Operating System (OS)
In which of the storage placement strategies a program is placed in the largest available hole in the main memory?

worst fit
best fit
first fit
None of these
buddy

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Operating System (OS)
Addressing modes

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

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

None 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
All of these
to provide for long and short term storage of files with appropriate economic tradeoffs.

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