Bicep as ARM simplification in Azure - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Bicep in the context of Azure infrastructure?

Bicep is a simple language that helps you write Azure infrastructure code more easily than using raw ARM templates.

beginner

How does Bicep improve ARM template authoring?

Bicep uses simpler syntax, removes JSON complexity, and provides better readability and modularity compared to ARM templates.

intermediate

What happens to Bicep code before deployment in Azure?

Bicep code is automatically converted into ARM JSON templates before deployment, so Azure understands it.

intermediate

Why is modularity easier in Bicep compared to ARM templates?

Bicep supports modules that let you split infrastructure into reusable parts, making code easier to manage and update.

beginner

Name one key benefit of using Bicep over ARM templates for beginners.

Bicep's simpler syntax and less cluttered code make it easier for beginners to learn and write infrastructure as code.

What language does Bicep simplify?

A ARM JSON templates

B PowerShell scripts

C Azure CLI commands

D Terraform HCL

Bicep is designed to simplify authoring ARM JSON templates.

Before deploying, Bicep code is converted into what format?

A PowerShell script

B YAML file

C ARM JSON template

D Azure CLI command

Bicep code compiles into ARM JSON templates for deployment.

Which feature makes Bicep code easier to reuse?

A Modules

B Variables

C Parameters

D Outputs

Modules allow splitting Bicep code into reusable parts.

Bicep syntax is designed to be:

A Identical to ARM JSON

B More complex than ARM JSON

C Only usable in PowerShell

D Simpler and more readable than ARM JSON

Bicep uses simpler syntax to improve readability.

Who benefits most from using Bicep?

A Users managing Azure manually

B Beginners learning Azure infrastructure as code

C Developers writing PowerShell scripts

D Only Azure CLI experts

Bicep is especially helpful for beginners learning infrastructure as code.

Explain how Bicep simplifies writing Azure infrastructure code compared to ARM templates.

Think about how Bicep changes the way you write and organize code.

Describe the deployment process of Bicep code in Azure.

Focus on what happens behind the scenes before deployment.

Practice

1. What is the main purpose of Bicep in Azure infrastructure management?

easy

A. To monitor Azure resources in real-time

B. To replace Azure CLI commands

C. To create virtual machines automatically

D. To simplify writing and managing Azure resource templates

Solution

1. Step 1: Understand Bicep's role

   Bicep is designed to simplify the process of writing infrastructure as code for Azure by providing a cleaner syntax than raw ARM templates.

2. Step 2: Compare with other options

   Options A, B, and C describe other Azure tools or features, not Bicep's main purpose.

3. Final Answer:

   To simplify writing and managing Azure resource templates -> Option D

4. Quick Check:

   Bicep simplifies Azure templates = D [OK]

Hint: Bicep makes Azure templates easier to write and read [OK]

Common Mistakes:

• Confusing Bicep with Azure CLI
• Thinking Bicep creates resources automatically
• Assuming Bicep monitors resources

2. Which of the following is the correct way to declare a string parameter named location in a Bicep file?

easy

A. param location string

B. parameter location = 'string'

C. var location string

D. resource location string

Solution

1. Step 1: Recall Bicep parameter syntax

   In Bicep, parameters are declared using the keyword param followed by the name and type, e.g., param location string.

2. Step 2: Eliminate incorrect options

   parameter location = 'string' uses incorrect syntax; var location string uses var which is for variables, not parameters; resource location string uses resource which is for resources.

3. Final Answer:

   param location string -> Option A

4. Quick Check:

   Parameter declaration = param name type [OK]

Hint: Use 'param' keyword for parameters in Bicep [OK]

Common Mistakes:

• Using 'var' instead of 'param' for parameters
• Confusing resource declaration with parameter
• Incorrect assignment syntax for parameters

3. Given this Bicep snippet:

param storageAccountName string = 'mystorage'
resource storageAccount 'Microsoft.Storage/storageAccounts@2021-04-01' = {
  name: storageAccountName
  location: 'eastus'
  kind: 'StorageV2'
  sku: {
    name: 'Standard_LRS'
  }
}

What will be the name of the deployed storage account?

medium

A. mystorage

B. storageAccountName

C. Standard_LRS

D. eastus

Solution

1. Step 1: Identify the parameter value

   The parameter storageAccountName is set to the string 'mystorage'.

2. Step 2: Check resource name assignment

   The resource's name property uses the parameter storageAccountName, so the deployed storage account will be named 'mystorage'.

3. Final Answer:

   mystorage -> Option A

4. Quick Check:

   Resource name = parameter value 'mystorage' [OK]

Hint: Resource name uses parameter value directly [OK]

Common Mistakes:

• Confusing parameter name with its value
• Choosing SKU or location as name
• Assuming default resource name

4. You wrote this Bicep code:

param location string
var location = 'westus'
resource vm 'Microsoft.Compute/virtualMachines@2022-03-01' = {
  name: 'myVM'
  location: location
}

What is the error in this code?

medium

A. Missing SKU property in the resource

B. Resource name must be a parameter, not a string

C. Variable and parameter have the same name causing conflict

D. Location property cannot be a variable

Solution

1. Step 1: Identify naming conflict

   Both a parameter and a variable are named location, which causes a conflict in Bicep because names must be unique in the same scope.

2. Step 2: Check other options

   Resource name can be a string literal; SKU is not mandatory for all resources; location can be a variable if no conflict exists.

3. Final Answer:

   Variable and parameter have the same name causing conflict -> Option C

4. Quick Check:

   Duplicate names cause errors in Bicep [OK]

Hint: Avoid using same name for param and var [OK]

Common Mistakes:

• Thinking resource name must be a parameter
• Assuming SKU is always required
• Believing location cannot be variable

5. You want to deploy two storage accounts in different locations using Bicep. Which approach correctly uses a loop to create these resources?

hard

A. param locations string = 'eastus,westus'
resource storageAccounts 'Microsoft.Storage/storageAccounts@2021-04-01' = {
name: 'storage'
location: locations
kind: 'StorageV2'
sku: { name: 'Standard_LRS' }
}

B. var locations = ['eastus', 'westus']
resource storageAccounts 'Microsoft.Storage/storageAccounts@2021-04-01' = [for loc in locations: {
name: 'storage${loc}'
location: loc
kind: 'StorageV2'
sku: { name: 'Standard_LRS' }
}]

C. var locations = ['eastus', 'westus']
resource storageAccounts 'Microsoft.Storage/storageAccounts@2021-04-01' = {
name: 'storage'
location: locations
kind: 'StorageV2'
sku: { name: 'Standard_LRS' }
}

D. param locations array = ['eastus', 'westus']
resource storageAccounts 'Microsoft.Storage/storageAccounts@2021-04-01' = for loc in locations {
name: 'storage'
location: loc
kind: 'StorageV2'
sku: { name: 'Standard_LRS' }
}

Solution

1. Step 1: Understand Bicep loop syntax

   Bicep uses array loops with the syntax [for item in array: { ... }] to create multiple resources.

2. Step 2: Analyze each option

   var locations = ['eastus', 'westus'] resource storageAccounts 'Microsoft.Storage/storageAccounts@2021-04-01' = [for loc in locations: { name: 'storage${loc}' location: loc kind: 'StorageV2' sku: { name: 'Standard_LRS' } }] correctly uses a variable array and a loop to create multiple storage accounts with unique names and locations. Options B and C misuse the location property by assigning an array directly. param locations array = ['eastus', 'westus'] resource storageAccounts 'Microsoft.Storage/storageAccounts@2021-04-01' = for loc in locations { name: 'storage' location: loc kind: 'StorageV2' sku: { name: 'Standard_LRS' } } has incorrect loop syntax missing square brackets.

3. Final Answer:

   var locations = ['eastus', 'westus'] resource storageAccounts 'Microsoft.Storage/storageAccounts@2021-04-01' = [for loc in locations: { name: 'storage${loc}' location: loc kind: 'StorageV2' sku: { name: 'Standard_LRS' } }] -> Option B

4. Quick Check:

   Bicep loops use [for item in array: {...}] [OK]

Hint: Use [for item in array: {...}] for resource loops [OK]

Common Mistakes:

• Assigning array directly to location property
• Incorrect loop syntax without brackets
• Using string instead of array for multiple locations