Operating System (OS)
The advantage of a command processor running only built-in commands is:

users can create system programs and run them as commands
the command set being common across different hardware configurations
the processing is much faster than would other-wise be the case when user defined commands are used
flexibility to the users in running lists of commands by simply collecting them in named batch command files
None of these

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Operating System (OS)
The term "operating system" means

the way a computer operator works
None of these
the way a floppy disk drive operates
conversion of high level language into machine code
a set of programs which controls computer working

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Operating System (OS)
Multiprogramming

None of these
consists of those addresses that may be generated by a processor during execution of a computation.
is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
is a method of allocating processor time.
allows multiple programs to reside in separate areas of core at the time.

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