Which of the following is not an operating system service?
A) program execution
B) I/O operation
C) protection and security
D) graphical user interface

Question

Quizplus · Accepted Answer

A graphical user interface (GUI) is not necessarily an essential operating system service, as some operating systems can function without it. However, program execution, I/O operations, and protection and security are essential services provided by an operating system.

Which of the Following Is Not an Operating System Service