- (Exam Topic 4)
What does terraform destroy do?

Correct Answer:A
The terraform destroy command terminates resources managed by your Terraform project. This command is the inverse of terraform apply in that it terminates all the resources specified in your Terraform state. It does not destroy resources running elsewhere that are not managed by the current Terraform project. https://learn.hashicorp.com/tutorials/terraform/aws-destroy

- (Exam Topic 3)
Which of the below options is the equivalent Terraform 0.12 version of the snippet which is written in Terraform 0.11?
"${var.instance_id}"

Correct Answer:C

- (Exam Topic 4)
Terraform will sync all resources in state by default for every plan and apply, hence for larger infrastructures this can slow down terraform plan and terraform apply commands?

Correct Answer:B
For small infrastructures, Terraform can query your providers and sync the latest attributes from all your resources. This is the default behavior of Terraform: for every plan and apply, Terraform will sync all resources in your state.
For larger infrastructures, querying every resource is too slow. Many cloud providers do not provide APIs to query multiple resources at once, and the round trip time for each resource is hundreds of milliseconds. On top of this, cloud providers almost always have API rate limiting so Terraform can only request a certain number of resources in a period of time. Larger users of Terraform make heavy use of the -refresh=false flag as well as the -target flag in order to work around this. In these scenarios, the cached state is treated as the record of truth.
https://www.terraform.io/docs/state/purpose.html

- (Exam Topic 3)
Command terraform refresh will update state file?

Correct Answer:B
The terraform refresh command is used to reconcile the state Terraform knows about (via its state file) with the real-world infrastructure. This can be used to detect any drift from the last-known state, and to update the state file.
This does not modify infrastructure, but does modify the state file. If the state is changed, this may cause changes to occur during the next plan or apply.
https://www.terraform.io/docs/commands/refresh.html

- (Exam Topic 2)
Workspaces in Terraform provides similar functionality in the open-source, Terraform Cloud, and Enterprise versions of Terraform.

Correct Answer:B
https://www.terraform.io/docs/cloud/migrate/workspaces.html
Workspaces, managed with the terraform workspace command, aren't the same thing as Terraform Cloud's workspaces. Terraform Cloud workspaces act more like completely separate working directories; CLI workspaces are just alternate state files.

- (Exam Topic 4)
As a developer, you want to ensure your plugins are up to date with the latest versions. Which Terraform command should you use?

Correct Answer:D