Operating System (OS)
...... is used in operating system to separate mechanism from policy

Multi level implementation
Single level implementation
None
Two level implementation

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Operating System (OS)
Object code

is the output of compilers, but not assemblers
must be "loaded" before execution
must be rewritten before execution
is ready to execute
None of these

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

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

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