A deployment script needs to apply a Dell BIOS setting using `cctk.exe`, but only if the current value is not already set correctly. The script should first read the current value of the `--wakeonlan` setting and then apply `--wakeonlan=enable` only if the current value is not 'Enabled'.
# --- PowerShell Snippet ---
$cctkPath = "C:\...\cctk.exe"
$DesiredWOLState = "Enabled" # Note: cctk output is case-sensitive
# Read current state
$CurrentWOLOutput = & $cctkPath --wakeonlan
# Extract value (e.g., output might be "WakeOnLan=Enabled" or "WakeOnLan=Disabled")
$CurrentWOLState = ($CurrentWOLOutput -split '=')[1].Trim()
Write-Host "Current WOL State: $CurrentWOLState"
# Check and apply if needed
if ($CurrentWOLState -ne $DesiredWOLState) {
Write-Host
"Setting WOL State to $DesiredWOLState..."
& $cctkPath
"--wakeonlan=$DesiredWOLState"
# Add error checking
for the set command here...
} else {
Write-Host "WOL
State is already set correctly."
}
# --- End Snippet ---
What is a key benefit of checking the current setting before applying a new value in deployment scripts? (Select all that apply.)
A. Reduces unnecessary BIOS writes, potentially speeding up the script and reducing NVRAM wear.
B. Prevents errors if the setting is read-only or locked by a password.
C. Ensures the script always reports success even if the setting cannot be changed.
D. Allows the script to toggle the setting between enabled and disabled on each run.
E. Provides idempotency, ensuring the desired state is achieved without causing unnecessary changes or side effects if run multiple times.
F. Simplifies logging by only recording actual changes made.