Operating System (OS)
Which of the following is not essential to shut down your computer?

Cut off the power supply
Switch off monitor
Save all opened files
Close all running applications

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Operating System (OS)
The dispatcher

is always small and simple
None of these
puts tasks in I/O wait
actually schedules the tasks into the processor
never changes task priorities

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Operating System (OS)
A page fault

is a reference to a page belonging to another program
is an access to a page not currently in memory
None of these
is an error is a specific page
occurs when a program accesses a page of memory

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Operating System (OS)
Assembler language

is quite different from the SCL interpreter
is usually the primary user interface
is a mnemonic form of machine language
None of these
requires fixed-format commands

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