MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Input Unit These components help users enter data and commands into a computer system. Data can be in the form of numbers, words, actions, commands, etc. The main function of input devices is to direct commands and data into computers.

Detailed explanation-2: -In Windows operating systems, the Command Prompt is a program that emulates the input field in a text-based user interface screen with the Windows Graphical User Interface (GUI). It can be used to execute entered commands and perform advanced administrative functions.

Detailed explanation-3: -In Unix-like operating systems, true and false are commands whose only function is to always return with a predetermined exit status. Programmers and scripts often use the exit status of a command to assess success (exit status zero) or failure (non-zero) of the command.

Detailed explanation-4: -Edit is an external command available for the following Microsoft operating systems. The edit command is a legacy 16-bit program, which is incompatible with 64-bit operating systems. Therefore, 64-bit versions of Windows do not come installed with, and cannot run, the edit command.