Operating System (OS)
Trojan-Horse programs

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

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Operating System (OS)
What is the method of handling deadlocks?

Allow the system to enter the deadlock state and then recover
Use a protocol to ensure that the system will never enter a deadlock state
Pretend that deadlocks never occur in the system
All of these

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