Operating System (OS)
What is the function of an operating system ?

Manages compute's resources very efficiently
Takes care of scheduling jobs for execution
All of the listed here
Manages the flow of data and instructions

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Operating System (OS)
System maintenance:

is usually not necessary
always requires several programs
None of these
is not required if the system is well written
is necessary on all systems, regardless of how good

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Operating System (OS)
Addressing structure

defines the fundamental method of determining effective operand addresses
All of these
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
None of these

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