Operating System (OS) is the answer.
An application runs in/on an OS. It is not the OS itself. Like Word or Chrome are applications.
Systems is too generic and not specific enough to mean anything in this context. Throw away answer.
Network Operating System does not 'usually' run on a hard drive but on memory chips in things like routers, wireless access points and switches that move network traffic.
Alt and tab to switch to open applications
Answer:
an organization wants to use its computer to make video calls with suppliers overseasename two input and two output device that the organisation must have for this to happen and briefly explain the popruse of each device
Read view
It allows to hide all instrument panels
