OPERATING SYSTEMS FOR COMPUTERS
COMPUTER OPERATING SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Refers to the outermost layer of a program
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It is another term for user interface
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If the application is usually command driven, the it might be a menu-driven system that translates the user’s selections into the appropriate commands
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Refers to programs and operating systems that accept commands in the form of special words or letters
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Detailed explanation-1: -Net shell is not a shell in UNIX system.
Detailed explanation-2: -Shell scripts are compiled—-This is a wrong statement. That means Shell is a programming language. Shell scripts are not compiled, rather, they are interpreted and executed by the shell itself. Shell scripts can also call compiled programs.
Detailed explanation-3: -Which of the following is/are true about Shell? Explanation: Shell is the agency that sits between the user and the UNIX system. It is a unique and multi-faceted program. It is also called command-interpreter because it interprets our command entered.
Detailed explanation-4: -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.