Functions capstone: defend your automation

0 of 6 answered · Pass mark: 5 of 6 · One attempt per question · Progress is saved in this browser.

1. Question 1 of 6 — Predict the output

   function Get-Double { param([int]$n) $n * 2 } Get-Double -n 21

   What reaches the caller?

   42 Nothing — the result was never assigned An error: the function has no return statement 212

2. Question 2 of 6 — Spot the bug

   This function returns two objects instead of one. Click the guilty line — one attempt.

    1function Get-DiskFreePercent {
    2    param( [string]$Drive = 'C' )
    3    $v = Get-Volume -DriveLetter $Drive
    4    $v.SizeRemaining
    5    [pscustomobject]@{ Drive = $Drive; FreePercent = [math]::Round($v.SizeRemaining / $v.Size * 100, 1) }
    6}

3. Question 3 of 6 — Judge the claims

   Which statements are true of a function that takes pipeline input? Select all that apply, then check.

   A process block runs once per input object Values left uncaptured inside process become output Write-Host output can be captured by the caller Only compiled C# cmdlets accept pipeline input

   Check selection

4. Question 4 of 6 — Choose the fix

   Get-DiskFreePercent returns two objects instead of one. Which change fixes it?

   Pick the fix you would defend in review.

   Delete line 4 — or capture it ($bytesLeft = $v.SizeRemaining) Add return before the [pscustomobject] Remove the default value from the param block Pipe the hashtable to Out-Null

5. Question 5 of 6 — Predict the default

   function New-Greeting { param( [string]$Name = 'World' ) "Hello, $Name" } New-Greeting -Name 'Genie'

   What does this call output?

   Hello, Genie Hello, World Hello, $Name An error: -Name is not a declared parameter

6. Question 6 of 6 — Verify it

   Which Pester assertion proves Get-DiskFreePercent returns exactly one report object?

   Pick the assertion.

   $result | Should -HaveCount 1 $result | Should -Be 1 $result.Drive | Should -Not -BeNullOrEmpty Should -HaveCount 1 $result