COMPUTER FUNDAMENTALS

Detailed explanation-1: -Answer: DOS is not a mobile operating system. Explanation: Among android, Symbian, DOS, and iOS, DOS is not an operating system.

Detailed explanation-2: -Linux for mobile devices, sometimes referred to as mobile Linux, is the usage of Linux-based operating systems on portable devices, whose primary or only Human interface device (HID) is a touchscreen.

Detailed explanation-3: -Linux is a Unix-like, open source and community-developed operating system (OS) for computers, servers, mainframes, mobile devices and embedded devices. It is supported on almost every major computer platform, including x86, ARM and SPARC, making it one of the most widely supported operating systems.