Operating System (OS)
Trojan-Horse programs

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

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Operating System (OS)
Memory

None of these
is typically characterized by interactive processing and time-slicing of the CPU
is a sequence of instructions
is a device that performs a sequence of operations specified by instructions in memory.
is the device where information is stored

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