HashiCorp Terraform Associate Exam Practice Questions (P. 4)

GPT-4o - Answer

The correct syntax for passing an input variable to a module in Terraform is by prefixing the variable name with `var.`. This establishes that the value being passed is an already defined variable. For instance, if the variable `num_servers` is assigned a value within a module context, it should be correctly integrated as `servers = var.num_servers`. This notation correctly references the value held in the `num_servers` variable outside the module, enabling it to be used within the module under a different alias, in this case, `servers`. Remember, distinguishing between variable definition and usage contexts is crucial for correct Terraform syntax.

GPT-4o - Answer

Terraform is indeed platform-agnostic, meaning it doesn't require a specific operating system or version to function properly. It's compatible with both Windows and Linux and does not necessitate a Server version of Windows. You can run Terraform on regular consumer versions like Windows 10 as long as the binary is installed and correctly configured in the system's PATH. This flexibility helps ensure Terraform can be used in a variety of environments without specific hardware or software dependencies.

GPT-4o - Answer

In Terraform, to extract a list of IDs from a list of objects, two proficient methods exist. The notation `var.list[*].id` efficiently utilizes the splat operator, which gathers the id attributes from all objects in the list, thereby producing a straightforward list of IDs. Similarly, the list comprehension `[for o in var.list : o.id]` methodically iterates over each object in the list and extracts the id attribute. Both methods are valid and deliver a similar result: a list of all IDs present in the objects of `var.list`.