Which of the following below is NOT an example of an operating system?

• A. Microsoft Office 2016
• B. Linux
• C. Microsoft Windows 10
• D. Android

Answer: (A)

The main idea is recognizing what counts as an operating system versus application software. An operating system is system software that sits between hardware and programs, managing resources like memory, processors, devices, and file systems, while providing services that other software rely on. Microsoft Office 2016 is an office suite of applications (Word, Excel, PowerPoint) designed for productivity. It doesn’t manage hardware or provide those core services; it runs on top of an operating system. That’s why it isn’t an operating system. The other items—Linux, Microsoft Windows 10, and Android—are operating systems, each serving as the platform on which applications like Office run. Office requires an OS to operate, but an OS can run many applications beyond Office.