TF-004 Read, generate and modify configuration Practice Question
Which command initializes a Terraform working directory by downloading providers and modules?
⚠ Common exam trap
Candidates often confuse `terraform init` with `terraform get`, mistakenly thinking `terraform get` handles both providers and modules. In reality, `terraform get` only manages modules while `terraform init` handles providers, modules, and backend initialization.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
terraform init
`terraform init` is the command that initializes a Terraform working directory by downloading and installing the required providers and modules specified in the configuration files. It also sets up the backend for state storage and locks, ensuring the environment is ready for subsequent operations like planning and applying.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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terraform plan
Why it's wrong here
The "terraform plan" command generates an execution plan, detailing the infrastructure changes Terraform proposes to make to reach the desired state. However, it cannot function without a properly initialized working directory, which means all required provider plugins and modules must first be downloaded and configured. Attempting to run `terraform plan` before `terraform init` will result in an error because Terraform lacks the necessary binaries to interpret the configuration and interact with cloud APIs.
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terraform apply
Why it's wrong here
The "terraform apply" command is responsible for executing the actions defined in a Terraform plan, provisioning or modifying infrastructure resources. This critical step inherently relies on a fully prepared working directory where all necessary provider plugins are installed and backend configurations are established. Without prior initialization, Terraform cannot connect to the target cloud providers or manage state, making `terraform apply` impossible to run successfully.
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terraform get
Why it's wrong here
The "terraform get" command is specifically designed to download and update modules referenced in the configuration from various sources, such as local paths, Git repositories, or the Terraform Registry. While modules are an important part of many Terraform configurations, `terraform get` does not handle the crucial task of downloading and installing provider plugins. Therefore, it cannot fully initialize a Terraform working directory by itself, as providers are essential for interacting with infrastructure APIs.
- ✓
terraform init
Why this is correct
The "terraform init" command is the fundamental operation for preparing a Terraform working directory for use. It performs several essential setup steps, including discovering and downloading all necessary provider plugins, retrieving remote modules, and configuring the backend for state management. This comprehensive initialization ensures that Terraform has all the required components to parse configurations, create execution plans, and apply infrastructure changes effectively.
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Senior Network & Security Engineer · founder of Courseiva
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