Operating System (OS)
Trojan-Horse programs

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

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Operating System (OS)
Which of the following is not a characteristic of a daisy chaining priority control scheme?

None of these
priority is programmable
the number of control lines is independent of the number of devices on the chain
the failure of one device may affect other devices on the chain
it is relatively easy to add more devices to the chain

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Operating System (OS)
Process is

a program in execution
None of these
a job in secondary memory
program in High level language kept on disk
contents of main memory

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