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HashiCorp Certified: Terraform Associate Terraform Associate (004) · Domain 5: Terraform modules

The `version` argument (registry sources only) and `ref` for Git sources

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Last reviewed September 25, 2026 · Leer en español

Modules change over time, and an unpinned module can silently pull in a new release that renames resources or changes defaults. Terraform gives you two different pinning mechanisms depending on where the module comes from, and the exam tests which one applies to which source.

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