Root module concept in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the root module source.

Terraform

module "network" {
  source = "[1]"
}

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Aroot_module

Baws_vpc

Cterraform

D./modules/network

Attempts:

3 left

💡 Hint

Common Mistakes

Using a provider name instead of a path.

Using 'root_module' as source which is not valid.

The root module uses a relative path to include local modules. Here, ./modules/network points to the network module folder.

2fill in blank

medium

Complete the code to declare a variable in the root module.

Terraform

variable "region" {
  type    = string
  default = "[1]"
}

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Amodule

Bus-east-1

Cterraform

Droot

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'terraform' or 'module' as a region value.

Leaving the default empty.

The default value for the region variable is a valid AWS region string like us-east-1.

3fill in blank

hard

Fix the error in the root module output block.

Terraform

output "vpc_id" {
  value = module.network.[1]
}

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Avpcid

BvpcId

Cvpc_id

DVpcId

Attempts:

3 left

💡 Hint

Common Mistakes

Using camelCase or PascalCase instead of snake_case.

Misspelling the attribute name.

Outputs must match the exact attribute name exposed by the module. Usually, Terraform uses snake_case like vpc_id.

4fill in blank

hard

Fill both blanks to correctly pass a variable from the root module to a child module.

Terraform

module "compute" {
  source = "./modules/compute"
  [1] = var.[2]
}

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Aregion

Binstance_type

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing variable names between left and right sides.

Using the wrong variable names.

The root module passes its variable var.region to the child module's region input.

5fill in blank

hard

Fill all three blanks to define an output in the root module that references a child module's output.

Terraform

output "[1]" {
  value = module.compute.[2]
  description = "[3]"
}

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Ainstance_id

CID of the compute instance

DCompute instance ID

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatching output names and values.

Leaving description empty or unclear.

The output name and value must match the child module's output. The description explains the output clearly.