What is the primary difference between a precondition and a postcondition in Terraform?

Preconditions are used only for resources; postconditions are used only for data sources.

Preconditions run before the operation; postconditions run after the operation.

Preconditions are used only for outputs; postconditions are used only for variables.

Preconditions run after the operation; postconditions run before the operation.

What should a well-written `error_message` in a custom condition include?

A generic message like "Invalid value"

A clear description of what went wrong and what is expected

The exact line number of the error

The value of the variable that failed

A team is writing a Terraform module that accepts a variable `environment` which must be either `dev`, `staging`, or `prod`. They want to enforce this constraint at plan time. Which approach should they use?

Add a `validation` block inside the variable block with a condition that checks membership in the allowed set.

Use a `lookup` function in the variable's default value to return an error if the value is not in the allowed set.

Add a `precondition` block inside the variable block with a condition that checks membership in the allowed set.

Add a `postcondition` block inside the variable block with a condition that checks membership in the allowed set.

HashiCorp Certified:Terraform Associate

Domain 4Objective 7

4g Validate Configuration Using Custom Conditions TERRAFORM-ASSOCIATE-004 Practice Questions (Page 2)

Part of the Terraform configuration domain, which makes up ~22% of our current practice bank. HashiCorp does not publish an official question count, but from its 60-minute exam (~25–40 total, ~6–9 in this domain), expect 1–1 from this objective — we provide 20 practice questions to prepare you well beyond it. (estimate)

20questions here

4free pages

9concepts

Questions 6–10

6foundation · easy
Which Terraform function is commonly used in a condition expression to check if a value is in a list?
Select an answer first
7foundation · easy
What is the primary difference between a precondition and a postcondition in Terraform?
Select an answer first
8foundation · easy
Which argument is used to specify the condition that must be true for a custom condition to pass?
Select an answer first
9foundation · easy
What should a well-written `error_message` in a custom condition include?
Select an answer first
10application · medium
A team is writing a Terraform module that accepts a variable `environment` which must be either `dev`, `staging`, or `prod`. They want to enforce this constraint at plan time. Which approach should they use?
Select an answer first

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4g Validate Configuration Using Custom Conditions TERRAFORM-ASSOCIATE-004 Practice Questions (Page 2)

Questions 6–10

Which Terraform function is commonly used in a condition expression to check if a value is in a list?

What is the primary difference between a precondition and a postcondition in Terraform?

Which argument is used to specify the condition that must be true for a custom condition to pass?

What should a well-written `error_message` in a custom condition include?

A team is writing a Terraform module that accepts a variable `environment` which must be either `dev`, `staging`, or `prod`. They want to enforce this constraint at plan time. Which approach should they use?

Keep studying — Terraform configuration