Operating System (OS)
Trojan-Horse programs

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

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Operating System (OS)
Thrashing can be avoided if

the speed of I/O processor is increased
None of these
the pages, belonging to the working set of the programs, are in main memory
the speed of CPU is increased
All of these

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