Operating System (OS)
Which is a permanent database in the general model of the compiler?

Terminal Table
Source code
Literal Table
Identifier Table
None of these

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

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

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Operating System (OS)
Addressing structure

defines the fundamental method of determining effective operand addresses
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
All of these
None of these

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