Which of these is NOT an operating system?

This question was previously asked in
NTPC CBT 2 2016 Previous Paper 6 (Held On: 18 Jan 2017 Shift 3)
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  1. Android
  2. Scala
  3. UNIX
  4. Windows

Answer (Detailed Solution Below)

Option 2 : Scala
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Detailed Solution

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The correct answer is Scala.

  • Scala is a type-safe JVM programming language that incorporates both object-oriented and functional programming.
  • It is used for general software applications.
  • It was firstly introduced in 2003.

Important Points

  • An operating system or "OS" is software that communicates with the hardware and allows other programs to run.
  • It is comprised of the system software, or the fundamental files your computer needs to boot up and function.
  • Common desktop operating systems include Windows, Unix, DOS, Linux and Android is a mobile operating system.
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