Operating System (OS)
Trojan-Horse programs

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

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Operating System (OS)
A program

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

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