The correct answers are the module references using the format `terraform-aws-modules/vpc/aws` and `hashicorp/consul/aws`. This is because the Terraform Registry enforces a strict three-part source format of `<namespace>/<module>/<provider>`, where the namespace identifies the organization, the module is the specific repository name, and the provider denotes the target infrastructure platform. On the HashiCorp Terraform Associate TF-003 exam, this question tests your ability to distinguish between valid registry references and other source types like Git URLs or local file paths, which are common traps. A frequent mistake is omitting the provider segment or confusing a registry path with a version constraint syntax. To remember the pattern, think of it as a three-layer address: who made it, what it does, and where it runs.
TF-003 Interact with Terraform modules Practice Question
This TF-003 practice question tests your understanding of interact with terraform modules. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Which TWO of the following are valid ways to reference a module from the Terraform Registry?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
source = "hashicorp/consul/aws"
Options A and C are correct because the Terraform Registry uses the format <namespace>/<module>/<provider>. Option A (hashicorp/consul/aws) and C (terraform-aws-modules/vpc/aws) follow this pattern. Option B is a Git URL. Option D is a local path. Option E is missing the provider component.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
source = "hashicorp/consul"
Why it's wrong here
This is missing the provider component (e.g., /aws, /azurerm).
This is a Git source, not a registry module reference.
✓
source = "hashicorp/consul/aws"
Why this is correct
This is a valid registry module reference with namespace, module, and provider.
Related concept
Static NAT maps one inside address to one outside address.
✓
source = "terraform-aws-modules/vpc/aws"
Why this is correct
This is a valid registry module reference from the terraform-aws-modules namespace.
Related concept
Static NAT maps one inside address to one outside address.
✗
source = "./modules/consul"
Why it's wrong here
This is a local path source, not a registry module.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related TF-003 NAT questions on configuration and troubleshooting.
Interact with Terraform modules — This question tests Interact with Terraform modules — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: source = "hashicorp/consul/aws" — Options A and C are correct because the Terraform Registry uses the format <namespace>/<module>/<provider>. Option A (hashicorp/consul/aws) and C (terraform-aws-modules/vpc/aws) follow this pattern. Option B is a Git URL. Option D is a local path. Option E is missing the provider component.
What should I do if I get this TF-003 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related TF-003 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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