Atechnician has been told that a keyboard is not responding at all. what can the technician do quickly to determine whether that is true?

Press Caps Lock key to see the light illuminates or not

Explanation:

Computer keyboard is the typewriter-style device that uses arrangement of the buttons or the keys to act as the mechanical levers or the electronic switches.

Keyboard keys  have characters which are engraved or printed on the surface and press of each key corresponds to the single written symbol.

If the keyboard is not working and to see whether it is working or not, there is a Caps Lock key on the keyboard. Generally, all keyboards have a Caps Lock light which will light up if the button is on. So, this can be a quick check.