- (Exam Topic 1)
Terraform variables and outputs that set the "description" argument will store that description in the state file.

1. A. True
2. B. False

Correct Answer: B
Reference: https://www.terraform.io/docs/language/values/outputs.html

- (Exam Topic 2)
Terraform works well in Windows but a Windows server is required.

1. A. False
2. B. True

Correct Answer: A
You may see this QUESTION NO: in actual exam. Please remember : Terraform does not require GO language to be installed as a prerequisite and it does not require a Windows Server as well.

- (Exam Topic 4)
Your organization has moved to AWS and has manually deployed infrastructure using the console. Recently, a decision has been made to standardize on Terraform for all deployments moving forward.
What can you do to ensure that all existing is managed by Terraform moving forward without interruption to existing services?

1. A. Submit a ticket to AWS and ask them to export the state of all existing resources and use terraform import to import them into the state file.
2. B. Delete the existing resources and recreate them using new a Terraform configuration so Terraform can manage them moving forward.
3. C. Resources that are manually deployed in the AWS console cannot be imported by Terraform.
4. D. Using terraform import, import the existing infrastructure into your Terraform state.

Correct Answer: D
Terraform is able to import existing infrastructure. This allows us take resources we've created by some other means (i.e. via console) and bring it under Terraform management.
This is a great way to slowly transition infrastructure to Terraform.
The terraform import command is used to import existing infrastructure.
To import a resource, first write a resource block for it in our configuration, establishing the name by which it will be known to Terraform.
Example:
resource "aws_instance" "import_example" {
# ...instance configuration...
}
Now terraform import can be run to attach an existing instance to this resource configuration.
$ terraform import aws_instance.import_example i-03efafa258104165f aws_instance.import_example: Importing from ID "i-03efafa258104165f"... aws_instance.import_example: Import complete!
Imported aws_instance (ID: i-03efafa258104165f) aws_instance.import_example: Refreshing state... (ID: i-03efafa258104165f) Import successful!
The resources that were imported are shown above. These resources are now in your Terraform state and will henceforth be managed by Terraform.
This command locates the AWS instance with ID i-03efafa258104165f (which has been created outside
Terraform) and attaches its existing settings, as described by the EC2 API, to the name aws_instance.import_example in the Terraform state.

- (Exam Topic 4)
A module can always refer to all variables declared in its parent module.

1. A. True
2. B. False

Correct Answer: B
Modules do not inherit variables from the parent module. All modules are self-contained units. So you have to explicitly define variables in the child module, and then explicit set these variables in the parent module, when you instantiate the child module.

- (Exam Topic 4)
When using parent/child modules to deploy infrastructure, how would you export a value from one module to import into another module.
For example, a module dynamically deploys an application instance or virtual machine, and you need the IP address in another module to configure a related DNS record in order to reach the newly deployed application.

1. A. Export the value using terraform export and input the value using terraform input.
2. B. Configure the pertinent provider's configuration with a list of possible IP addresses to use.
3. C. Configure an output value in the application module in order to use that value for the DNS module.
4. D. Preconfigure the IP address as a parameter in the DNS module.

Correct Answer: C
Output values are like the return values of a Terraform module, and have several uses:
* A child module can use outputs to expose a subset of its resource attributes to a parent module.
* A root module can use outputs to print certain values in the CLI output after running terraform apply.
* When using remote state, root module outputs can be accessed by other configurations via a terraform_remote_state data source.
https://www.terraform.io/docs/configuration/outputs.html