Operating System (OS)
Addressing structure

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.
All of these
defines the fundamental method of determining effective operand addresses
None of these

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Operating System (OS)
Multiprogramming

is a method of allocating processor time.
consists of those addresses that may be generated by a processor during execution of a computation.
allows multiple programs to reside in separate areas of core at the time.
None of these
is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.

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Operating System (OS)
The function(s) of file system is (are):

All of these
to provide security against loss of information due to system failure
to provide complete file naming freedom to the users and to permit controlled sharing of files
None of these
to provide for long and short term storage of files with appropriate economic tradeoffs.

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