Operating System (OS)
The Memory Address Register

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 group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
is a hardware memory device which denotes the location of the current instruction being executed.

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Operating System (OS)
What is the method of handling deadlocks?

Allow the system to enter the deadlock state and then recover
Use a protocol to ensure that the system will never enter a deadlock state
All of these
Pretend that deadlocks never occur in the system

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