JSON operations (ConvertFrom-Json, ConvertTo-Json) in PowerShell - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the PowerShell cmdlet <code>ConvertFrom-Json</code> do?

It takes a JSON string and turns it into PowerShell objects you can work with easily.

beginner

What is the purpose of ConvertTo-Json in PowerShell?

It converts PowerShell objects into a JSON string format, which can be saved or sent to other programs.

beginner

How would you convert a JSON string stored in a variable $jsonString to a PowerShell object?

Use $obj = $jsonString | ConvertFrom-Json to get a PowerShell object from the JSON string.

beginner

How can you convert a PowerShell object $obj back to a JSON string?

Use $jsonString = $obj | ConvertTo-Json to get a JSON string from the object.

beginner

Why is JSON useful in scripting and automation?

JSON is a simple text format to share data between programs and scripts, making automation easier and more flexible.

Which cmdlet converts a JSON string into a PowerShell object?

A ConvertTo-Json

B ConvertFrom-Xml

C ConvertTo-Xml

D ConvertFrom-Json

ConvertFrom-Json takes JSON text and creates PowerShell objects.

What does ConvertTo-Json output?

A JSON string

B XML string

C PowerShell objects

D CSV string

ConvertTo-Json turns objects into JSON text format.

If you want to send data from PowerShell to a web API, which cmdlet helps prepare the data?

A ConvertFrom-Json

B ConvertTo-Json

C Invoke-WebRequest

D Get-Content

You use ConvertTo-Json to make your data a JSON string before sending it.

What type of data does ConvertFrom-Json produce?

A Plain text

B HTML code

C PowerShell objects

D Binary data

ConvertFrom-Json creates PowerShell objects from JSON text.

Which of these is a correct way to convert JSON text stored in $json to an object?

A $json | ConvertFrom-Json

B $json | ConvertTo-Json

C ConvertTo-Json $json

D ConvertFrom-Json -InputObject $json

The pipe | sends the JSON string to ConvertFrom-Json to get an object.

Explain how you would convert a JSON string to a PowerShell object and then back to JSON.

Think about the flow: JSON string → object → JSON string

Why is JSON a popular format for scripting and automation tasks?

Consider why scripts often use JSON to talk to other programs or APIs