Operating System (OS)
Thrashing can be avoided if

the speed of I/O processor is increased
the speed of CPU is increased
None of these
the pages, belonging to the working set of the programs, are in main memory
All of these

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Operating System (OS)
System generation:

requires extensive tools to be understandable
is always quite simple
is always very difficult
varies in difficulty between systems
None of these

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Operating System (OS)
The Memory Address Register

is a hardware memory device which denotes the location of the current instruction being executed.
None of these
contains the address of the memory location that is to be read from or stored into.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".

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