The answer is module.my_module.instance_ips because Terraform requires module outputs to be referenced using the syntax module.<module_name>.<output_name>. This is a fundamental rule of Terraform’s namespace: each module exposes its outputs as attributes on the module object, distinct from input variables (var), resource attributes, or local values (local). On the HashiCorp Terraform Associate TF-003 exam, this concept tests your understanding of how data flows between modules, and it often appears in questions that ask you to correctly reference a value defined in a child module. A common trap is confusing module outputs with variable references or resource attributes, especially when the output name resembles a variable name. To avoid this, remember that module outputs are always accessed through the module path, never through var or local. A simple memory tip: think of the module as a black box with labeled output ports — you reach in with module.<name>.<port>, not with var or local.
TF-003 Interact with Terraform modules Practice Question
This TF-003 practice question tests your understanding of interact with terraform modules. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 module defines an output 'instance_ips'. In the root module, how should this value be referenced?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
module.my_module.instance_ips
Option A is correct because module outputs are referenced as module.<module_name>.<output_name>. Option B is wrong because var is for input variables. Option C is wrong because resource references are different. Option D is wrong because local is for local values.
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.
✗
var.instance_ips
Why it's wrong here
The var prefix is used for input variables declared in variable blocks, not module outputs.
✗
local.instance_ips
Why it's wrong here
The local prefix refers to local values within the same module, not outputs from other modules.
✗
resource.my_module.instance_ips
Why it's wrong here
Resource references use resource type and name, but module outputs use the module prefix.
✓
module.my_module.instance_ips
Why this is correct
This is the correct syntax to access an output from a module named 'my_module'.
Related concept
Read the scenario before looking for a memorised answer.
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.
Trap categories for this question
Command / output trap
The var prefix is used for input variables declared in variable blocks, not module outputs.
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.
Interact with Terraform modules — This question tests Interact with Terraform modules — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: module.my_module.instance_ips — Option A is correct because module outputs are referenced as module.<module_name>.<output_name>. Option B is wrong because var is for input variables. Option C is wrong because resource references are different. Option D is wrong because local is for local values.
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.
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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