Operating System (OS)
Object code

None of these
must be rewritten before execution
is the output of compilers, but not assemblers
must be "loaded" before execution
is ready to execute

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Operating System (OS)
Trojan-Horse programs

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

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Operating System (OS)
Scheduling is

None of these
allowing jobs to use the processor
not required in uniprocessor systems
unrelated to performance consideration
the same regard-less of the purpose of the system

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