Operating System (OS)
Whenever you move a directory from one location to another

All files inside the directory are moved
Both A and B
The directory is moved the source file is not moved
All the subdirectory inside that directory are moved

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Operating System (OS)
The instruction register

None of these
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
contains the address of the memory location that is to be read from or stored into.
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".
is a hardware memory device which denotes the location of the current instruction being executed.

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Operating System (OS)
A page fault

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

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