PowerShell Interview Questions and Answers

Ques 1. Explain the concept of 'Pipelines' in PowerShell.

Pipelines allow the output of one command to be used as the input for another command.

Example:

Get-Process | Stop-Process -Force

Ques 2. How do you iterate through an array in PowerShell?

With foeach loop.

Ques 3. What is the purpose of the 'Try-Catch' statement in PowerShell?

Try-Catch is used for error handling, allowing you to catch and handle exceptions.

Ques 4. Explain how to create a PowerShell module.

A module is created by organizing functions, variables, and cmdlets into a .psm1 file.

Example:

Save-Module with PATH

Ques 5. What is the purpose of the 'Where-Object' cmdlet?

Where-Object is used to filter objects based on a specified condition.

Ques 6. How do you execute an external command or program in PowerShell?

Use the 'Invoke-Expression' cmdlet or call the program directly.

Example:

Invoke-Expression 'ping google.com'

Ques 7. Explain the 'ForEach-Object' cmdlet in PowerShell.

ForEach-Object is used to process each item in a collection or pipeline.

Ques 8. Explain the 'Select-Object' cmdlet in PowerShell.

Select-Object is used to select specific properties of objects.

Ques 9. How do you create and use a hashtable in PowerShell?

With key-value pair.

Ques 10. Explain the concept of 'Execution Policies' in PowerShell.

Execution Policies determine the conditions under which PowerShell scripts can run.

Example:

Get-ExecutionPolicy

Ques 11. How do you work with JSON data in PowerShell?

Use 'ConvertTo-Json' and 'ConvertFrom-Json' cmdlets to convert objects to JSON and vice versa.

Ques 12. Explain the purpose of the 'Split' method in PowerShell.

'Split' is used to divide a string into substrings based on a specified delimiter.

Ques 13. Explain the 'Join-Path' cmdlet in PowerShell.

Join-Path combines a path and child path into a single path.