What is the purpose of a `dynamic` block in Terraform?

To generate repeated nested blocks based on a collection

To conditionally include a single nested block

To override the behavior of a resource at runtime

To define a new resource type dynamically

A team manages infrastructure for multiple environments (dev, staging, prod) using a single Terraform configuration. Each environment requires a different number of web server instances, and the instance count is stored in a variable named `instance_count`. The team wants to generate a list of unique hostnames for all instances in the format `web- - `, where ` ` is the environment name stored in a variable named `environment`. Which expression correctly produces this list?

`range(var.instance_count, "web-${var.environment}-${i}")`

`[for i in range(var.instance_count) : "web-${var.environment}-${i}"]`

`["web-${var.environment}-${range(var.instance_count)}"]`

`[for i in var.instance_count : "web-${var.environment}-${i}"]`

HashiCorp Certified:Terraform Associate

Domain 4Objective 5

4e Write Dynamic Configuration Using Expressions and Functions 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 10 practice questions to prepare you well beyond it. (estimate)

10questions here

2free pages

6concepts

Questions 6–10

6foundation · easy
In a Terraform configuration, you have a variable `instance_count` defined as `variable "instance_count" { type = number }`. Which expression correctly references this variable's value?
Select an answer first
7foundation · easy
You have a list of strings `subnet_ids` and need to get the first element. Which built-in Terraform function should you use?
Select an answer first
8foundation · easy
What is the purpose of a `dynamic` block in Terraform?
Select an answer first
9application · medium
A team manages infrastructure for multiple environments (dev, staging, prod) using a single Terraform configuration. Each environment requires a different number of web server instances, and the instance count is stored in a variable named `instance_count`. The team wants to generate a list of unique hostnames for all instances in the format `web-<env>-<index>`, where `<env>` is the environment name stored in a variable named `environment`. Which expression correctly produces this list?
Select an answer first
10foundation · easy
You have a map `tags` with keys `Name` and `Environment`. Which function retrieves the value for the `Environment` key?
Select an answer first

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4e Write Dynamic Configuration Using Expressions and Functions TERRAFORM-ASSOCIATE-004 Practice Questions (Page 2)

Questions 6–10

In a Terraform configuration, you have a variable `instance_count` defined as `variable "instance_count" { type = number }`. Which expression correctly references this variable's value?

You have a list of strings `subnet_ids` and need to get the first element. Which built-in Terraform function should you use?

What is the purpose of a `dynamic` block in Terraform?

You have a map `tags` with keys `Name` and `Environment`. Which function retrieves the value for the `Environment` key?

Keep studying — Terraform configuration