Which of these is not an operating system?
Correct Answer : b ) ScalaExplanation :
An operating system is a system software that allows the computer to work properly. It acts as an interface between hardware and the user. It manages both hardware and software of the computer.
Some of the popular operating systems are Apple macOS, Microsoft Windows, Android, LINUX, UNIX, Apple iOS, Blackberry, etc.
Hence, option (B) is correct.
This question was asked in RRB NTPC CBT 2 exam held on 18 January 2017 Shift 3.