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Which of the following is not a part of all the versions of UNIX?

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in Unix by (67.2k points)
Which of the following is not a part of all the versions of UNIX?

(a) Kernel and Shell

(b) Commands and utilities

(c) Graphical user interface

(d) System Calls

I got this question by my college professor while I was bunking the class.

I'd like to ask this question from Introduction to UNIX topic in division The Unix Architecture & General Purpose Utilities of Unix

1 Answer

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Best answer
Correct choice is (c) Graphical user interface

The best explanation: The kernel is the heart of the operating system while the shell is the utility which processes our requests. While system calls are a handful of functions which are used to interact with the kernel and make available the services provided by the operating system. A Graphical user interface (GUI) is available in UNIX, but the traditional UNIX interface is the command line only.

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