Operating System (OS)
The Register - to - Register (RR) instructions

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, except in the case of store operation when it is also
None of these
All of these
which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.
have both their operands in the main store.

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Operating System (OS)
A page fault

None of these
is an access to a page not currently in memory
occurs when a program accesses a page of memory
is an error is a specific page
is a reference to a page belonging to another program

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