HashiCorp Terraform Associate (004) Question 8
Single answer1a Explain what IaC isA company has been creating cloud networking, virtual machines, and storage accounts manually through a provider web console. After several production outages, the operations team discovers that environments are inconsistent because engineers often forget small configuration steps when rebuilding infrastructure. The team decides to adopt Terraform. Which outcome best demonstrates the core value of Infrastructure as Code (IaC) in this situation?
- A
Terraform allows the team to define infrastructure in version-controlled configuration files so environments can be created consistently and repeatedly.
- B
Terraform automatically eliminates the need for engineers to review infrastructure changes because the code is self-validating.
- C
Terraform converts all existing manually created infrastructure into code without requiring planning, import, or state management.
- D
Terraform ensures every infrastructure deployment is identical even if engineers make untracked manual changes outside Terraform.
Show answer and explanation
Correct answer: A
Explanation
Infrastructure as Code means managing and provisioning infrastructure through machine-readable configuration files rather than manual console actions. In Terraform, this is typically done with declarative configuration that defines the desired end state. The major benefit in this scenario is repeatability and consistency: the same code can be applied to recreate environments with fewer human errors, and the code can be version-controlled and reviewed. HashiCorp documentation and Terraform best practices emphasize declarative configuration, execution plans, and state as key parts of managing infrastructure safely and predictably. However, IaC does not remove the need for code review, does not automatically reverse-engineer all existing infrastructure without effort, and does not prevent drift if manual changes continue outside the IaC workflow.
- A. Correct.
Correct. This is the central idea of IaC: infrastructure is described in declarative configuration files that can be stored in version control, reviewed, reused, and applied repeatedly. In this scenario, using Terraform configurations helps reduce drift caused by forgotten manual steps and makes environment creation more consistent.
- B. Incorrect.
Incorrect. While IaC improves reviewability because changes can be proposed and reviewed as code, Terraform does not remove the need for human review. Validation and planning help detect issues, but organizations still use change review processes, pull requests, and approvals as best practices.
- C. Incorrect.
Incorrect. Terraform does not automatically convert all manually created infrastructure into code with no effort. Existing resources typically require importing into state and writing configuration that matches the desired infrastructure. Planning and state management remain important parts of adopting Terraform for existing environments.
- D. Incorrect.
Incorrect. IaC helps create consistency, but Terraform cannot guarantee identical deployments if people continue making manual changes outside of Terraform. Those out-of-band changes can introduce configuration drift unless they are detected and reconciled.