ErrorAction parameter in PowerShell - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output when using ErrorAction SilentlyContinue?

Consider the following PowerShell command that tries to get a non-existent service with ErrorAction set to SilentlyContinue. What will be the output?

PowerShell

Get-Service -Name 'NoSuchService' -ErrorAction SilentlyContinue
Write-Output 'Command completed'

A No output from Get-Service, then 'Command completed' printed

B Error message about service not found, then 'Command completed' printed

C Script stops with an error and does not print 'Command completed'

D Empty output and no 'Command completed' printed

💡 Hint

ErrorAction SilentlyContinue suppresses error messages but lets the script continue.

Using ErrorAction SilentlyContinue hides the error message from Get-Service when the service does not exist, so no error is shown. The script continues and prints 'Command completed'.

💻 Command Output

intermediate

What happens with ErrorAction Stop on a failing command?

What is the result of running this PowerShell command that tries to get a non-existent service with ErrorAction set to Stop? Get-Service -Name 'NoSuchService' -ErrorAction Stop Write-Output 'This line runs'

PowerShell

Get-Service -Name 'NoSuchService' -ErrorAction Stop
Write-Output 'This line runs'

A Error message printed but script continues to print 'This line runs'

B Error is ignored and 'This line runs' is printed

C Error is thrown and script stops before printing 'This line runs'

D No error, empty output, and 'This line runs' printed

💡 Hint

ErrorAction Stop causes the script to stop on errors.

With ErrorAction Stop, the command throws a terminating error when the service is missing. The script stops immediately and does not run the next line.

📝 Syntax

advanced

Which command correctly uses ErrorAction to ignore errors?

Select the PowerShell command that correctly uses the ErrorAction parameter to ignore errors when deleting a file that may not exist.

A Remove-Item 'C:\temp\file.txt' -ErrorAction Ignore

B Remove-Item 'C:\temp\file.txt' -ErrorAction SilentlyContinue

C Remove-Item 'C:\temp\file.txt' -ErrorAction Continue

D Remove-Item 'C:\temp\file.txt' -ErrorAction Stop

💡 Hint

ErrorAction SilentlyContinue suppresses error messages and continues.

ErrorAction SilentlyContinue hides error messages and lets the script continue. 'Ignore' is not a valid value for ErrorAction, so option B causes an error.

🚀 Application

advanced

How to catch errors when using ErrorAction Stop?

You want to run a command that stops on error and catch that error to handle it gracefully. Which script snippet correctly does this?

A try { Get-Item 'C:\no_file.txt' } catch { Write-Output 'File not found' }

B Get-Item 'C:\no_file.txt' -ErrorAction Stop; if ($?) { Write-Output 'File found' } else { Write-Output 'File not found' }

C Get-Item 'C:\no_file.txt' -ErrorAction SilentlyContinue; Write-Output 'Checked file'

D try { Get-Item 'C:\no_file.txt' -ErrorAction Stop } catch { Write-Output 'File not found' }

💡 Hint

Use try/catch with ErrorAction Stop to catch terminating errors.

Only option D uses try/catch with ErrorAction Stop to catch the terminating error and handle it. Option D does not catch the error and will stop the script. Option D does not stop on error. Option D lacks ErrorAction Stop, so errors may be non-terminating and not caught.

🧠 Conceptual

expert

What is the difference between ErrorAction SilentlyContinue and Ignore?

In PowerShell, what is the difference between using ErrorAction SilentlyContinue and ErrorAction Ignore?

A Ignore is not a valid ErrorAction value and causes an error; SilentlyContinue suppresses errors

B SilentlyContinue and Ignore are synonyms and behave the same

C SilentlyContinue suppresses error messages but runs error handlers; Ignore suppresses errors completely and skips error handlers

D Ignore logs errors to a file; SilentlyContinue shows errors on screen

💡 Hint

Check PowerShell documentation for valid ErrorAction values.

Ignore is not a valid value for the ErrorAction parameter and will cause a parameter binding error. SilentlyContinue is valid and suppresses error messages while continuing execution.