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Use the core Terraform workflow practice questions

Practise HashiCorp Terraform Associate TF-003 Use the core Terraform workflow practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.

Courseiva uses original exam-style practice questions designed for learning and revision. The goal is to understand the concepts, recognise exam patterns, and improve through explanations — not memorise copied exam dumps.

Reviewed byJohnson Ajibi· MSc IT Security
20 questionsDomain: Use the core Terraform workflow
Practice 10 questionsBrowse domain →

What the exam tests

What to know about Use the core Terraform workflow

Use the core Terraform workflow questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

Watch out for

Common Use the core Terraform workflow exam traps

  • ▸Answering from memory before reading the full scenario.
  • ▸Missing a constraint such as cost, availability, security, scope or command context.
  • ▸Choosing a broad answer when the question asks for the most specific fix.
  • ▸Ignoring why the wrong options are tempting.

Practice set

Use the core Terraform workflow questions

20 questions · select your answer, then reveal the explanation

Question 1easymultiple choice
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A team uses Terraform to manage infrastructure. After running 'terraform apply', a developer notices that a new security group rule was added, but then immediately removed. What is the most likely cause?

Question 2mediummultiple choice
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During a 'terraform plan', you see the following output: 'Plan: 1 to add, 2 to change, 0 to destroy.' However, after running 'terraform apply', the actual number of resources changed is different. What is the most likely reason?

Question 3hardmultiple choice
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A DevOps engineer is troubleshooting a failed 'terraform apply'. The error message says: 'Error: Error applying IAM policy: The policy failed validation'. The IAM policy is defined using HCL in a JSON-encoded string. What is the most efficient way to debug this issue?

Question 4easymultiple choice
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A team wants to ensure that all Terraform runs are recorded for audit purposes. Which practice should they implement?

Question 5mediummulti select
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Which TWO actions are part of the core Terraform workflow? (Choose two.)

Question 6hardmulti select
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Which THREE of the following are valid reasons to use 'terraform refresh'? (Choose three.)

Question 7hardmultiple choice
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You are a DevOps engineer at a large e-commerce company. The infrastructure team uses Terraform to manage AWS resources across multiple accounts. Recently, they introduced a new module that creates an S3 bucket with a bucket policy. The module is used in several environments (dev, staging, prod). After merging a pull request that updates the bucket policy to grant cross-account access to a new partner account, the 'terraform apply' in the dev environment fails with: 'Error: Error putting S3 policy: AccessDenied: Access Denied'. The team is using a remote backend (S3) with DynamoDB locking. The CI/CD pipeline runs as an IAM role with permissions to manage infrastructure. The module uses 'aws_iam_policy_document' data source to construct the policy. The error occurs only in dev, not staging or prod. What is the most likely cause and the correct course of action?

Question 8easymultiple choice
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A team is using Terraform for infrastructure as code. They want to ensure that the state file is stored securely and can be accessed by multiple team members. Which backend type should they use?

Question 9mediummulti select
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Which TWO of the following are valid steps in the core Terraform workflow?

Question 10hardmultiple choice
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An operator runs terraform apply and receives the exhibit error. The instance was created but Terraform reports a failure. What is the most likely cause?

Exhibit

Refer to the exhibit.

```
Error: Error applying plan!

  on main.tf line 12, in resource "aws_instance" "web":
  12:   ami = "ami-0c55b159cbfafe1f0"

The resource "aws_instance" "web" was successfully created but failed to initialize after creation. The following errors may help:

Error: timeout - last error: SSH connection failed (unreachable)
```
Question 11mediummultiple choice
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A company uses Terraform to manage infrastructure in multiple AWS accounts. An engineer runs terraform plan and sees that a security group rule will be updated, but the change is not intended. The engineer wants to understand why Terraform is proposing the change without affecting other resources. Which approach should the engineer take to troubleshoot?

Question 12hardmulti select
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A team is adopting Terraform for infrastructure deployment. They want to ensure that the core workflow (write, plan, apply) is followed effectively. Which two practices should they adopt? (Choose two.)

Question 13easymultiple choice
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What is the most likely cause of this error?

Exhibit

Refer to the exhibit.

```hcl
resource "aws_instance" "web" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = "t2.micro"
}
```

An engineer runs `terraform apply` with this configuration and receives the following error:

```
Error: Error launching source instance: UnauthorizedOperation: You are not authorized to perform this operation.
```
Question 14mediummulti select
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Which three of the following are required steps in the core Terraform workflow for managing infrastructure? (Choose three.)

Question 15mediummulti select
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Which of the following statements about the core Terraform workflow (Write, Plan, Apply) are correct? (Choose all that apply. There are four correct answers.)

Question 16mediumdrag order
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Drag and drop the steps to import existing infrastructure into Terraform state in the correct order.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps
Order
1Step 1
2Step 2
3Step 3
4Step 4
5Step 5
Question 17mediummatching
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Match each Terraform workflow stage to its description.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts
Matches

Author infrastructure as code configuration

Preview changes before applying

Execute the planned changes

Tear down managed infrastructure

Restructure configuration without changing external resources

Question 18easymultiple choice
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A user runs 'terraform plan' and the output includes a change that adds a new resource. However, the user expected the change to modify an existing resource. What is the most likely cause?

Question 19mediummultiple choice
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During 'terraform apply', a user receives an error: 'Error: Error creating resource: Resource already exists'. The resource does not appear in the Terraform state. What is the most likely cause?

Question 20hardmultiple choice
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A team is using Terraform with multiple environments (dev, staging, prod) and wants to use separate state files. They are considering workspaces. A senior engineer suggests using separate directory structures instead of workspaces for prod. What is the strongest reason for this recommendation?

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Frequently asked questions

What does the TF-003 exam test about Use the core Terraform workflow?
Use the core Terraform workflow questions test whether you can apply the concept in context, not just recognise a definition.
How should I use these practice questions?
Select your answer before revealing the explanation. Then read why each option is right or wrong — this active recall approach builds retention far faster than re-reading notes.
Can I practise just Use the core Terraform workflow questions in a focused session?
Yes — the session launcher on this page draws every question from the Use the core Terraform workflow domain. Use a 10-question session first to gauge your baseline, then move to 20 or 30 once the weak spots are clear.
Where can I practise other TF-003 topics?
Use the topic links above to move to related areas, or go back to the TF-003 question bank to see all topics.
Are these real exam questions or dumps?
These are original practice questions written to test the same concepts the TF-003 exam covers. They are not copied from any real exam or dump site.