Operating System (OS)
Which of the following is not true about documentation?

Documentation increases the maintenance time and cost
Documentation, of a system, should be as clear and direct as possible
None of these
Documentation gives better understanding of the problem
All of these

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Operating System (OS)
The dispatcher

actually schedules the tasks into the processor
is always small and simple
never changes task priorities
puts tasks in I/O wait
None of these

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Operating System (OS)
Trojan-Horse programs

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

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