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

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

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Operating System (OS)
Which of the following is not true about documentation?

Documentation gives better understanding of the problem
Documentation, of a system, should be as clear and direct as possible
All of these
None of these
Documentation increases the maintenance time and cost

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