Which statement about Terraform modules and nesting is true?

Which statement about Terraform modules and nesting is true?

• A. Modules cannot be nested
• B. Modules can only be called from root module
• C. A module must be defined in the same repository as the root module
• D. A module can call other modules

Answer: (D)

Terraform supports nesting modules to compose infrastructure from reusable pieces. A module can call other modules by including a module block inside its own configuration, passing inputs to the child and using the child’s outputs. This enables building complex architectures from smaller, well-defined components. This is why the statement that a module can call other modules is true: you can structure your configuration so a module acts as a parent and includes one or more child modules, at any depth, to assemble the full stack. Other statements don’t fit because modules can indeed be nested, they can be called from modules other than the root, and they don’t have to live in the same repository as the root module—the source can be a local path, a Git repository, or a registry.

Terraform supports nesting modules to compose infrastructure from reusable pieces. A module can call other modules by including a module block inside its own configuration, passing inputs to the child and using the child’s outputs. This enables building complex architectures from smaller, well-defined components.

This is why the statement that a module can call other modules is true: you can structure your configuration so a module acts as a parent and includes one or more child modules, at any depth, to assemble the full stack.

Other statements don’t fit because modules can indeed be nested, they can be called from modules other than the root, and they don’t have to live in the same repository as the root module—the source can be a local path, a Git repository, or a registry.