Operating System (OS)
Which of the following systems software does the job of merging the records from two files into one?

Networking software
Documentation system
Security software
Utility program
None of these

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Operating System (OS)
The instruction register

is a hardware memory device which denotes the location of the current instruction being executed.
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".
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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