[Solved] You have this function:function Test-Param { param( [Parameter(Mandatory=$true)] [ValidateSet('Yes','No')] $Answer ) Write-Output $Answer }When calling Test-Param without arguments, what error occurs? | PowerShell

PowerShell - Functions

You have this function:

function Test-Param {
  param(
    [Parameter(Mandatory=$true)]
    [ValidateSet('Yes','No')]
    $Answer
  )
  Write-Output $Answer
}

When calling Test-Param without arguments, what error occurs?

ANo error, $Answer defaults to null

BError: Missing mandatory parameter 'Answer'

CError: Invalid parameter value

DFunction runs but outputs empty string

Step-by-Step Solution

Solution:

Step 1: Check Mandatory attribute effect
Mandatory=$true requires the parameter to be provided; omitting it causes an error.
Step 2: ValidateSet does not affect missing parameter error
The error is about missing parameter, not invalid value.
Final Answer:
Error: Missing mandatory parameter 'Answer' -> Option B
Quick Check:
Mandatory missing = error [OK]

Quick Trick: Mandatory parameters must be supplied or error occurs [OK]

Common Mistakes:

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