2a TERRAFORM-AUTHORING-AND-OPERATIONS-PROFESSIONAL Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A team manages a Kubernetes cluster with Terraform. They have a module that creates a namespace and then applies a Helm release. The Helm release depends on the namespace being active. The team wants to verify that the namespace is in the `Active` phase before the Helm release is applied. Which configuration should they use?

   • AAdd a `precondition` block to the Helm release resource that checks the namespace's status from a data source.
   • BAdd a `postcondition` block to the Helm release resource that checks the namespace's status after the release is applied.
   • CAdd a `validation` block to the Helm release resource that checks the namespace's status.
   • DUse a `depends_on` argument to ensure the namespace is created before the Helm release.
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2. 2foundation · easy

   Which of the following is a valid use of a variable validation block?

   • ASetting the variable's description
   • BDefining the default value of a variable
   • CEnsuring a string variable matches a specific regex pattern
   • DDeclaring the variable's type
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4. 3application · medium

   A Terraform configuration outputs the public IP address of a newly created VM. The team wants to ensure that the output value is a valid IPv4 address before it is used by downstream automation. If the value is invalid, they want the apply to fail with a descriptive error. Which configuration should they use?

   • AAdd a `postcondition` block to the output that checks the value against a regex pattern for IPv4 addresses.
   • BUse a `lookup` function to check the value and return an error if it is invalid.
   • CAdd a `precondition` block to the output that checks the value before it is computed.
   • DAdd a `validation` block to the output that checks the value.
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5. 4application · medium

   A platform team defines a reusable module that provisions Azure virtual machines. The module accepts a variable `vm_size` that must be one of the allowed sizes from a fixed list. The team wants to fail fast during `terraform plan` with a clear message if an unsupported size is supplied. Which configuration should they use?

   • AAdd a `precondition` block inside the `variable "vm_size"` block with a `condition` that checks membership in the allowed list.
   • BAdd a `postcondition` block inside the `variable "vm_size"` block to check the value after assignment.
   • CUse a `type` constraint of `list(string)` and rely on Terraform's built-in type checking to reject invalid sizes.
   • DAdd a `validation` block inside the `variable "vm_size"` block with a `condition` that checks membership in the allowed list and an `error_message` explaining the allowed values.
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6. 5foundation · easy

   In a variable validation block, which two arguments are required?

   • Atype and default
   • Bcondition and error_message
   • Cerror_message and nullable
   • Dcondition and description
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