Beginner Terraform test (Beginner)

Sample questions

5 sample questions from the Beginner Terraform test, with the answers. Samples are taken out of the live test, so you will not meet these when you sit it.

1. What will happen when the following Terraform code is executed? `resource "aws_s3_bucket" "example" { value = "test" }`

   1. The resource will be created with the name 'example' and the attribute 'value' set to 'test' and the provider 'aws' will be configured with region 'ap-south-1'.
   2. The resource will be created with the name 'example' and the attribute 'value' set to 'test' and the provider 'aws' will be configured with region 'us-east-1'.
   3. The resource will not be created because the provider is not configured.
   4. The resource will be created with the name 'example' and the attribute 'value' set to 'test'.

   Answer: D. The resource will be created with the name 'example' and the attribute 'value' set to 'test'.

   The resource block `resource "aws_s3_bucket" "example" { value = "test" }` correctly creates an AWS S3 bucket with the local name 'example' and the attribute 'value' set to 'test'. The other options contain syntax errors or incorrect usage of HCL.

2. Which of the following correctly uses HCL string interpolation to construct a bucket name for an AWS S3 bucket using a variable named 'env'?

   1. aws_s3_bucket.example.bucket = var.env + "-logs"
   2. aws_s3_bucket.example.bucket = var.env.logs
   3. aws_s3_bucket.example.bucket = var.env - logs
   4. aws_s3_bucket.example.bucket = "${var.env}-logs"

   Answer: D. aws_s3_bucket.example.bucket = "${var.env}-logs"

   In Terraform HCL, string interpolation is done using the ${} syntax. This allows variables to be inserted into strings, making it possible to dynamically construct values such as resource names or other attributes. The correct option demonstrates this with the use of ${var.env} inside the string.

3. Which of the following statements correctly describes the difference between the provider block and the required_providers block in Terraform?

   1. The provider block is used to configure the endpoint details for the provider, such as region or authentication credentials, while the required_providers block is used to declare the provider and its version constraints.
   2. The provider block is used to declare the provider and its version constraints, while the required_providers block is used to configure the endpoint details for the provider, such as region or authentication credentials.
   3. Both the provider block and the required_providers block are used to configure the endpoint details for the provider, such as region or authentication credentials.
   4. Both the provider block and the required_providers block are used to declare the provider and its version constraints.

   Answer: A. The provider block is used to configure the endpoint details for the provider, such as region or authentication credentials, while the required_providers block is used to declare the provider and its version constraints.

   The provider block is used to configure the endpoint details for the provider, such as region or authentication credentials, while the required_providers block is used to declare the provider and its version constraints. The required_providers block does not contain endpoint configuration details. The provider block is used to configure the provider's endpoint details, and the required_providers block is used to declare the provider and its version constraints.

4. Which of the following is the correct HCL syntax for defining a list containing the elements 'apple', 'banana', and 'cherry'?

   1. list = (apple, banana, cherry)
   2. list = { apple, banana, cherry }
   3. list = ["apple", "banana", "cherry"]
   4. list = apple, banana, cherry

   Answer: C. list = ["apple", "banana", "cherry"]

   In HCL, a list is defined using square brackets [ ] with elements separated by commas. The correct syntax for a list is to enclose the elements in square brackets and use quotes around string values. The other options either use incorrect syntax or do not represent a list structure.

5. Which of the following is a best practice for Terraform state file backup?

   1. Terraform state files should only be backed up after applying changes to the infrastructure.
   2. Terraform state files should be backed up regularly to prevent data loss in case of accidental deletion or corruption.
   3. Terraform state files should never be backed up as they are automatically managed by Terraform.
   4. Terraform state files should be backed up only if the infrastructure is complex.

   Answer: B. Terraform state files should be backed up regularly to prevent data loss in case of accidental deletion or corruption.

   State files contain critical information about the infrastructure managed by Terraform. Backing them up regularly ensures that if the state file is lost or corrupted, it can be recovered, minimizing the risk of infrastructure misconfiguration or data loss. Other options may be misleading or not directly related to the best practice of state file backup.