
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
Missing the module. prefix; correct syntax is module.<NAME>.<OUTPUT>.
Detailed technical explanation
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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.
Interact with Terraform modules — study guide chapter
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FAQ
Interact with Terraform modules — This question tests Interact with Terraform modules — Read the scenario before looking for a memorised answer..
The correct answer is: vpc_id = module.vpc.vpc_id — Module outputs are accessed using the syntax module.<MODULE_NAME>.<OUTPUT_NAME>. Option A is wrong because it uses a dot but without the module prefix. Option B is wrong because it uses a local variable syntax. Option D is wrong because it uses data source syntax.
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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This TF-003 practice question is part of Courseiva's free HashiCorp certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the TF-003 exam.
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