TERRAFORM-003 Practice Questions: Read, generate, and modify configuration Domain

Published: August 31, 2025 | 10 min read

Test your TERRAFORM-003 knowledge with 5 practice questions from the Read, generate, and modify configuration domain. Includes detailed explanations and answers.

TERRAFORM-003 Practice Questions

Master the Read, generate, and modify configuration Domain

Test your knowledge in the Read, generate, and modify configuration domain with these 5 practice questions. Each question is designed to help you prepare for the TERRAFORM-003 certification exam with detailed explanations to reinforce your learning.

Question 1

Your team uses a private Terraform registry to host custom modules for AWS infrastructure. You need to ensure that your Terraform configuration uses the latest version of a specific module from this registry. What is the best practice to achieve this?

A) Set the module version to `latest` in the configuration.

B) Run `terraform init -reconfigure` to update the module.

C) Specify a version constraint with a range in the module source.

D) Remove the version constraint to always use the latest version.

Show Answer & Explanation

Correct Answer: C

Explanation: Specifying a version constraint with a range allows you to define acceptable versions of a module, ensuring compatibility while using newer versions when available. Option A is incorrect because `latest` is not a valid version constraint in Terraform. Option B is incorrect because `terraform init -reconfigure` reinitializes the configuration but does not update module versions. Option D is incorrect because removing the version constraint could lead to unexpected changes and compatibility issues.

Question 2

Your team is using Terraform to manage infrastructure, and you want to conditionally create resources based on a variable value. Which feature allows you to define resources that should only be created if a condition is met?

A) `count` parameter with conditional logic

B) `for_each` parameter with conditional logic

C) `lifecycle` block with `ignore_changes`

D) `depends_on` argument with conditional logic

Show Answer & Explanation

Correct Answer: A

Explanation: The `count` parameter can be used with conditional logic to create resources conditionally. By setting `count` to 0 or 1 based on a condition, you can control whether a resource is created. Option B (`for_each`) is used for iterating over collections, not specifically for conditional creation. Option C (`lifecycle` with `ignore_changes`) is used to manage changes to existing resources, not for conditional creation. Option D (`depends_on`) is for managing dependencies, not conditional logic.

Question 3

You have updated a module version in your Terraform configuration and want to ensure that all syntax is properly formatted before applying changes. Which command should you use to achieve this?

A) `terraform plan`

B) `terraform fmt`

C) `terraform validate`

D) `terraform apply -replace`

Show Answer & Explanation

Correct Answer: B

Explanation: `terraform fmt` is the command used to format Terraform configuration files to a canonical format and ensure consistency. Option A (`terraform plan`) is used to create an execution plan, showing what actions Terraform will take. Option C (`terraform validate`) checks the syntax and validity but does not format the files. Option D (`terraform apply -replace`) is used to force the recreation of resources, not for formatting.

Question 4

You are managing a Terraform configuration that provisions a set of virtual machines on AWS. You need to ensure that a specific virtual machine resource is recreated during the next apply operation due to a configuration change. Which command should you use to achieve this?

A) terraform apply -replace=aws_instance.example

B) terraform refresh aws_instance.example

C) terraform plan -replace=aws_instance.example

D) terraform apply -refresh-only

Show Answer & Explanation

Correct Answer: A

Explanation: The command 'terraform apply -replace=aws_instance.example' will force Terraform to recreate the specified resource during the next apply operation. Option B is incorrect because 'terraform refresh' is deprecated. Option C is incorrect because 'terraform plan' does not apply changes. Option D is incorrect because 'terraform apply -refresh-only' only refreshes the state without making changes.

Question 5

You have updated a Terraform module that your configuration depends on. How can you ensure that your local module cache is updated with the latest version?

A) Run `terraform init -upgrade` to update the module cache.

B) Run `terraform init -reconfigure` to update the module cache.

C) Manually delete the module cache directory and run `terraform init`.

D) Run `terraform plan` to automatically update the module cache.

Show Answer & Explanation

Correct Answer: A

Explanation: The `terraform init -upgrade` command is used to upgrade modules to their latest versions in the local cache. `-reconfigure` is used to reinitialize the backend configuration, not for upgrading modules. Manually deleting the cache is not necessary, and `terraform plan` does not update the module cache.

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