In Windows Server 2016, what must be running to allow you to manage a server remotely with PowerShell?

WinRM

Explanation:

WinRM is Microsoft's implementation of WS-Management in Windows which allows systems to access or exchange management information across a common network.

1. Starts the WinRM service

2. Sets the WinRM service to automatically start during the next boot of computer system

3. Enables all session configurations

4. Changes the security descriptor of all session configurations to allows remote access

5. Enables a firewall exception for WS-management