An operator runs `terraform apply` with the following commands in sequence: `export TF_VAR_instance_type=t3.micro`, then `terraform apply -var='instance_type=t3.large' -var-file=prod.tfvars`. The `prod.tfvars` file sets `instance_type = "m5.large"`. The variable has no default. What instance type will be used?

`t3.large` because CLI `-var` flags have the highest precedence.

The apply will fail because the variable is assigned multiple times.

`m5.large` because `-var-file` is specified after `-var`.

`t3.micro` because environment variables are set first.

A network team defines a variable to hold subnet configurations. Each subnet needs a name, a CIDR block, and a map of tags. They want to enforce that the CIDR block is a valid IPv4 CIDR and that the name is non-empty. They also need to output the full subnet configuration for use in other modules. Which variable type and validation approach is most appropriate?

`type = map(string)` with values as JSON strings containing name, CIDR, and tags, and a validation block parsing the JSON.

`type = list(object({ name = string, cidr_block = string, tags = map(string) }))` with a validation block checking `cidr_block` format only.

`type = map(object({ name = string, cidr_block = string, tags = map(string) }))` with a validation block checking `cidr_block` format and `name` length.

`type = object({ name = string, cidr_block = string, tags = map(string) })` with a validation block checking `cidr_block` format.

HashiCorp Certified:Terraform Authoring and Operations Professional

Domain 2Objective 5

2e TERRAFORM-AUTHORING-AND-OPERATIONS-PROFESSIONAL Practice Questions (Page 3)

Part of the Develop and troubleshoot dynamic configuration domain, which makes up ~20% of our current practice bank. HashiCorp does not publish an official question count, but from its 240-minute exam (~95–160 total, ~19–32 in this domain), expect 3–5 from this objective — we provide 18 practice questions to prepare you well beyond it. (estimate)

18questions here

4free pages

6concepts

Questions 11–15

11foundation · easy
Which complex type in Terraform represents an unordered collection of unique values of the same type?
Select an answer first
12application · medium
An operator runs `terraform apply` with the following commands in sequence: `export TF_VAR_instance_type=t3.micro`, then `terraform apply -var='instance_type=t3.large' -var-file=prod.tfvars`. The `prod.tfvars` file sets `instance_type = "m5.large"`. The variable has no default. What instance type will be used?
Select an answer first
13foundation · easy
Which complex type in Terraform allows elements of different types within a single collection?
Select an answer first
14application · medium
A network team defines a variable to hold subnet configurations. Each subnet needs a name, a CIDR block, and a map of tags. They want to enforce that the CIDR block is a valid IPv4 CIDR and that the name is non-empty. They also need to output the full subnet configuration for use in other modules. Which variable type and validation approach is most appropriate?
Select an answer first
15foundation · easy
Which command-line flag is used to assign a value to an input variable when running `terraform plan` or `terraform apply`?
Select an answer first

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2e TERRAFORM-AUTHORING-AND-OPERATIONS-PROFESSIONAL Practice Questions (Page 3)

Questions 11–15

Which complex type in Terraform represents an unordered collection of unique values of the same type?

Which complex type in Terraform allows elements of different types within a single collection?

Which command-line flag is used to assign a value to an input variable when running `terraform plan` or `terraform apply`?

Keep studying — Develop and troubleshoot dynamic configuration