Operating System (OS)
A Processor

is a device that performs a sequence of operations specified by instructions in memory.
is the device where information is stored
None of these
is typically characterized by interactive processing and time of the CPU
is a sequence of instructions

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Operating System (OS)
The dispatcher

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

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Operating System (OS)
All of the following are task performed by the operating system except

Performing housekeeping task like file compression and disk defragmentation
Managing hardware on the computer
Provides an interface for user to interact with computer
Controlling the access that application program has to the CPU

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