Operating System (OS)
Scheduling is

None of these
allowing jobs to use the processor
not required in uniprocessor systems
the same regard-less of the purpose of the system
unrelated to performance consideration

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Operating System (OS)
Backups should be done

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

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Operating System (OS)
The Storage-to-Storage instructions

which perform indicated operations on two fast registers of the machine and have the result in one of the registers
have both their operands in the main store.
None of these
which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also
All of these

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