Implement and maintain state →hardMultiple ChoiceObjective-mapped

TF-004 Implement and maintain state Practice Question

Exhibit

Error: Backend configuration block requires a backend type

  on main.tf line 1, in terraform:
   1: terraform {
   2:   backend "s3" {
   3:   }
   4: }

An argument named "region" or "bucket" is required.

Refer to the exhibit. A developer creates a new Terraform configuration with this backend block and runs terraform init. What will happen?

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 will return an error and fail to initialize.

The backend block is missing required arguments (like bucket and region). Terraform will return an error during initialization and will not proceed.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Terraform will initialize with a local backend because the remote backend configuration is incomplete.
Why it's wrong here
Terraform requires a complete and valid backend configuration to proceed with initialization. If a remote backend, such as S3, is partially configured with missing mandatory arguments like 'bucket' or 'region', Terraform will not automatically revert to using the default local backend. Instead, it will halt the initialization process and report a configuration error, demanding that the specified remote backend be correctly defined before any state operations can occur.
✓
Terraform will return an error and fail to initialize.
Why this is correct
Terraform's 'init' command performs validation of the backend configuration early in its execution. When a remote backend, like AWS S3, is declared but critical, non-optional arguments such as 'bucket' or 'region' are omitted, Terraform identifies this as an invalid configuration. Consequently, it will immediately terminate the initialization process and output a specific error message indicating the missing required arguments, preventing any further operations.
✗
Terraform will use default values for the missing arguments and initialize successfully.
Why it's wrong here
Terraform does not provide default values for mandatory arguments within a backend configuration, especially for critical identifiers like the S3 'bucket' name or the AWS 'region'. These parameters are fundamental for Terraform to locate and manage the remote state file. Omitting them renders the backend configuration incomplete and unusable, leading to an initialization failure rather than a successful setup with assumed defaults.
✗
Terraform will prompt the developer interactively for the missing arguments.
Why it's wrong here
Terraform is designed for automation and non-interactive execution, particularly concerning backend configurations which define where state is stored. It does not possess a mechanism to interactively prompt the user for missing required arguments within a 'backend' block during 'terraform init'. Instead, it strictly validates the configuration provided and will report an error if essential parameters are absent, requiring explicit definition in the HCL code.

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TF-004 Implement and maintain state Practice Question

Exhibit

Why each option matters

Option-by-option breakdown

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