Operating System (OS)
The register or main memory location which contains the effective address of the operand is known as

scratch pad
pointer
special location
indexed register
None of these

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Operating System (OS)
Multiprogramming systems:

are used only on large mainframe computers
None of these
are easier to develop than single programming system
execute each job faster
execute more jobs in the same time period

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Operating System (OS)
You should choose sleep option when

The computer is tired after working for the whole day
You are leaving for a very short time and want to resume you work shortly
You finish working and going to bed
When computer gets hanged frequently. Let it sleep for some time

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