One task which is done by a computer to another computer is remote control feature.
In a nutshell, this feature allows a user to control another computer using his terminal; this can be done by enabling remote control a computer in the control panel. This works for Windows XP, Windows Vista, Windows 7, Windows 8, and Windows 10.
Controlling the bandwidth of another computer is another example. This is an important feature especially in the workplace because employees tend to abuse internet connection if left unchecked. This feature requires a basic knowledge of networking.