Conditional expressions (ternary) in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assign the value based on the condition.

Terraform

variable "environment" {
  default = "production"
}

output "instance_type" {
  value = var.environment == "production" ? [1] : "t2.micro"
}

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

A"t3.large"

B"t2.large"

C"t3.nano"

D"t2.micro"

Attempts:

3 left

💡 Hint

Common Mistakes

Using the false value in the true condition position.

Forgetting to quote the instance type strings.

The ternary expression checks if the environment is "production". If true, it assigns "t2.large"; otherwise, "t2.micro".

2fill in blank

medium

Complete the code to set the bucket versioning based on the environment.

Terraform

resource "aws_s3_bucket" "example" {
  bucket = "my-app-bucket"
  versioning {
    enabled = var.environment == "production" ? [1] : false
  }
}

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

Atrue

Bfalse

C"true"

D"false"

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings "true" or "false" instead of booleans.

Setting the wrong boolean for the production environment.

The versioning enabled attribute expects a boolean. If environment is "production", it should be true; otherwise false.

3fill in blank

hard

Fix the error in the conditional expression for setting the instance count.

Terraform

resource "aws_instance" "web" {
  count = var.environment == "production" ? [1] : 1
  ami           = "ami-123456"
  instance_type = "t2.micro"
}

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

A3

B"3"

C"1"

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string "3" instead of number 3.

Using the wrong number for production count.

The count attribute expects a number, not a string. So use 3 without quotes for production.

4fill in blank

hard

Fill both blanks to set the environment tag based on the environment variable.

Terraform

resource "aws_instance" "app" {
  ami           = "ami-654321"
  instance_type = "t2.medium"

  tags = {
    Environment = var.environment [1] "production" ? [2] : "dev"
  }
}

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

A==

B!=

C"production"

Attempts:

3 left

💡 Hint

Common Mistakes

Using != instead of ==.

Using the wrong string value for the true condition.

The tag Environment should be set to "production" if var.environment equals "production", otherwise "dev".

5fill in blank

hard

Fill all three blanks to create a conditional expression that sets the instance size and count.

Terraform

resource "aws_instance" "db" {
  instance_type = var.environment [1] "production" ? [2] : "t2.small"
  count         = var.environment [3] "production" ? 2 : 1
  ami           = "ami-789012"
}

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

A==

B"m5.large"

C!=

D"t2.medium"

Attempts:

3 left

💡 Hint

Common Mistakes

Using != instead of == for conditions.

Mixing instance types or counts incorrectly.

The instance_type is "m5.large" if environment is "production", else "t2.small". The count is 2 if production, else 1. Both conditions use ==.