Operating System (OS)
Which of the following is characteristic of an operating system?

None of these
All listed here
resource management
memory management
error recovery

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Operating System (OS)
The term 'polling' in a computer means a process by which a computer system

decides correct alternative by analysing several ones
None of these
multiplexes the inputs and updates the memory accordingly
inquires to see if a terminal has any transaction to send
detects/corrects errors

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Operating System (OS)
Thrashing can be avoided if

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

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