Operating System (OS)
Block caches or buffer caches are used

to improve disk performance
None of these
to speed up main memory read operation
to handle interrupts
to increase the capacity of the main memory

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Operating System (OS)
Thrashing

None of these
can be caused by poor paging algorithms
is a natural consequence of virtual memory systems
always occurs on large computers
can always be avoided by swapping

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Operating System (OS)
Assembler language

is usually the primary user interface
is a mnemonic form of machine language
is quite different from the SCL interpreter
None of these
requires fixed-format commands

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