Operating System (OS)
When you start up the computer the boot up storage at which the BIOS versions manufacturer and data are displayed on the monitor is called

Kernel loading
Power on self test (POST)
Bootstrap
System configuration

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Operating System (OS)
The Memory Buffer Register (MBR)

None of these
is a hardware memory device which denotes the location of the current instruction being executed.
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".
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.

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