Why variables make configurations reusable in Terraform - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a variable for the AWS region.

Terraform

variable "region" {
  type = [1]
}

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Anumber

Bstring

Cbool

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using number or bool as the variable type for region.

The variable type for AWS region should be string because regions are text values.

2fill in blank

medium

Complete the code to assign a default value to the variable.

Terraform

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

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A"t2.micro"

Bt2.micro

Ct2_micro

Dmicro

Attempts:

3 left

💡 Hint

Common Mistakes

Not using quotes around the default string value.

The default value must be a string literal, so it needs quotes: "t2.micro".

3fill in blank

hard

Fix the error in referencing the variable in the resource block.

Terraform

resource "aws_instance" "example" {
  ami           = "ami-123456"
  instance_type = [1]
}

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Avariable.instance_type

Binstance_type

Cvar.instance_type

Dvar[instance_type]

Attempts:

3 left

💡 Hint

Common Mistakes

Using the variable name without var. prefix.

Using incorrect syntax like variable.instance_type.

To use a variable in Terraform, prefix it with var. like var.instance_type.

4fill in blank

hard

Fill both blanks to define a variable with a description and a default value.

Terraform

variable "environment" {
  description = [1]
  default     = [2]
}

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A"The deployment environment"

Bproduction

C"production"

D"Deployment environment"

Attempts:

3 left

💡 Hint

Common Mistakes

Not using quotes for description or default value.

Using unquoted default values.

The description must be a quoted string, and the default value must also be a quoted string.

5fill in blank

hard

Fill all three blanks to use variables for region, instance type, and count in the resource.

Terraform

resource "aws_instance" "web" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = [1]
  count         = [2]
  availability_zone = [3]
}

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

Avar.instance_type

Bvar.count

Cvar.region

Dvar.availability_zone

Attempts:

3 left

💡 Hint

Common Mistakes

Using var.region for availability zone.

Not using var. prefix.

Use var.instance_type for instance type, var.count for count, and var.availability_zone for availability zone variables.