Why modules enable reusability in Terraform - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a module block in Terraform.

Terraform

module "example" {
  source = [1]
}

Drag options to blanks, or click blank then click option'

A"variable"

B"aws_instance"

C"./modules/example"

D"terraform"

Attempts:

3 left

💡 Hint

Common Mistakes

Using resource type names instead of a path for source.

Leaving source empty or with invalid strings.

The source attribute specifies the path to the module folder, enabling reuse of that module.

2fill in blank

medium

Complete the code to pass a variable to a module.

Terraform

module "example" {
  source = "./modules/example"
  instance_type = [1]
}

Drag options to blanks, or click blank then click option'

A"variable"

B"t2.micro"

Ct2.micro

Dinstance_type

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting quotes around string values.

Using variable names without quotes as values.

Module input variables are assigned values using key = value pairs. The value must be a string if the variable expects a string.

3fill in blank

hard

Fix the error in the module output block.

Terraform

output "instance_id" {
  value = module.example.[1]
}

Drag options to blanks, or click blank then click option'

Ainstance_id

Binstance

Cid

Doutput_id

Attempts:

3 left

💡 Hint

Common Mistakes

Using resource attribute names instead of output names.

Using incorrect or partial output names.

The output value references the module's output variable name, which is instance_id in this case.

4fill in blank

hard

Fill both blanks to define a reusable module with variables and outputs.

Terraform

variable "[1]" {
  type = string
}

output "[2]" {
  value = var.[1]
}

Drag options to blanks, or click blank then click option'

Ainstance_type

Binstance_id

Dinstance_name

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing variable and output names.

Using the same name for both variable and output.

The variable name is instance_type, and the output returns a value named instance_id which could be set elsewhere in the module.

5fill in blank

hard

Fill all three blanks to call a module with variables and use its output.

Terraform

module "web" {
  source = [1]
  instance_type = [2]
}

output "web_id" {
  value = module.web.[3]
}

Drag options to blanks, or click blank then click option'

A"./modules/webserver"

B"t3.small"

Cinstance_id

D"aws_instance"

Attempts:

3 left

💡 Hint

Common Mistakes

Using resource types instead of paths for source.

Omitting quotes around string values.

Referencing wrong output names.

The module source is a local path, the instance type is a string, and the output references the module's output variable instance_id.