Operating System (OS)
Trojan-Horse programs

are hidden programs that do not show up on the system
usually are immediately discovered
do not usually work
None of these
are legitimate programs that allow unauthorized access

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

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
the command set being common across different hardware configurations
users can create system programs and run them as commands
None of these

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Operating System (OS)
Paging

None of these
consists of those addresses that may be generated by a processor during execution of a computation.
is a method of allocating processor time.
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.
allows multiple programs to reside in separate areas of core at the time.

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