Which PowerShell cmdlet is used specifically for shutting down local or remote computers?

The cmdlet used specifically for shutting down local or remote computers is Stop-Computer. This PowerShell command allows administrators to initiate a shutdown process for specified machines, leveraging the functionality to target both local and remote systems.

When using Stop-Computer, you can include parameters that facilitate the shutdown of remote machines by specifying the -ComputerName parameter. This versatility is crucial in cloud environments where management of multiple systems typically occurs remotely. Furthermore, the cmdlet safely handles the shutdown process, allowing an orderly closing of applications and services running on the targeted machine.

The other options do not conform to the correct syntax or naming conventions of PowerShell cmdlets as established by Microsoft. Proper PowerShell cmdlet names follow a verb-noun format separated by a hyphen, hence the importance of selecting the correct one for the intended function.