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 CallsI 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

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

1.	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 CallsI 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
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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