Operating System (OS)
Addressing modes

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

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Operating System (OS)
Backups should be done

as several image copies, followed by an incremental
None of these
daily for most installations
weekly for most installations
as several incrementals, followed by an image copy

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