Which of the following is not a common operating system? A) Apple B) Linux C) Unix D) Windows Vista​

A) Apple

Explanation:

An operating system is a system software pre-installed on a computing device to manage or control software application, computer hardware and user processes.

This ultimately implies that, an operating system acts as an interface or intermediary between the computer end user and the hardware portion of the computer system (computer hardware) in the processing and execution of instructions.

Some examples of an operating system on computers are QNX, Linux, OpenVMS, MacOS, Microsoft windows, IBM, Solaris, VM etc.

Apple is not a common operating system.

However, MacOS is an operating system that is designed and developed by an American multinational technology company called Apple Inc.

answer unified communications;