Toolmaking-Self assessment.ps1

function Get-CorpSysInfo {
    [cmdletbinding()]
    param (
        [Parameter(ValueFromPipeline,
                   ValueFromPipelineByPropertyName)]
        [ValidateNotNullOrEmpty()]
        [String[]] $ComputerName = $env:COMPUTERNAME,

        [ValidateSet('dcom','Wsman')]
        [String] $Protocol = 'Wsman'
    )
    process {
        foreach ($Computer in $ComputerName) {
            try {
                $Session = $null
                Write-Verbose -Message "Attempting connection to $Computer over $Protocol"
                $option = New-CimSessionOption -Protocol $Protocol
                $Session = New-CimSession -ComputerName $Computer -SessionOption $option
                if ($Session -eq $null) {
                    Write-Warning -Message "Failed establishing $Protocol session to $Computer"
                    continue
                }
                $OS = Get-CimInstance -CimSession $Session -ClassName Win32_OperatingSystem
                $Bios = Get-CimInstance -CimSession $Session -ClassName win32_bios
                
                $output = [ordered]@{
                    BIOSSerial = $Bios.SerialNumber
                    ComputerName = $C
                    SPVersion = $os.ServicePackMajorVersion
                    OSVersion = $os.Version
                }
                $obj = New-Object -TypeName pscustomobject -Property $output
                Write-Output -InputObject $obj
            }
            finally {
                if ($Session) {
                    $Session | Remove-CimSession
                }
            }
        }
    }  
}