Operating System (OS)
Which of the following is not a characteristic of a daisy chaining priority control scheme?

None of these
the number of control lines is independent of the number of devices on the chain
priority is programmable
the failure of one device may affect other devices on the chain
it is relatively easy to add more devices to the chain

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

None of these
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.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.

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