Why complex types matter in Terraform - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a variable with a complex type list of strings.

Terraform

variable "example_list" {
  type = [1]
}

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

Alist(string)

Bmap(string)

Cstring

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'string' instead of 'list(string)' for a list variable.

Using 'map(string)' which expects key-value pairs, not a list.

The variable type list(string) defines a list where each item is a string. This is a common complex type in Terraform.

2fill in blank

medium

Complete the code to define a variable with a map of numbers.

Terraform

variable "example_map" {
  type = [1]
}

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

Astring

Blist(number)

Cmap(number)

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'list(number)' which is a list, not a map.

Using 'number' which is a single number, not a map.

The type map(number) defines a map where each key maps to a number value.

3fill in blank

hard

Fix the error in the variable type definition for a set of strings.

Terraform

variable "example_set" {
  type = [1]
}

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

Aset(string)

Blist(string)

Cmap(string)

Dstring

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'list(string)' which allows duplicates and is ordered.

Using 'map(string)' which expects key-value pairs.

The correct type for a set of strings is set(string). It represents an unordered collection of unique strings.

4fill in blank

hard

Fill both blanks to define an object type with two attributes: name (string) and count (number).

Terraform

variable "example_object" {
  type = object({
    name = [1],
    count = [2]
  })
}

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

Astring

Bnumber

Cbool

Dlist(string)

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'bool' or 'list(string)' for these attributes incorrectly.

Mixing up attribute types.

The object type requires attribute types. Here, name is a string and count is a number.

5fill in blank

hard

Fill all three blanks to define a complex variable: a list of objects with attributes id (number), enabled (bool), and tags (list of strings).

Terraform

variable "complex_var" {
  type = list(object({
    id = [1],
    enabled = [2],
    tags = [3]
  }))
}

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

Astring

Bbool

Clist(string)

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing 'bool' with 'string' or 'number'.

Using 'string' instead of 'list(string)' for tags.

The object attributes are: id as number, enabled as bool, and tags as list of strings.