MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The shell is the outermost layer of the operating system. Shells incorporate a programming language to control processes and files, as well as to start and control other programs.

Detailed explanation-2: -The shell is the outer layer that manages the interaction between the user and the OS. The shell communicates with the operating system by either taking the input from the user or a shell script. A shell script is a sequence of system commands that are stored in a file.

Detailed explanation-3: -In computing, a shell is a computer program that exposes an operating system’s services to a human user or other programs. In general, operating system shells use either a command-line interface (CLI) or graphical user interface (GUI), depending on a computer’s role and particular operation.

Detailed explanation-4: -A kernel is the very core of a typical OS. A shell is a CLI (command-line interpreter). A kernel is a type of low-level program that has its interfacing with the hardware on top of which all the applications run (disks, RAM, CPU, etc.). A shell allows all of its users to establish communication with the kernel.

Detailed explanation-5: -Shell is an environment in which we can run our commands, programs, and shell scripts. There are different flavors of a shell, just as there are different flavors of operating systems. Each flavor of shell has its own set of recognized commands and functions.