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Which of the following is NOT an operating system?
1. Microsoft Windows
2. Google Chrome
3. MS - DOS
4. Linux

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Correct Answer - Option 2 : Google Chrome

The correct answer is Google Chrome.

  • Google Chrome is a cross-platform web browser developed by Google.
    • It was first released in 2008 for Microsoft Windows and was later ported to Linux, macOS, iOS, and Android where it is the default browser built into the OS.
    • The browser is also the main component of Chrome OS, where it serves as the platform for web applications.
    • The browser was first publicly released on 2nd September 2008 for Windows XP and later, with 43 supported languages, officially a beta version, and as a stable public release on 11th December 2008.
    • Google Chrome 5.0, announced on 25th May 2010, was the first stable release to support all three platforms.

  • Microsoft Windows, commonly referred to as Windows, is a group of several proprietary graphical operating system families, all of which are developed and marketed by Microsoft.
    • Each family caters to a certain sector of the computing industry. Active Microsoft Windows families include Windows NT and Windows IoT; these may encompass subfamilies, (e.g. Windows Server or Windows Embedded Compact) (Windows CE).
    • Defunct Microsoft Windows families include Windows 9x, Windows Mobile, and Windows Phone.
    • Microsoft introduced an operating environment named Windows on 20th November 1985, as a graphical operating system shell for MS-DOS in response to the growing interest in graphical user interfaces (GUIs).
  • MS-DOS (Microsoft Disk Operating System) is an operating system for x86-based personal computers mostly developed by Microsoft.
    • MS-DOS was the main operating system for IBM PC-compatible personal computers during the 1980s, from which point it was gradually superseded by operating systems offering a graphical user interface (GUI), in various generations of the graphical Microsoft Windows operating system.
  • Linux is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on 17th September 1991, by Linus Torvalds.
    • Linux is typically packaged in a Linux distribution.

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