26 Correct Answer: C
Manually unlock the state for the defined configuration.
Reference:
https://www.terraform.io/docs/cli/commands/force-unlock.html

27 Correct Answer: A

28 Correct Answer: A

29 Correct Answer: A
The terraform validate command validates the syntax and arguments of the Terraform configuration files.
Reference:
https://www.terraform.io/docs/cli/code/index.html

30 Correct Answer: CD
Reference:
https://www.terraform.io/docs/cli/commands/state/rm.html