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Terraform vs CloudFormation vs Pulumi - Practice Questions

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Challenge - 5 Problems
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🧠 Conceptual
intermediate
2:00remaining
Key Difference in State Management

Which tool manages infrastructure state locally by default, requiring explicit remote backend configuration for team collaboration?

ATerraform
BCloudFormation
CPulumi
DAll manage state remotely by default
Attempts:
2 left
💡 Hint

Think about which tool uses a state file that can be stored locally or remotely.

❓ Architecture
intermediate
2:00remaining
Infrastructure as Code Language Support

Which tool allows you to write infrastructure code using general-purpose programming languages like TypeScript, Python, or Go?

ATerraform
BNone support general-purpose languages
CCloudFormation
DPulumi
Attempts:
2 left
💡 Hint

Consider which tool integrates with common programming languages for infrastructure definitions.

❓ service_behavior
advanced
2:00remaining
CloudFormation Stack Update Behavior

What happens if you update a CloudFormation stack with a template that removes a resource without specifying a deletion policy?

AThe resource remains unchanged in the cloud environment
BThe resource is deleted from the cloud environment
CCloudFormation throws an error and refuses the update
DThe resource is backed up automatically before deletion
Attempts:
2 left
💡 Hint

Think about default behavior when a resource is removed from the template.

❓ security
advanced
2:00remaining
Secret Management in Terraform vs Pulumi

Which statement correctly describes secret handling differences between Terraform and Pulumi?

ATerraform encrypts secrets in state files by default, Pulumi stores secrets in plain text
BBoth Terraform and Pulumi store secrets unencrypted by default
CPulumi encrypts secrets in its state backend by default, Terraform requires manual encryption setup
DNeither Terraform nor Pulumi support secret management
Attempts:
2 left
💡 Hint

Consider which tool has built-in secret encryption in its backend.

✅ Best Practice
expert
3:00remaining
Choosing the Right Tool for Multi-Cloud Infrastructure

You need to manage infrastructure across AWS, Azure, and Google Cloud with a single codebase using familiar programming languages. Which tool is best suited for this requirement?

APulumi
BTerraform
CCloudFormation
DUse separate CloudFormation templates for each cloud
Attempts:
2 left
💡 Hint

Think about multi-cloud support and language flexibility.

Practice

(1/5)
1. Which infrastructure as code tool is designed to work only with AWS and uses JSON or YAML for its templates?
easy
A. CloudFormation
B. Terraform
C. Pulumi
D. Ansible

Solution

  1. Step 1: Identify AWS-only tool

    CloudFormation is the only tool among the options that works exclusively with AWS.

  2. Step 2: Check template language

    CloudFormation uses JSON or YAML for its templates, unlike Terraform (HCL) or Pulumi (programming languages).

  3. Final Answer:

    CloudFormation -> Option A

  4. Quick Check:

    AWS-only + JSON/YAML = CloudFormation [OK]
Hint: AWS-only and JSON/YAML means CloudFormation [OK]
Common Mistakes:
  • Confusing Terraform as AWS-only
  • Thinking Pulumi uses JSON/YAML
  • Selecting Ansible which is not IaC focused
2. Which of the following is the correct way to describe Pulumi's approach to infrastructure as code?
easy
A. Uses general-purpose programming languages like JavaScript or Python
B. Uses JSON or YAML templates tightly integrated with AWS
C. Uses shell scripts for provisioning
D. Uses a domain-specific language called HCL

Solution

  1. Step 1: Identify Pulumi's language style

    Pulumi uses real programming languages such as JavaScript, Python, Go, or C# for defining infrastructure.

  2. Step 2: Eliminate other options

    HCL is Terraform's language, JSON/YAML with AWS is CloudFormation, and shell scripts are not Pulumi's approach.

  3. Final Answer:

    Uses general-purpose programming languages like JavaScript or Python -> Option A

  4. Quick Check:

    Pulumi = real programming languages [OK]
Hint: Pulumi uses real programming languages, not templates [OK]
Common Mistakes:
  • Confusing Pulumi with Terraform's HCL
  • Thinking Pulumi uses JSON/YAML
  • Assuming Pulumi uses shell scripts
3. Given the following statements, which tool supports multiple cloud providers and uses a simple declarative language called HCL? 
1. Supports AWS, Azure, GCP
2. Uses JSON or YAML
3. Uses HCL
4. Uses programming languages like TypeScript
medium
A. Chef
B. Pulumi
C. CloudFormation
D. Terraform

Solution

  1. Step 1: Match multi-cloud support

    Terraform supports multiple clouds like AWS, Azure, and GCP.

  2. Step 2: Match language used

    Terraform uses HCL, a simple declarative language. JSON/YAML is CloudFormation, programming languages like TypeScript is Pulumi.

  3. Final Answer:

    Terraform -> Option D

  4. Quick Check:

    Multi-cloud + HCL = Terraform [OK]
Hint: Multi-cloud + HCL means Terraform [OK]
Common Mistakes:
  • Choosing Pulumi for HCL language
  • Selecting CloudFormation for multi-cloud
  • Confusing Chef with IaC tools
4. You wrote a Pulumi program in Python but it fails to deploy because it uses AWS-specific resource names not supported by Azure. What is the main error here?
medium
A. Terraform should be used instead of Pulumi for AWS
B. Pulumi does not support Python as a language
C. Using AWS resource names in a multi-cloud Pulumi program without adjusting for Azure
D. CloudFormation templates are required for Azure deployments

Solution

  1. Step 1: Identify the cause of failure

    The Pulumi program uses AWS resource names but tries to deploy on Azure, causing incompatibility.

  2. Step 2: Understand Pulumi's multi-cloud nature

    Pulumi supports multiple clouds but resource names and APIs differ per cloud and must be adjusted accordingly.

  3. Final Answer:

    Using AWS resource names in a multi-cloud Pulumi program without adjusting for Azure -> Option C

  4. Quick Check:

    Cloud-specific resource names must match target cloud [OK]
Hint: Match resource names to target cloud in Pulumi [OK]
Common Mistakes:
  • Thinking Pulumi can't use Python
  • Believing Terraform is required for AWS
  • Assuming CloudFormation works on Azure
5. You want to manage infrastructure across AWS and Azure using a single tool. You prefer writing code in TypeScript and want to reuse existing programming skills. Which tool should you choose and why?
hard
A. CloudFormation, because it is tightly integrated with AWS
B. Pulumi, because it supports multiple clouds and uses real programming languages like TypeScript
C. Terraform, because it supports multiple clouds and uses HCL
D. Ansible, because it uses YAML for automation

Solution

  1. Step 1: Identify multi-cloud support with TypeScript

    Pulumi supports multiple clouds and allows writing infrastructure code in TypeScript, matching the requirement.

  2. Step 2: Compare other tools

    Terraform supports multi-cloud but uses HCL, not TypeScript. CloudFormation is AWS-only. Ansible is for automation, not primarily IaC with TypeScript.

  3. Final Answer:

    Pulumi, because it supports multiple clouds and uses real programming languages like TypeScript -> Option B

  4. Quick Check:

    Multi-cloud + TypeScript = Pulumi [OK]
Hint: Multi-cloud + TypeScript means Pulumi [OK]
Common Mistakes:
  • Choosing Terraform for TypeScript support
  • Selecting CloudFormation for multi-cloud
  • Confusing Ansible with IaC tools